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11 AK-33

Service Manual

1. INTRODUCTION ________________________________________________4 2. SMALL SIGNAL PART WITH TDA8885 _____________________________4
2.1. 2.2. 2.3. 2.4. 2.5. 2.6. 2.7. 2.8. 2.9. Vision IF amplifier _________________________________________________ 4 Video Switches _____________________________________________________ 5 Sound Circuit______________________________________________________ 5 Synchronisation circuit ______________________________________________ 5 Chroma and Luminance processing ___________________________________ 6 Colour Decoder ____________________________________________________ 6 PICTURE IMPROVEMENT FEATURES______________________________ 7 RGB output circuit and black-current stabilisation_______________________ 7 EAST ­ WEST OUTPUT STAGE_____________________________________ 8

3. TUNER _________________________________________________________8 4. VIDEO SWITCH TEA6415C _______________________________________9 5. MULTI STANDARD SOUND PROCESSOR___________________________9 6. SOUND OUTPUT STAGE WITH TDA 7265___________________________9 7. VERTICAL OUTPUT STAGE WITH STV 9379 _______________________10 8. VIDEO OUTPUT AMPLIFIER TDA6108 ____________________________10 9. COMBFILTER TDA 9181_________________________________________10 10. 11. 12. POWER SUPPLY (SMPS) _______________________________________10 POWER FACTOR CORRECTION ________________________________10 MICROCONTROLLER SDA555X ________________________________10
General Features ________________________________________________ 10 External Crystal and Programmable clock speed______________________ 10 Microcontroller Features _________________________________________ 10 Memory _______________________________________________________ 11 Display Features ________________________________________________ 11 ROM Characters ________________________________________________ 11 Acquisition Features _____________________________________________ 11 Ports __________________________________________________________ 11

12.1. 12.2. 12.3. 12.4. 12.5. 12.6. 12.7. 12.8.

13. 14. 15. 16.

SERIAL ACCESS CMOS 8K (1024*8) EEPROM ST24C08 ____________12 CLASS AB STEREO HEADPHONE DRIVER TDA1308 ______________12 SAW FILTERS ________________________________________________12 IC DESCRIPTIONS AND INTERNAL BLOCK DIAGRAM____________12
TDA8885: ______________________________________________________ 12
GENERAL DESCRIPTION _____________________________________________12 FEATURES__________________________________________________________12 Pin Description _______________________________________________________13 16.1.1. 16.1.2. 16.1.3.


16.2.1. 16.2.2. 16.2.3. 16.2.4.

UV1315, UV1316 ________________________________________________ 15
General description of UV1315: __________________________________________15 Features of UV1315: ___________________________________________________15 General description of UV1316: __________________________________________15 Features of UV1316: ___________________________________________________15

16.3.1. 16.3.2.

TEA6415C:_____________________________________________________ 16
General Description: ___________________________________________________16 Features: ____________________________________________________________16

16.4.1. 16.4.2.

TDA7265: ______________________________________________________ 17
Features: ____________________________________________________________17 Pinning: _____________________________________________________________17


TDA6108Q: ____________________________________________________ 17
Features: ____________________________________________________________17


74 HCT 32 _____________________________________________________ 18
PINNING ___________________________________________________________18

16.7.1. 16.7.2.

MC44608 ______________________________________________________ 18
General description:____________________________________________________18 General Features ______________________________________________________18


SDA5555: ______________________________________________________ 19
General description:____________________________________________________19

16.9.1. 16.9.2.

TDA9181: ______________________________________________________ 20
General Features:______________________________________________________20 Limits: ______________________________________________________________20


TCD1102: ______________________________________________________ 21
Description ________________________________________________________21 Applications _______________________________________________________21 General features: ____________________________________________________21 General description:__________________________________________________21 Features: __________________________________________________________21 Features: __________________________________________________________22 FEATURES________________________________________________________22 GENERAL DESCRIPTION ___________________________________________23 General Features:____________________________________________________23 Safety Features: _____________________________________________________23 LIMITS:___________________________________________________________23 PINNING _________________________________________________________23 DESCRIPTION_____________________________________________________24 PINNING _________________________________________________________24

16.10.1. 16.10.2. 16.10.3.


ST24C08: ______________________________________________________ 21

16.11.1. 16.11.2.

16.12. 16.13.

TDA1308: ______________________________________________________ 22 PCF8583: ______________________________________________________ 22

16.12.1. 16.13.1. 16.13.2.


MC33260: ______________________________________________________ 23

16.14.1. 16.14.2. 16.14.3. 16.14.4.


STV9379: ______________________________________________________ 24

16.15.1. 16.15.2.


MSP34XX :_____________________________________________________ 24

MSP3410D ________________________________________________________24
16.17. LM358N: ______________________________________________________ 26
General Description__________________________________________________26 Unique Characteristics________________________________________________26 Advantages ________________________________________________________26 Features ___________________________________________________________26 16.17.1. 16.17.2. 16.17.3. 16.17.4.





11AK33 is a 110ř chassis capable of driving 28-29",32",33" tubes at appropriate currents The chassis is a Frequency Controlled Tuning (PLL) and control system for multi-standard TV receivers with onscreen-display (OSD) for all relevant control functions. The system is based on the ` one-chip'I2C bus controlled video processing / deflection IC TDA8885 which also controls sound. German stereo and Nicam is detected and processed by the MSP 3410 G. Dolby sound is processed by MSP 3452 G, virtual dolby by MSP 3411G, BTSC Stereo by MSP 3430G IC' by option. All sound s processors also control the sound volume, balance, tone and spatial stereo effect. The user-interface is menu based control system with cursor keys. Only for some functions the colour keys are needed: This means that some of the functions can also be operated from the local keyboard (i.e. Vol -, Vol +, P -, P+ and M). Teletext is done by the microcontroller on-chip teletext module.
2. SMALL SIGNAL PART WITH TDA8885 The TDA8885 combine all small signal functions required for a colour TV receiver.

2.1. Vision IF amplifier The IF-amplifier contains 3 ac-coupled control stages with a total gain control range, which is higher then 66 dB. The sensitivity of the circuit is comparable. The video signal is demodulated by means of an alignment-free PLL carrier regenerator with an internal VCO. This VCO is calibrated by means of a digital control circuit, which uses the clock frequency of the m-Controller/Teletext decoder as a reference. The frequency setting for the various standards (33.4, 33.9, 38, 38.9, 45.75 and 58.75 MHz) is realised via the I 2 C-bus. To get a good performance for phase modulated carrier signals the control speed of the PLL can be increased by means of the FFI bit. The AFC output is generated by the digital control circuit of the IF-PLL demodulator and can be read via the I 2 C bus. For fast search tuning systems the window of the AFC can be increased with a factor 3. The setting is realised with the AFW bit. The AGC-detector operates on top sync and top white-level. The demodulation polarity is switched via the I 2 C-bus. The AGC detector capacitor is integrated. The time-constant can be chosen via the I 2 C-bus. The time-constant of the AGC system during positive modulation is rather long to avoid visible variations of the signal amplitude. To improve the speed of the AGC system a circuit has been included which detects whether the AGC detector is activated every frame period. When during 3 field periods no action is detected the speed of the system is increased. For signals without peak white information

