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KA8309B
INTRODUCTION
The KA8309B is BiCMOS integrated circuit designed for the servo control of the compact disc player application.
SERVO SIGNAL PROCESSOR
48 - QFP - 1010D
FEATURES
· Servo control functions; (focus, tracking, seld servo control) · Loop filter and VCO for EFM clock reproduction PLL · Provide function Preventing sled runaway Anti-shock Spindle servo Auto-sequencer · Provide adjustable peak of focus search, track jump and sled kick with external resistor · Low power consumption (100mW typ; ± 5V, 80mW ; 5V) · Single power supply, 5V · Split power supply, ± 5V
ORDERING INFORMATION
Device KA8309B Package 48-QFP-1010D Operating Temperature -20°C~+75°C
KA8309B
BLOCK DIAGRAM
SERVO SIGNAL PROCESSOR
DGND 26
LOCK
36
35
34
33
32
31
30
29
28
27
25
DVCC SPDLI
37 38
LPF VCO VIC LOOP -FILTER TTL/ CMOS 24 23 22 21 SLOAD SDATA REST DRCT
SPDLO 39
+ 3.5V REGULATOR
WDCK FOK MRR
40 41 42 TTL CMOS SEQUENCER OUTPUT DECODER FOCUS TRACKING GAIN GAIN CONTROL CONTROL TRACK JUMP PEAK VALUE CONTROL SLED JUMP PEAK VALUE CONTROL SERIAL TO PARALLEL DECODER CMOS/ TTL 20 19 18
SCLK
864M
MON
ISET
FSW
MDP
3.5V
FVC
BPF
DPI
CNO AVEE SENS
DVEE DFT
43 44
17 45
TRACKING PHASE COMPEN SATION SLED JUMP PEAK VALUE CONTROL
FSET
TKE
TZC
46
BPF WINDOWS COMPARATOR
TRACK JUMP PEAK VALUE CONTROL
+
+
14 13 + SLEO SLEN
FOCUS SEARCH PEAK VALUE CONTROL
+ FCE 48 FOCUS GAIN CONTROL 1 CV 2 HFGD 3 FS
FOCUS PHASE CO MPENSATION
-
HIGH FREQ. GAIN CONTROL
ATS
47 +
6 FSEI 7 FSCH 8 RTG 9 TG 10 AVCC 11 TKEO 12 TKEI
4 LFR
5 FSEO
Fig. 1
+ 16 STOP 15 SLEI
TRACKING GAIN CONTROL
KA8309B
PIN DESCRIPTION
SERVO SIGNAL PROCESSOR
Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
Symbol CV HFGD FS LFR FSEO FSEI FSCH RTG TG AVCC TKEO TKEI SLEN SLEO SLEI STOP FSET SENS AVEE CNO DRCT REST SDATA SLOAD SCLK DGND BPF Center voltage.
Description
Reduce high frequency gain with capacitor connected between pin 2 and pin 3. High frequency gain of focus servo can be changed by switching FS3 on or off. Rising low frequency bandwidth of focus loop. Focus servo error output. Inverting input pin for focus amplifier. Time constant external pin to generate focus search waveform. Time constant external pin to switch the tracking gain of high frequency. Provide time constant to change the high frequency tracking gain. Analog positive power supply. Tracking error output. Inverting input pin for tracking amplifier. Non-inverting input pin for tracking amplifier. Sled output. Inventing input pin for sled amplifier. Pin for detecting a signal for the on/off limit switch of the innermost part of the disc. Setting the peak frequency of the focus, tracking phase compensation and of the CLV LPF. Output pin for FZC, AS, TZC, STOP and BUSY by command from CPU. Analog negative power supply. Track number count output. Control pin for one track jump. Reset input pin, reset at "L". Serial data input. Latch input. Serial data transfer clock. Digital ground. Provide time constant for the loop filter.
KA8309B
PIN DESCRIPTION (Continued)
Pin No 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Symbol DPI ISET FVC 3.5V 864M LOCK MDP MON FSW DVCC SPDLI SPDLO WDCK FOK MRR DVEE DFT TKE TZC ATS FCE
SERVO SIGNAL PROCESSOR
Description Input pin for detected phase. Current is input, determining the peaks of focus search, track jump, and sled kick. External resistor to adjust free running frequency of VCO. Regulated output voltage. Output pin of 8.64MHZ VCO. Pin for the operation of the sled runaway prevention circuit at "L". Pin for connecting the DSP. Pin for connecting the DSP. Providing an external LPF time constant of the CLV servo. Digital positive power supply. Inverting input for spindle servo amplifier. Spindle servo error output. Clock input for auto-sequence. Focus OK signal input pin. Mirror signal input pin. Digital negative power supply. Defect signal input pin. Tracking error signal input pin. Input pin for the zero cross tracking comparator. Input pin for detect ATSC. Input pin for focus error signal.