the system switches automatically to a gated black level AGC. Because a black level clamp pulse is required for this way of operation the circuit will only switch to black level AGC in the internal mode. The circuit contains a video identification circuit, which is independent of the synchronisation circuit. Therefore search tuning is possible when the display section of the receiver is used as a monitor. However, this Ident circuit cannot be made as sensitive as the slower sync Ident circuit (SL) and we use both Ident outputs to obtain a reliable search system. The Ident output is supplied to the tuning system via the I 2 C-bus. The input of the identification circuit is connected to pin 24, the internal CVBS input. This has the advantage that the Ident circuit can also be made operative when a scrambled signal is received (descrambler connected between the IF video output (pin 16) and pin 24). A second advantage is that the Ident circuit can be used when the IF amplifier is not used The video Ident circuit can also be used to identify the selected CBVS or Y/C signal. The switching between the 2 modes can be realised with the VIM bit. The IC contains a group delay correction circuit, which can be switched between the BG and a flat group delay response characteristic. This has the advantage that in multi-standard receivers no compromise has to be made for the choice of the SAW filter. Also the sound trap is integrated within the IC .The centre frequency of the trap can be switched via the I 2 C-bus. For monoFM versions it is possible to obtain a demodulated IF video signal which has not passed the sound trap so that an external stereo decoder can be driven. This function is selected by means of the ICO bit (subaddress 28H). The signal is available on pin 27 (audio output pin when ICO = 0). The S/N ratio of the selected video signal can be read via the bits SN1/SN0 in sub-address 03H. 2.2. Video Switches The circuit has an input for the internal CVBS signal and 2 inputs for external CVBS or Y signals. The circuit has only 1 chroma input so that it is not possible to apply 2 separate Y/C inputs. The switch configuration is given in Fig. A. The selection of the various sources is made via the I 2 C-bus. The QFP-64 version has 2 independently switchable outputs. The CVBS1O output is identical to the selected signal that is supplied to the internal video processing circuit and can therefore be used as source signal for a teletext decoder. Both CVBS outputs have an amplitude of 2.0 VP-P . The CVBS2O output can for instance be used as drive signal for a PIP decoder. If the Y/C-3 signal is selected for one of the outputs the luminance and chrominance signals are added so that a CVBS signal is obtained again. 2.3. Sound Circuit The sound IF amplifier is similar to the vision IF amplifier and has a gain control range of about 66 dB. The AGC circuit is related to the SIF carrier levels (average level of AM or FM carriers) and ensures a constant signal amplitude of the AM demodulator and the QSS mixer. A multiplier realises the single reference QSS mixer. In this multiplier the SIF signal is converted to the intercarrier frequency by mixing it with the regenerated picture carrier from the VCO. The mixer output signal is supplied to the output via a high-pass filter for attenuation of the residual video signals. With this system a high performance hi-fi stereo sound processing can be achieved. To optimise the performance of the demodulator the offset can be compensated by means of an I 2 C-bus setting. The AM sound demodulator is realised by a multiplier. The modulated sound IF signal is multiplied in phase with the limited SIF signal. The demodulator output signal is supplied to the output via a low-pass filter for attenuation of the carrier harmonics. The AM signal is supplied to the output (pin 27) via the volume control. It is possible to get the AM output signal (not controlled on amplitude) on the QSS intercarrier output. The selection is made by means of the AM bit in sub-address 29H. Another possibility is that pin 11 can be used as external audio input pin and pin 49 can be used as (non-controlled) AM output pin. This can be realised by means of the setting the control bits CMB0 and CMB1 in sub-address 22H. 2.4. Synchronisation circuit The sync separator is preceded by a controlled amplifier, which adjusts the sync pulse amplitude to a fixed level. These pulses are fed to the slicing stage, which is operating at 50% of the amplitude. The separated sync pulses are fed to the first phase detector and to the coincidence detector. This coincidence detector is used to detect whether the line oscillator is synchronised with the incoming signal and can also be used for transmitter identification. This circuit can be made less sensitive by means of the STM bit. This mode can be used during search tuning to avoid that the tuning system will stop at very weak input signals. The first PLL has a very high statically steepness so that the phase of the picture is independent of the line frequency. The horizontal drive signal is generated by an internal VCO, which is running at a frequency of 25 MHz. This oscillator is stabilised to that frequency by using the 12 MHz frequency of the crystal oscillator as a reference. The time-constant of the first loop

can be forced by the I 2 C-bus (fast or slow). If required the IC can select the time-constant depending on the noise content of the incoming video signal. The horizontal output signal is generated by means of a second loop, which compares the phase of the internal oscillator signal with the phase of the incoming flyback pulse. The time-constant of this loop is connected externally and can be used as input for a dynamic horizontal phase correction. To obtain a smooth switch-on and switch-off behaviour of the horizontal output stage the horizontal drive signal is switched-on and off via the soft-start/soft-stop procedure. This function is realised by means of a variation of the TON of the horizontal drive pulse. When the soft-start procedure is completed the horizontal output is gated with the flyback pulse so that the horizontal output transistor cannot be switched-on during the flyback time. An additional function of the IC is the ` low-power start-up'feature. For this function a supply voltage with a value between 3 and 5 V must be available at the start-up pin (required current 5 mA typical). When all sub-address bytes have been sent and the POR and XPR flags have been cleared, the horizontal output can be switched-on via the STB-bit (sub-address 24H). In this condition the horizontal drive signal has the nominal TOFF and the TON grows gradually from zero to the nominal value as indicated in the softstart behaviour. As soon as the 8 V supply is present the switch-on procedure (e.g. closing of the second loop) is continued. The presence of the 8 V supply voltage is indicated by the SUP bit in the I 2 C-bus output byte 02. The circuit generates a vertical sync pulse. This pulse can be selected on pin 49 via the bits CMB1 and CMB0. In the 100 Hz input processor versions the vertical sync pulse is available on pin 63 and the horizontal pulse on pin 56. Via the I C-bus adjustments can be made of the horizontal and vertical geometry. The vertical sawtooth generator drives the vertical output drive circuit, which has a differential output current. For the E-W drive a single ended current output is available. A special feature is the zoom function for both the horizontal and vertical deflection and the vertical scroll function. When the horizontal scan is reduced to display 4 : 3 pictures on a 16 : 9 picture tube an accurate video blanking can be switched on to obtain well-defined edges on the screen. Overvoltage conditions (X-ray protection) can be detected via the EHT tracking pin. When an overvoltage condition is detected the horizontal output drive signal will be switched-off via the slow stop procedure but it is also possible that the drive is not switched-off and that just a protection indication is given in the I 2 C-bus output bytes. The choice is made via the input bit PRD. When PRD = 1 and an overvoltage is detected the drive is switched-off and the STB bit is set to 0. Switching on of the drive is only possible when the XPR flag is cleared. The IC has a second protection input on the j2 filter capacitor pin. When this input is activated the drive signal is switched-off immediately and switched-on again via the slow start procedure. For this reason this protection input can be used as ` flash protection' The drive pulses for the vertical sawtooth generator is obtained from a vertical . countdown circuit. This countdown circuit has various windows depending on the incoming signal (50 Hz or 60 Hz and standard or non-standard). The countdown circuit can be forced in various modes by means of the I 2 C-bus. During the insertion of RGB signals the maximum vertical frequency is increased to 72 Hz so that the circuit can also synchronise on signals with a higher vertical frequency like VGA. To obtain short switching times of the countdown circuit during a channel change the divider can be forced in the search window by means of the NCIN bit. The vertical deflection can be set in the de-interlace mode via the I 2 C bus. 2.5. Chroma and Luminance processing The circuit contains a chroma bandpass and trap circuit. The filters are realised by means of gyrator circuits and they are automatically calibrated by comparing the tuning frequency with the reference frequency of the decoder. The luminance delay line and the delay for the peaking circuit are also realised by means of gyrator circuits. The centre frequency of the chroma bandpass filter is switchable via the I 2 C-bus so that the performance can be optimised for ` front-end'signals and external CVBS signals. During SECAM reception the centre frequency of the chroma trap is reduced to get a better suppression of the SECAM carrier frequencies. 2.6. Colour Decoder The colour decoder can decode PAL, NTSC and SECAM signals. The internal clock signals for the various colour standards are generated by means of an internal VCO, which uses the 12 MHz crystal frequency as a reference. Under bad-signal conditions (e.g. VCR-playback in feature mode), it may occur that the colour killer is activated although the colour PLL is still in lock. When this killing action is not wanted it is possible to overrule the colour killer by forcing the colour decoder to the required standard and to activate the FCO-bit (Forced Colour On) in subaddress 21H. The IC contains an

Automatic Colour Limiting (ACL) circuit which is switchable via the I 2 C-bus and which prevents that oversaturation occurs when signals with a high chroma-to-burst ratio are received. The ACL circuit is designed such that it only reduces the chroma signal and not the burst signal. This has the advantage that the colour sensitivity is not affected by this function. The SECAM decoder contains an autocalibrating PLL demodulator which has two references, viz: the divided 12 MHz reference frequency of the crystal oscillator which is used to tune the PLL to the desired free-running frequency and the bandgap reference to obtain the correct absolute value of the output signal. The VCO of the PLL is calibrated during each vertical blanking period, when the IC is in search or SECAM mode. The reference frequency of the colour decoder is fed to the Fsc output (pin 49) and can be used to tune an external comb filter. The base-band delay line is integrated. The demodulated colour difference signals are internally supplied to the delay line. The colour difference matrix switches automatically between PAL/SECAM and NTSC, however, it is also possible to fix the matrix in the PAL standard. 2.7. PICTURE IMPROVEMENT FEATURES In the TDA 8885 series various picture improvement features have been integrated. These features are: -Video dependent coring in the peaking circuit. The coring can be activated only in the low-light parts of the screen. This effectively reduces noise while having maximum peaking in the bright parts of the picture. -Colour Transient Improvement (CTI). This circuit improves the rise and fall times of the colour difference signals. The function is realised by using delay cells with a length of 300 ns. -Black-stretch. This circuit corrects the black level for incoming video signals, which have a deviation between the black level and the blanking, level (back porch). The time constant for the black stretcher is realised internally -Blue-stretch. This circuit is intended to shift colour near ` white'with sufficient contrast values towards more blue to obtain a brighter impression of the picture -White-stretch. This function adapts the transfer characteristic of the luminance amplifier in a nonlinear way dependent on the picture content. The system operates such that maximum stretching is obtained when signals with a low video level are received. For bright pictures the stretching is not active. -Dynamic skin tone (flesh) control. This function is realised in the YUV domain by detecting the colourss near to the skin tone. The correction angle can be controlled via the I2 C-bus. 2.8. RGB output circuit and black-current stabilisation The ICs have a very flexible control circuit for RGB and YUV input signals, which has the following features: · Input which can be used for YUV or RGB input signals and as YUV interface. The selection of the various modes can be realised via the I2 C-bus. For the YUV input 2 different input signal conditions can be chosen. It is also possible to connect the synchronisation circuit to the incoming Y input signal. This input signal can be controlled on saturation, contrast and brightness. · The RGB-1 input which is intended for OSD/text signals and which can be controlled on contrast and brightness. By means of the IE1 bit the insertion blanking can be switched on or off. Via the IN1 bit it can be read whether the insertion pin has a high level or not. It is also possible to convert the incoming RGB-1 signal to a YUV signal. The resulting signal is supplied to the YUV outputs. · The TDA 888X versions have an additional YUV or RGB input which can be controlled on contrast, saturation and brightness. The various input signal conditions are given. The insertion blanking of this input can be switched-off by means of the IE2 bit. Via the IN2 bit it can be read whether the insertion pin has a high level or not. The control circuit has a half tone input, which can be used to reduce the contrast setting during mixed mode operation for teletext and OSD signals. The output signal has amplitude of about 2 V black-to-white at nominal input signals and nominal settings of the controls. To increase the flexibility of the IC it is possible to insert OSD and/or teletext signals directly at the RGB outputs. This insertion mode is controlled via the insertion input (pin 38). This blanking action at the RGB outputs has some delay, which must be compensated externally. To obtain an accurate biasing of the picture tube the ` Continuous Cathode Calibration'system has been included in this IC. Via the I2 C-bus a black level offset can be made with respect to the level which is generated by the black current stabilisation system. In this way different colour temperatures can be obtained for the bright and the dark part of the picture.

The black current stabilisation system checks the output level of the 3 channels and indicates whether the black level of the highest output is in a certain window (WBC-bit) or below or above this window (HBC-bit). This indication can be read from the I2 C-bus and can be used for automatic adjustment of the Vg2 voltage during the production of the TV receiver. The control circuit contains a beam current limiting circuit and a peak white limiting circuit. The peak white level is adjustable via the I2 C-bus. To prevent that the peak white limiting circuit reacts on the high frequency content of the video signal a low-pass filter is inserted in front of the peak detector. The circuit also contains a soft-clipper, which prevents that the high frequency peaks in the output signal become too high. The difference between the peak white limiting level and the soft clipping level is adjustable via the I2 C-bus in a few steps. During switch-off of the TV receiver, the black current control circuit generates a fixed beam current. This current ensures that the picture tube capacitance is discharged. During the switch-off period the vertical deflection can be placed in an overseen position so that the discharge is not visible on the screen.

2.9. EAST ­ WEST OUTPUT STAGE In order to obtain correct tracking of the vertical and horizontal EHT-correction, the EW output stage should be dimensioned as illustrated in Figure. Resistor REW determines the gain of the EW output stage. Resistor Rc determines the reference current for both the vertical sawtooth generator and the geometry processor. The preferred value of Rc is 39 kW which results in a reference current of 100 mA (Vref = 3.9 V). The value of REW must be: REW = RC * ( Vscan / (18* Vref ) ) Example: With Vref = 3.9 V; Rc =39 kohm and Vscan = 120 V then REW =68 kohm

3. TUNER PLL tuner is used as a tuner. UV1316 (VHF/UHF) is used as a PLL tuner. For only PALM/N, NTSC M applications UV 1336 are used as the PLL tuner. Channel coverage of UV1316: OFF-AIR CHANNELS BAND CHANNELS FREQUENCY RANGE (MHz) RANGE (MHz) Low Band 69.25 to 154.25 E2 to C 48.25 to 82.25 (1) S01 to S08 FREQUENCY CHANNELS CABLE CHANNELS

Mid Band 161.25 to 439.25 High Band 447.25 to 463.25

E5 to E12

175.25 to 224.25

S09 to S38

E21 to E69

471.25 to 855.25 (2)

S39 to S41

(1). Enough margin is available to tune down to 45.25 MHz. (2). Enough margin is available to tune up to 863.25 MHz.

Low band Mid band High band

Typical Max. : 5dB 52dB : 5dB 8dB : 6dB

Max. 9dB 9dB 9dB

All channels Gain Taper (of-air channels)

Min. : 38dB : -

Typical 44dB -

Channel Coverage UV1336: BAND CHANNELS FREQUENCY RANGE (MHz) 55.25 to 139.25 145.25 to 391.25 397.25 to 801.25

Low Band Mid Band High Band

2 to D E to PP QQ to 69

Noise is typically 6dB for all channels. Gain is minimum 38dB and maximum 50dB for all channels.

4. VIDEO SWITCH TEA6415C In case of three or more external sources are used, the video switch IC TEA6415C is used. The main function of this device is to switch 8 video-input sources on the 6 outputs. Each output can be switched on only one of each input. On each input an alignment of the lowest level of the signal is made (bottom of sync. top for CVBS or black level for RGB signals). Each nominal gain between any input and output is 6.5dB.For D2MAC or Chroma signal the alignment is switched off by forcing, with an external resistor bridge, 5VDC on the input. Each input can be used as a normal input or as a MAC or Chroma input (with external Resistor Bridge). All the switching possibilities are changed through the BUS. Driving 75ohm load needs an external resistor. It is possible to have the same input connected to several outputs. 5. MULTI STANDARD SOUND PROCESSOR

The MSP 34x0D is designed to perform demodulation of FM or AM-Mono TV sound. Alternatively, two-carrier FM systems according to the German or Korean terrestrial specs or the satellite specs can be processed with the MSP 34x0D. Digital demodulation and decoding of NICAM-coded TV stereo sound, is done only by the MSP 3410. The MSP 34x0D offers a powerful feature to calculate the carrier field strength which can be used for automatic standard detection (terrestrial) and search algorithms (satellite).



TDA7265 is a class AB dual Audio power amplifier assembled in the multiwatt package. Mute stand-by function of the audio amplifier can be described as the following; the pin 5 (MUTE/STAND-BY) controls the amplifier status by two different thresholds, referred to +Vs. When Vpin (5) higher than (+Vs - 2.5V) the amplifier is in Stand-by mode and the final stage generators are off. When Vpin (5) is between (+Vs ­ 2.5V) and (+Vs ­ 6V) the final stage current generators are switched on and the amplifier is in mute mode. When the Vpin (5) is lower than +Vs ­ 6V the amplifier is play mode.



The IC TDA9379FA is the vertical deflection booster circuit. Two supply voltages, +12V and ­12V are needed to scan the inputs VERT+ and VERT-, respectively. And a third supply voltage, +45V for the flyback limiting are needed. The vertical deflection coil is connected in series between the output and feedback to the input.

The TDA6107/08Q includes three video output amplifiers in a SIL 9 MP (Single in Line 9 pins Medium Power) package SOT111BE, using high-voltage DMOS technology, and is intended to drive the three cathodes of a colour picture tube. In contrast to previous types of DMOS video amplifiers, all external resistors (Rf, Ri and Ra) are integrated, so the gain is fixed. To obtain maximum performance, the amplifier should be used with black-current control and mounted on the CRT panel. 9. COMBFILTER TDA 9181

The TDA 9181 is an adaptive PAL/NTSC comb filter with two internal delay lines, filters, clock control, and input clamps. Video standards PAL B, G, H, I, M and N NTSC M are supported.
Two CVBS input signals can be selected by means of input switch. In addition to the comb filter the circuit contains an output switch so that a selection can be made between the combed CVBS signal and an external Y/C signal. The supply voltage is 5V. 10. POWER SUPPLY (SMPS) The DC voltages required at various parts of the chassis are provided by an SMPS transformer controlled by the IC MC44608, which is designed for driving, controlling and protecting switching transistor of SMPS. The transformer produces 150V for FBT input, ? 14V for audio output IC, S+3.3, S+5V and 8V for TDA8885. 11. POWER FACTOR CORRECTION

The MC33260 is a controller for Power Factor Correction pre-converters meeting international standard requirements in electronic ballast and off­line power conversion applications. Designed to drive a free frequency discontinuous mode, it can also be synchronised and in any case, it features very effective protections that ensure a safe and reliable operation.

12.1. General Features · Feature selection via special function register · Simultaneous reception of TTX, VPS, PDC, and WSS (line 23) · Supply Voltage 2.5 and 3.3 V · ROM version package P-SDIP 52 · ROMless version package P-LCC84 12.2. External Crystal and Programmable clock · Single external 6MHz crystal, all necessary clocks are generated internally · CPU clock speed selectable via special function registers. · Normal Mode 33.33 MHz CPU clock, Power Save mode 8.33 MHz 12.3. Microcontroller Features · 8bit 8051 instruction set compatible CPU. · 33.33-MHz internal clock (max.) · 0.360 ms (min.) instruction cycle · Two 16-bit timers · Watchdog timer · Capture compare timer for infrared remote control decoding · Pulse width modulation unit (2 channels 14 bit, 6 channels 8 bit) · ADC (4 channels, 8 bit) · UART


12.4. Memory · Non-multiplexed 8-bit data and 16 ... 20-bit address bus (ROMless Version) · Memory banking up to 1Mbyte (ROMless version) · Up to 128 Kilobyte on Chip Program ROM · Eight 16-bit data pointer registers (DPTR) · 256-bytes on-chip Processor Internal RAM (IRAM) · 128bytes extended stack memory. · Display RAM and TXT/VPS/PDC/WSS-Acquisition-Buffer directly accessible via MOVX · UP to 16KByte on Chip Extended RAM (XRAM) consisting of; - 1 Kilobyte on-chip ACQ-buffer-RAM (access via MOVX) - 1 Kilobyte on-chip extended-RAM (XRAM, access via MOVX) for user software - 3 Kilobyte Display Memory 12.5. Display Features · ROM Character set supports all East and West European Languages in single device · Mosaic Graphic Character Set · Parallel Display Attributes · Single/Double Width/Height of Characters · Variable Flash Rate · Programmable Screen Size (25 Rows x 33...64 Columns) · Flexible Character Matrixes (HxV) 12 x 9...16 · Up to 256 Dynamical Redefinable Characters in standard mode; 1024 Dynamical Redefinable Characters in Enhanced Mode · CLUT with up to 4096 colour combinations · Up to 16 Colours per DRCS Character · One out of Eight Colours for Foreground and Background Colours for 1-bit DRCS and 12.6. ROM Characters · Shadowing · Contrast Reduction · Pixel by Pixel Shiftable Cursor With up to 4 Different Colours · Support of Progressive Scan and 100 Hz. · 3 X 4Bits RGB-DACs On-Chip · Free Programmable Pixel Clock from 10 MHz to 32MHz · Pixel Clock Independent from CPU Clock · Multinorm H/V-Display Synchronisation in Master or Slave Mode 12.7. Acquisition Features · Multistandard Digital Data Slicer · Parallel Multi-norm Slicing (TTX, VPS, WSS, CC, G+) · Four Different Framing Codes Available · Data Caption only limited by available Memory · Programmable VBI-buffer · Full Channel Data Slicing Supported · Fully Digital Signal Processing · Noise Measurement and Controlled Noise Compensation · Attenuation Measurement and Compensation · Group Delay Measurement and Compensation · Exact Decoding of Echo Disturbed Signals 12.8. Ports · One 8-bit I/O-port with open drain output and optional I 2 C Bus emulation support (Port0) · Two 8-bit multifunction I/O-ports (Port1, Port3) · One 4-bit port working as digital or analogue inputs for the ADC (Port2) · One 2-bit I/O port with secondary functions (P4.2, 4.3, 4.7) · One 4-bit I/O-port with secondary function (P4.0, 4.1, 4.4) (Not available in P-SDIP 52)

13. SERIAL ACCESS CMOS 8K (1024*8) EEPROM ST24C08 The ST24C08 is a 8Kbit electrically erasable programmable memory (EEPROM), organised as 4 blocks of 256*8 bits. The memory is compatible with the I˛C standard, two wire serial interface, which uses a bi-directional data bus and serial clock. The memory carries a built-in 4 bit, unique device identification code (1010) corresponding to the I˛C bus definition. This is used together with 1 chip enable input (E) so that up to 2*8K devices may be attached to the I˛C bus and selected individually. 14. CLASS AB STEREO HEADPHONE DRIVER TDA1308 The TDA1308 is an integrated class AB stereo headphone driver contained in a DIP8 plastic package. The device is fabricated in a 1 mm CMOS process and has been primarily developed for portable digital audio applications. 15. SAW FILTERS Saw filter type : Model: K9356M : PAL-SECAM B/G/D/K/I STEREO (AUDIO IF) K9656M : PAL-SECAM B/G/D/K/I/L/L'STEREO (AUDIO IF) K3958M : PAL-SECAM B/G/D/K/I/L/L'STEREO (VIDEO IF) 16. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? IC DESCRIPTIONS AND INTERNAL BLOCK DIAGRAM TDA8885 TUNER (UV1315, UV1316) TEA6415C TDA 7265 TDA6108Q 74HCT32 MC44608 SDA5555 TDA9181 TCD1102 ST24C08 TDA1308 PCF8583 MC33260 STV9379 MSP34XXG LM358N

16.1. 16.1.1.


The TDA 8885 is I 2 C-bus controlled singlechip TV processors, which are intended to be applied in PAL/NTSC and multi-standard television receivers. These ICs are largely compatible with the TDA 884X/5X series. Also in this IC family we have versions with a mono intercarrier FM sound channel and versions with a QSS IF amplifier. The main difference between the TDA 884X/5X series and the TDA 886X/7X/8X series is that the latter contains integrated sound band-pass (in mono FM versions) and trap circuits, a switchable group delay correction circuit and a multi-standard colour decoder which needs only one inexpensive (12 MHz) reference crystal for all standards. Furthermore various picture improvement features have been included.

· · · ·


Multi-standard vision IF circuit with an alignment-free PLL demodulator without external components Internal (switchable) time-constant for the IF-AGC circuit Switchable sound trap and group delay correction circuit for the demodulated CVBS signal Flexible source selection with CVBS switch and a Y (CVBS)/C input so that a comb filter can be applied · Integrated chrominance trap circuit · Integrated luminance delay line with adjustable delay time · Integrated chroma band-pass filter with switchable centre frequency

· Colour decoder which needs only one 12 MHz reference crystal (or external clock signal) for all standards · Blanking of the ` helper signals' for PAL PLUS and EDTV-2 · Several picture improvement features. · Internal base-band delay line · YUV interface · Linear RGB input and fast blanking · RGB control circuit with ` Continuous Cathode Calibration' white point and black level offset , adjustment so that the colour temperature of the dark and the light parts of the screen can be chosen independently. · Adjustable peak white limiting circuit · Half-tone (contrast reduction) possibility during mixed-mode of OSD and text signals · Possibility to insert a ` blue back' option when no video signal is available · Horizontal synchronisation with two control loops and alignment-free horizontal oscillator · Vertical count-down circuit · Vertical driver optimised for DC-coupled vertical output stages for improved geometry · Vertical geometry processing. · Low-power start-up for the horizontal drive circuit · I 2 C-bus control of various functions · · · · · · · · · · · · · · ·

· QSS sound IF amplifier

AM sound demodulator PAL decoder SECAM decoder NTSC decoder Additional RGB/ YUV input Black stretch and Blue stretch Dynamic skin tone control and coring on complete video signal Video dependent coring and Colour Transient Improvement White stretch and green enhancement Horizontal geometry (EW) Horizontal and vertical zoom Horizontal parallelogram and angle correction 2 nd CVBS output Additional YUV/ RGB input with saturation control 2 (I 2 C- bus controlled) switch outputs, which can be used to switch external circuits

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

Pin Description

IF input 1 IF input 2 EHT/overvoltage protection input vertical sawtooth capacitor reference current input ground (vision/QSS IF amplifier and sound) tuner AGC output de-emphasise (front-end sound out) or selected sound out or AM sound in (1) SIF input 1 decoupling sound demodulator SIF input 2 narrow-band PLL filter AGC sound IF external audio input QSS intercarrier out or AM output or external audio input (2) internally connected half tone (contrast reduction) low-power start-up IF-PLL loop filter IF video output serial clock input serial data input/output white stretch capacitor chrominance input (S-VHS) external CVBS/Y 3 input output switch 1 (I 2 C) main supply voltage (+8V) (vision/QSS amplifier, filters, CTI and sound)

24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

internal CVBS input ground 1 (colour decoder and synchronisation) CVBS-2 output audio out (volume controlled) / IF video out (3) AM audio output (volume controlled) SECAM PLL decoupling CVBS/Y 2 input black-current input blue output green output red output beam current limiter input/V-guard input red input for insertion green input for insertion blue input for insertion RGB insertion input luminance input luminance output 2nd V/R input 2nd Y/G input 2nd U/B input 2nd RGB insertion input U signal output or YUV-RGB insertion input (4) V signal output or Y input or G input (4) U or B signal input (4) V or R signal input (4) Ref. signal out or AVL or V-sync out (5) Ref. signal out or AM out or V-sync out (5) decoupling digital supply 12 MHz crystal connection 12 MHz crystal connection 2nd supply voltage (+8 V) (colour decoder, control, synchronisation and geometry) CVBS-1 output bandgap decoupling horizontal output flyback input / sandcastle output phase-2 filter phase-1 filter output switch 2 (I 2 C) ground 2 (filters, CTI, control and geometry) east-west drive output / Automatic Volume Levelling vertical drive B output vertical drive A output PARAMETER supply voltage supply current video IF amplifier sensitivity (RMS value) sound IF amplifier sensitivity (RMS value) external CVBS/Y input (peak-to-peak value) external chroma input voltage (burst amplitude)(peak-to-peak value) RGB inputs (peak-to-peak value) luminance input signal (peak-to-peak value) U input signal (peak-to-peak value) V input signal (peak-to-peak value) MIN. TYP. 8.0 tbf 35 60 1.0 0.3 0.7 1.4/1.0 1.33/+0.7 1.05/+0.7 MAX. UNIT V mA V V V V V V V V V mA mV mV V V

SYMBOL Supply VP IP Input voltages Vi(VIF)(rms) Vi(SIF)(rms) Vi(CVBS/Y)(p-p) Vi(CHROMA)(p-p) Vi(RGB)(p-p) Vi(YI)(p-p) Vi(UI)(p-p) Vi(VI)(p-p) Output signals Vo(IFVO)(p-p) Io(AGCOUT) Vo(QSSO)(rms) Vo(AMOUT)(rms) Vo(CVBSO)(p-p) Vo(VO/I)(p-p)

demodulated CVBS output (peak-to-peak value) 2.5 tuner AGC output current range 0 sound IF intercarrier output (RMS value) 100 demodulated AM sound output (RMS value) 500 CVBS output voltage video switch (peak-to-peak value) 2.0 ? V output/input voltage (peak-to-peak value) 1.05


Vo(UO/I)(p-p) Vo(YO/I)(p-p) Vo(RGB)(p-p) Io(HOUT) Io(VERT) Io(EWD)

? U output/input voltage (peak-to-peak value) Y output/input voltage (peak-to-peak value) RGB output signal amplitudes (peak-to-peak value) horizontal output current 10 vertical output current (peak-to-peak value) EW drive output current 1.2

1.33 1.4 2.0 1

V V V mA mA mA


UV1315, UV1316 General description of UV1315:


The UV1315 tuner belongs to the UV 1300 familiy of tuners, which are designed to meet a wide range of applications. It is a combined VHF, UHF tuner suitable for CCIR systems B/G, H, L, L' I and I' The low IF output impedance , . has been designed for direct drive of a wide variety of SAW filters with sufficient suppression of triple transient.

· · · · · ·

Features of UV1315:

Member of the UV1300 family small sized UHF/VHF tuners Systems CCIR:B/G, H, L, L' I and I' OIRT:D/K , ; Voltage synthesised tuning (VST) Off-air channels, S-cable channels and Hyperband Standardised mechanical dimensions and pinning Compact size PIN VALUE : 4.0V, Max:4.5V : : : : 5V, Min:4.75V, Max:5.5V 5V, Min:4.75V, Max:5.5V 5V, Min:4.75V, Max:5.5V 5V, Min:4.75V, Max:5.5V

PINNING 1. Gain control voltage (AGC) 2. Tuning voltage 3. High band switch 4. Mid band switch 5. Low band switch 6. Supply voltage 7. Not connected 8. Not connected 9. Not connected 10. Symmetrical IF output 1 11. Symmetrical IF output 2 Bandswitching table: Low band Mid band High band Pin 3 0V 0V +5V Pin 4 0V +5V 0V

Pin 5 +5V 0V 0V


General description of UV1316:

The UV1316 tuner belongs to the UV 1300 family of tuners, which are designed to meet a wide range of applications. It is a combined VHF, UHF tuner suitable for CCIR systems B/G, H, L, L' I and I' The low IF output impedance , . has been designed for direct drive of a wide variety of SAW filters with sufficient suppression of triple transient.

· · · · ·

Features of UV1316:

Member of the UV1300 family small sized UHF/VHF tuners Systems CCIR: B/G, H, L, L' I and I' OIRT: D/K , ; Digitally controlled (PLL) tuning via I2C-bus Off-air channels, S-cable channels and Hyperband World standardised mechanical dimensions and world standard pinning

· Compact size · Complies to "CENELEC EN55020" and "EN55013" PINNING 1. Gain control voltage (AGC) 2. Tuning voltage 3. I˛C-bus address select 4. I˛C-bus serial clock 5. I˛C-bus serial data 6. Not connected 7. PLL supply voltage 8. ADC input 9. Tuner supply voltage 10. Symmetrical IF output 1 11. Symmetrical IF output 2 PIN VALUE : 4.0V, Max:4.5V : Max:5.5V : Min:-0.3V, Max:5.5V : Min:-0.3V, Max:5.5V : 5.0V, Min:4.75V, Max:5.5V : 33V, Min:30V, Max:35V

16.3. 16.3.1.

TEA6415C: General Description:

The main function of the TEA6415C is to switch 8 video input sources on the 6 outputs. Each output can be switched to only one of the inputs whereas but any same input may be connected to several outputs. All switching possibilities are controlled through the I2C-bus.

· · · · · · · · ·


20 MHz Bandwidth Cascadable with another TEA6415C (Internal address can be changed by pin 7 voltage) 8 inputs (CVBS, RGB, Mac, CHROMA, ... ) 6 Outputs Possibility of MAC or chroma signal for each input by switching-off the clamp with an external resistor bridge Bus controlled 6.5dB gain between any input and output -55dB crosstalk at 5MHz Fully ESD protected PIN VALUE : Max : Low level : Max : Low level : Max : Max : : : : : : : : : : Max 12V Max Max 5.5Vpp, 5.5Vpp, 5.5Vpp, 5.5Vpp, 5.5Vpp, 5.5Vpp,

PINNING 1. Input 2. Data Vcc+0.5V 3. Input 4. Clock Vcc+0.5V 5. Input 6. Input 7. Prog 8. Input 9. Vcc 10. Input 11. Input 12. Ground 13. Output 14. Output 15. Output 16. Output 17. Output 18. Output 19. Ground 20. Input

: 2Vpp, Input Current : -0.3V Max:1.5V, High level : 2Vpp, Input Current : -0.3V Max:1.5V, High level : 2Vpp, Input Current : 2Vpp, Input Current : 2Vpp, Input Current : 2Vpp, Input Current : 2Vpp, Input Current Min : 4.5Vpp Min : 4.5Vpp Min : 4.5Vpp Min : 4.5Vpp Min : 4.5Vpp Min : 4.5Vpp

: 1mA, Max : 3mA : 3.0V Max : : 1mA, Max : 3mA : 3.0V Max : : 1mA, Max : 3mA : 1mA, Max : 3mA : 1mA, Max : 3mA : 1mA, Max : 3mA : 1mA, Max : 3mA

: Max : 2Vpp, Input Current

: 1mA, Max : 3mA



The TDA7265 is a 25W+25W stereo sound amplifier with mute/stand-by facility. STPA control signal coming from microcontroller (when it is at high level) activates the mute function. IC is muted when mute port is at low level. Two stereo audio signals coming from audio module is injected to the inputs of the IC and a power of 12Wrms (10%) is obtained. An external pop-noise circuitry pulls AF inputs of the IC in order to eliminate pop noise when TV is turned on or off via mains supply connection. It is possible to adjust the gain of the amplifiers by feedback external resistors.

· · · · ·


Wide supply voltage range (up to 50V ABS Max.) Split supply

· · · ·

High output power: 25+25 W @ TDA = 10%, RL = 8ohm, VS = ±20V No pop at turn-on / off Mute (pop free) Stand-By feature (low IQ) Few external components Thermal overload protection Adjustable gain via an external resistor

16.4.2. 1. Output (1) 2. +Vs 3. Output (2) 4. Mute / St-By 5. -Vs 6. Input (2) 7. Ground 8. Input (1)




The TDA6108Q consists of three monolithic video output amplifiers. The amplifier can be seen as an operational amplifier with negative feedback. The advantage of negative feedback is that the amplifier characteristics do not play an important role up to certain frequencies. The internal flash diodes protect the amplifiers against flash over in the picture tube. The only protections required at the cathode outputs are a flash resistor and a spark gap. Furthermore, the device needs only one power supply voltage (Vdd). The TDA6108Q is provided with a black current data pin.

· · · · · · · · · · ·


No external components, only the well known supply decoupling Very simple application with a variety of colour decoders Black-current measurement output for automatic black current stabilisation Only one supply voltage needed Internal protection against positive appearing CRT flash-over discharges Protection against ESD Internal reference voltage Thermal protection Controllable switch-off behaviour Very small PCB dimensions Very high replacement value PIN VALUE


1. 2. 3. 4. 5.

Inverting input 1 Inverting input 2 Inverting input 3 Ground BSC-output

:2Vpp :2Vpp :2Vpp :Max:7V

6. 7. 8. 9.

Supply voltage Cathode output 3 Cathode output 2 Cathode output 1

:200VDC :20mA, 100Vpp :20mA, 100Vpp :20mA, 100Vpp


74 HCT 32

The 74HC/HCT32 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC. The 74HC/HCT32 provide the 2-input OR function.

1, 4, 9, 12 2, 5, 10, 13 3, 6, 8, 11 7 14

: 1A to 4A data inputs : 1B to 4B data inputs : 1Y to 4Y data outputs : GND ground (0 V) : VCC positive supply voltage

For HC the condition is VI = GND to VCC For HCT the condition is VI = GND to VCC ? ? 1.5 V



16.7.1. General description: The MC44608 is a high performance voltage mode controller designed for off­line converters. This high voltage circuit that integrates the start­up current source and the oscillator capacitor, requires few external components while offering a high flexibility and reliability.
The device also features a very high efficiency stand­by management consisting of an effective Pulsed Mode operation. This technique enables the reduction of the stand­by power consumption to approximately 1W while delivering 300mW in a 150W SMPS. · Integrated start­up current source · Lossless off­line start­up · Direct off­line operation · Fast start­up


General Features

· Flexibility · Duty cycle control · On chip oscillator switching frequency 40, or 75kHz · Secondary control with few external components Protections · Maximum duty cycle limitation · Cycle by cycle current limitation · Demagnetisation (Zero current detection) protection · "Over V CC protection" against open loop · Programmable low inertia over voltage protection against open loop · Internal thermal protection GreenLine Controller · Pulsed mode techniques for a very high efficiency low power mode · Lossless start-up · Low dV/dT for low EMI radiation's PINNING PIN VALUE

1. Demagnetisation 2. I Sense

Zero cross detection voltage: 50 mV typ. Over current protection voltage 1V typ.

3. 4. 5. 6. 7. 8.

Control Input Ground Driver Supply voltage No connection Line Voltage

Min: 7.5V Max.: 18V Iout 2Ap-p during scan 1.2Ap-p during flyback Output resistor 8.5 Ohm sink 15 Ohm source typ. Max:16V (Operating range 6.6V-13V) Min:50V Max:500V

16.8. 16.8.1.

SDA5555: General description:

· Feature selection via special function register · Simultaneous reception of TTX, VPS, PDC, and WSS (line 23) · Supply Voltage 2.5 and 3.3 V

PINNING 1 Comb Filter Standard Selection 1 2 Key 2 3 Key 1 4 Loc.key.switch input 5 Loc.key.switch input 6 Loc.key.switch input 7 Loc.key.switch input 8 Mute output 9 Digital supply voltage 10 Ground 11 Digital supply voltage 12 CVBS input 13 Analogue supply voltage 14 Analogue ground 15 Wake Interrupt 16 AV-1 status input 17 AV-2 status input 18 Shortcut protection 19 SAND input 20 ODD/EVEN output 21 DVD 12 V Sense 22 Not used 23 Idle Off 24 IR-input 25 Data output 26 Clock signal output 27 Stand-By Mode selection 28 Not used 29 Ground 30 Digital supply voltage 31 Write Protect output 32 Service output 33 Reset output 34 6 MHz cristal connection 2 35 6 MHz cristal connection 1 36 Analogue ground 37 Analogue supply voltage 38 OSD-Red output

Low Level : Low Level : Low Level : Low Level : Low Level : Low Level : Low Level : Low Level : 2.5 V 3.3 V 1 Vpp 2.5 V Low Level : Low Level : Low Level : Low Level : Low Level : Low Level : Low Level : Low Level : Low Level : Low Level : Low Level : Low Level :

0V 0V 0V 0V 0V 0V 0V 0V

High Level : High Level : High Level : High Level : High Level : High Level : High Level : High Level :

3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V

0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V

High Level : High Level : High Level : High Level : High Level : High Level : High Level : High Level : High Level : High Level : High Level : High Level :

3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V

3.3 V Low Level : Low Level : Low Level : Low Level : Low Level :

0V 0V 0V 0V 0V

High Level : High Level : High Level : High Level : High Level :

3.3 V 3.3 V 3.3 V 3.3 V 3.3 V

2.5 V 0.7 Vpp to 1.2 Vpp

39 40 41 42 43 44 45 46 47 48 49 50 51 52

OSD-Green output OSD-Blue output OSD-Blanking output Digital supply voltage Ground Digital supply voltage PAL / SECAM Degauss Horizontal Trapezoid Tilt Not used Micro s. select Comb Filter Standard Selection 2 SVHS Sense

0.7 Vpp to 1.2 Vpp 0.7 Vpp to 1.2 Vpp Low Level : 0V 2.5 V 3.3 V Low Level : Low Level : Low Level : Low Level :

High Level : 3.3 V

0V 0V 0V 0V

High Level : High Level : High Level : High Level :

3.3 V 3.3 V 3.3 V 3.3 V

Low Level : 0V Low Level : 0V Low Level : 0V

High Level : 3.3 V High Level : 3.3 V High Level : 3.3 V



Pin-1 = Cý n=Chrominance input signal Pin-2 = INPSEL=input switch select input Pin-3 =Y/CVBS2=luminance or CVBS input signal 2 Pin-4 = Digital GND Pin-5= VDD=digital supply voltage Pin-6=VCC=analog supply voltage Pin-7 =SC=sandcastle input signal Pin-8 =FSCSEL=color subcarrier select input Pin-9 = FSC=color subcarrier input signal Pin-10 =SYS2=standart select 2 input Pin-11 = SYS1=standart select 1 input Pin-12 =Y/CVBS1=luminance or CVBS input signal Pin-13 = analogue GND Pin-14 = Y/CVBSout=luminance or CVBS output signal Pin-15 =OUTSEL=output switch select input Pin-16 =Cout=chrominance output signal 16.9.1. General Features: -One chip multistandart adaptive comb filter -Cross luminance reduction -Cross colour reduction -No chroma trap, so sharper vertical luminance -Analogue discrete-time signal processing, so no quantization noise -Anti aliasing and reconstruction filters are included -Input switch selects between two Y/CVBS inputs -Output switch selects between combed CVBS and an external Y/C source -Fsc as well as 2*fsc colour subcarrier signal may be applied -Alignment free -Few external components -Low power 16.9.2. Limits: -Analogue supply voltage Vcc=5.5V(max) -Analogue supply current Icc=25mA(typ) -Digital supply voltage Vdd=5.5(V)(max) -Digital supply current Idd=10Ma(typ) -Luminance or CVBS input signal (p-p) Y/CVBS1, 2 1.4V(max)

-Chrominance input signal (p-p) Cin=1.0V(max)



16.10.1. Description The TCET110./ TCET2100/ TCET4100 consists of a phototransistor optically coupled to a gallium arsenide infrared emitting diode in a 4-lead plastic dual inline package. The elements are mounted on one leadframe using a coplanar technique, providing a fixed distances between input and output for highest safety requirements. 16.10.2. Applications Circuits for safe protective separation against electrical shock according to safety class II (reinforced isolation): For appl. class I ­ IV at mains voltage ? 300 V For appl. class I ­ III at mains voltage ? 600 V according to VDE 0884, table 2, suitable for: Switch-mode power supplies, line receiver, computer peripheral interface, microprocessor system interfaces. VDE 0884 related features: Rated impulse voltage (transient overvoltage) V IOTM = 8 kV peak Isolation test voltage (partial discharge test voltage) V pd = 1.6 kV Rated isolation voltage (RMS includes DC) V IOWM = 600 V RMS (848 V peak) Rated recurring peak voltage (repetitive) V IORM = 600 V RMS 16.10.3. General features: CTR offered in 9 groups Isolation materials according to UL94-VO Pollution degree 2 (DIN/VDE 0110 / resp. IEC 664) Climatic classification 55/100/21 (IEC 68 part 1) Special construction: Therefore, extra low coupling capacity of typical 0.2 pF, high Common Mode Rejection Low temperature coefficient of CTR G = Leadform 10.16 mm; provides creepage distance > 8 mm, for TCET2100/ TCET4100 optional; suffix letter ` is not marked on the optocoupler G' Coupling System U


ST24C08: General description:


The ST24C08 is an 8Kbit electrically erasable programmable memory (EEPROM), organised as 4 blocks of 256 * 8 bits. The memory operates with a power supply value as low as 2.5V. Both Plastics Dual-in-Line and Plastic Small Outline packages are available.

· · · ·


Minimum 1 million ERASE/WRITE cycles with over 10 years data retention Single supply voltage:4.5 to 5.5V Two wire serial interface, fully I2C-bus compatible Byte and Multibyte write (up to 8 bytes)

· Page write (up to 16 bytes) · Byte, random and sequential read modes · Self timed programming cycle PINNING 1. Write protect enable (Ground) 2. Not connected (Ground) 3. Chip enable input (Ground) 4. Ground 5. Serial data address input/output 6. Serial clock 7. Multibyte/Page write mode 8. Supply voltage PIN VALUE 0V 0V 0V 0V Input LOW voltage : Min : -0.3V, Max : 0.3*Vcc Input HIGH voltage: Min : 0.7*Vcc, Max : Vcc+1 : Input LOW voltage : Min: -0.3V, Max : 0.3*Vcc Input HIGH voltage: Min : 0.7*Vcc, Max : Vcc+1 : Input LOW voltage : Min: -0.3V, Max :0.5V Input HIGH voltage: Min : Vcc-0.5, Max : Vcc+1 : Min : 2.5V, Max : 5.5V : : : : :

16.12. 16.12.1.
· · · · · · -

TDA1308: Features:


Wide temperature range No switch ON/OFF clicks Excellent power supply ripple rejection Low power consumption Short-circuit resistant High performance high signal-to-noise ratio high slew rate low distortion Large output voltage swing PIN VALUE Min : 0.75V, Max : 4.25V Vo(clip) : Min : 1400mVrms 2.5V 0V 2.5V Vo(clip) : Min : 1400mVrms Min : 0.75V, Max : 4.25V 5V, Min : 3.0V, Max : 7.0V

PINNING 1. Output A (Voltage swing) 2. Inverting input A 3. Non-inverting input A 4. Ground 5. Non-inverting input B 6. Inverting input B 7. Output B (Voltage swing) 8. Positive supply

: : : : : : : :

16.13. 16.13.1.
· · · · · · · · · · · · ·


I 2 C-bus interface operating supply voltage: 2.5 V to 6 V Clock operating supply voltage (0 to +70 ? C):1.0 V to 6.0 V 240 8-bit low-voltage RAM Data retention voltage: 1.0 V to 6 V Operating current (at fSCL = 0 Hz): max. 50 ? A Clock function with four year calendar Universal timer with alarm and overflow indication 24 or 12 hour format 32.768 kHz or 50 Hz time base Serial input/output bus (I 2 C) Automatic word address incrementing Programmable alarm, timer and interrupt function Slave address: ­ READ: A1 or A3 ­ WRITE: A0 or A2.



The PCF8583 is a clock/calendar circuit based on a 2048-bit static CMOS RAM organised as 256 words by 8 bits. Addresses and data are transferred serially via the two-line bi-directional I 2 C-bus. The built-in word address register is incremented automatically after each written or read data byte. Address pin A0 is used for programming the hardware address, allowing the connection of two devices to the bus without additional hardware. The built-in 32.768 kHz oscillator circuit and the first 8 bytes of the RAM are used for the clock/calendar and counter functions. The next 8 bytes may be programmed as alarm registers or used as free RAM space. The remaining 240 bytes are free RAM locations. SYMBOL PIN DESCRIPTION OSCI 1 oscillator input, 50 Hz or event-pulse input OSCO 2 oscillator output A0 3 address input VSS 4 negative supply SDA 5 serial data line SCL 6 serial clock line INT 7 open drain interrupt output (active LOW) VDD 8 positive supply



16.14.1. General Features: -Standard Constant Output Voltage or "Follower Boost" Mode -Switch Mode Operation: Voltage Mode -Latching PWM for Cycle­by­Cycle On­Time Control -Constant On­Time Operation That Saves the Use of an Extra Multiplier -Totem Pole Output Gate Drive -Undervoltage Lockout with Hysteresis -Low Start­Up and Operating Current -Improved Regulation Block Dynamic Behaviour -Synchronisation Capability -Internally Trimmed Reference Current Source

16.14.2. Safety Features: -Overvoltage Protection: Output Overvoltage Detection -Undervoltage Protection: Protection Against Open Loop -Effective Zero Current Detection -Accurate and Adjustable Maximum On­Time Limitation -Overcurrent Protection -ESD Protection on Each Pin 16.14.3. LIMITS: -Vcc MAX voltage 16V -Gate drive current source=-500mA, sink=500mA -Input voltage ­0.3V to +1.0V -Operating junction Temperature +150 C

16.14.4. PINNING Pin1=Feedback input Pin2=Vcontrol Pin3=Oscillator capacitor(Ct)

Pin4=Current Sense Input Pin5=Synchronization Input Pin6=GND Pin7=Gate Drive Pin8=Vcc



16.15.1. DESCRIPTION Designed for monitors and high performance TVs, the STV9379FA vertical deflection booster can handle flyback voltage up to 90V. Further to this, it is possible to have a flyback voltage, which is more than the double of the supply (Pin 2). This allows to decrease the power consumption, or to decrease the flyback time for a given supply voltage. The STV9379FA operates with supplies up to 42V and provides up to 2.6APP output current to drive the yoke. The STV9379FA is offered in HEPTAWATT package. 16.15.2. PINNING Pin1 : Output Stage Supply Pin2 : Output Pin3 : GND or Negative Supply Pin4 : Flyback Supply Pin5 : Supply Voltage Pin6 : Inverting Input Pin7 : Non-inverting Input



MSP3410D The MSP3410D is an I2C controlled single-chip multistandard sound processor for applications in analog and digital TV sets. The full TV sound processing, starting with analog sound IF signal-in, down to processed analog AF-out is performed in a single-chip covering all European TV-standards. It is designed to simultaneously perform digital demodulation and decoding of NICAM-coded TV stereo sound, as well as demodulation of FM-mono TV sound and two FM systems according to the German or Korean terrestrial specs. It is also possible to do AMdemodulation according to the SECAM system. There is AGC for analog inputs: 0.14 - 3Vpp. All demodulation and filtering is performed on chip and is individually programmable. All digital NICAM standards (B/G, L, and I) are realised. Only one crystal clock (18.432Mhz) is necessary. External capacitors at each crystal pin to ground are required. They are necessary for tuning the open-loop frequency of the internal PLL and for stabilising the frequency in closed-loop operation. The higher the capacitors, the lower the clock frequency result. The nominal free running frequency should match the centre of the tolerance range between 18.433 and 18.431Mhz as closely as possible. By means of standardised I2S interface, additional feature processors (DPL35xx, Dolby Prologic processor for this chassis) can be connected to the IC. I2S bus interface consists of five pins: I2S_DA_IN1... 2 for input four channels (two channels per line) per sampling cycle (32Khz). I2DA_OUT, for output, two channels per sampling cycle (32KHz). I2S_CL, for timing of the transmission of I2S serial data, 1.024Mhz. I2S_WS, for the word strobe line defining the left and right sample.

Features: n 5-band graphic equalizer (as in MSP3400C) n Enhanced spatial affect (pseudo stereo / base-width enlargement as in MSP3400C) n Headphone channel with balance, bass treble, loudness n Balance for loudspeaker and headphone channels in dB units (optional)

n n n n n n n n n n n n n n n n n n n

Additional pair of D/A converters for SCART2 out Improved over-sampling filters (as in MSP 3400C) Additional SCART input Full SCART in/out matrix without restrictions SCART volume in dB units (optional) Additional I˛S input (as in MSP 3400C) New FM-identification (as in MSP 3400C) Demodulator short programming Auto-detection for terrestrial TV-sound standards Precise bit-error rate indication Automatic switch from NICAM to FM/AM or vice versa Improved NICAM synchronisation algorithm Improved carrier mute algorithm Improved AM-demodulation ADR together with DRP 3510A Dolby Pro Logic together with DPL 35xx A Reduction of necessary controlling Less external components Significant reduction of radiation
35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 53. 54. 55. 56. 57. 58. 59. 60. 61. 62. 63. 64. 65. 66. 67. 68. Analog Shield Ground 1 Scart input 3 in right Scart input 3 in left Analog Shield Ground 4 Scart input 4 in, right Scart input 4 in, left Not connected Analog reference voltage high voltage part Analog ground Volume capacitor MAIN Analog power supply 8.0V Volume capacitor AUX Scart output 1, left Scart output 1, right Reference ground 1 high voltage part Scart output 2, left Scart output 2, right Analog Shield Ground 3 Not connected Not connected Not connected Analog output MAIN, left Analog output MAIN, right to AVSS with Reference ground 2 high voltage part Analog output AUX, left Analog output AUX, right Power-on-reset Not connected Not connected Not connected I˛S2-data input Digital ground Digital power supply +5V ADR clock

Pinning: 1. ADR wordstrobe 2. Not connected 3. ADR data output 4. I˛S 1 data input 5. I˛S data output 6. I˛S wordstr