ABSOLUTE MAXIMUM RATINGS
Characteristic Supply Voltage Power Dissipation Operating Temperature Storage Temperature Symbol VCC -VEE PD T OPR T STG Value 12 600 -20 ~ + 75 -55 ~ + 150 Unit V mW °C °C
KA8309B
ELECTRICAL CHARACTERISTICS
SERVO SIGNAL PROCESSOR
(Ta =25°C, VCC =2.5V, VDD =2.5V, VEE = -2.5V, GND = 0V, unless otherwise specified) Characteristic Circuit Current 1 Circuit Current 2 Circuit Current 3 Circuit Current 4 DC Voltage Gain Focus Servo Feed Through Output Voltage 1 Output Voltage 2 Output Voltage 3 Output Voltage 4 Search Output Voltage 1 Search Output Voltage 2 DC Voltage Gain Tracking Servo Feed Through Output Voltage 1 Output Voltage 2 Output Voltage 3 Output Voltage 4 Jump Output Voltage 1 Jump Output Voltage 2 DC Voltage Gain Output Voltage 1 SIed Servo Output Voltage 2 Output Voltage 3 Output Voltage 4 Feed Through Kick Output Voltage 1 Kick Output Voltage 2 No. 1 2 3 4 5 6 7 8 9 10 Symbol ICC1 ICC2 ICC3 ICC4 GV (DC) 1 GV (FF) VO (FCS) 1 VO (FCS) 2 VO (FCS) 3 VO (FCS) 4 SG48 = 10Hz, 200mVP-P SG48 = 10KHz, 40mVP-P Gain difference between 08 and 00 of SD V2 = 0.5V V2 = 0.5V V2 = 0.5V V2 = 0.5V -0.63 0.39 SG45 = 10HZ, 500mVP-P SG =10KHz, 500mVP-P Gain difference between 25 and 20 of SD V8 = -1.5V V8 =+1.5V V8 =-1.5V V8 =+1.5V -0.62 0.41 SG3 =10Hz, 100mVP-P V7 = 0.4V V7 = -0.4V V7 = 0.4V V7 = -0.4V SG = 10KHz, 200mV Gain difference between 25 and 20 of SD 0.44 -0.7 0.6 -0.6 1.16 -1.16 -32 0.7 -0.43 20.6 1.96 -1.96 -0.55 0.55 22.5 1.15 -1.16 -0.40 0.62 24.4 1.96 -1.96 12.9 -0.55 0.55 14.6 1.16 -1.16 -0.37 0.65 17.8 -37 1.96 -1.96 Test Conditions Min 2 7 -2 -6 18.3 Typ 6 10 -7 -9 21 Max 10 20 -13 -19 23.6 -30 Unit mA mA mA mA dB dB V V V V V V dB dB V V V V V V dB V V V V dB V V
11 VO(SEARCH)1 12 VO(SEARCH)2 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 GV (DC) 2 GV (TF) VO (TCK) 1 VO (TCK) 2 VO (TCK) 3 VO (TCK) 4 VO (JUMP) 1 VO (JUMP) 2 GV (DC) 3 VO (SLD) 1 VO (SLD) 2 VO (SLD) 3 VO (SLD) 4 GV (SF) VO (KICK) 1 VO (KICK) 2
KA8309B
ELECTRICAL CHARACTERISTICS (Continued)
Characteristic Spindle Servo Spindle Servo Gain Output Voltage 1 Output Voltage 2 Output Voltage 3 Output Voltage 4 PLL Regulator Output Voltage Self-running Frequency PLL Frequency Deviation 1 Frequency Deviation 2 Sens Low Level Output Low Level FZC Threshold Voltage ATSC Threshold Voltage ATSC Threshold Voltage TZC Threshold Voltage SSTOP Threshold Voltage No 29 30 31 32 33 34 35 36 37 38 39 40 Symbol GV (SPD) VO (SPD) 1 VO (SPD) 2 VO (SPD) 3 VO (SPD) 4 VREG FVCO F1 F2 VSENSE VOL VTH (FZC) V5 =2.5V
SERVO SIGNAL PROCESSOR
Test Conditions SG =10Hz, 200mVP-P V6 =1 .0V V6 =-1 .0V V6 =1 .0V V6 =-1 .0V
Min 14.7 1.76
Typ 16.5
Max 18.4 -1.76
Unit dB V V V V V MHz % % V V mV mV mV mV mV
1.11 -1.11 3.28 7.7 8.0 -14 3.5 8.6 11 -11 3.67 11.3 14 -8.5 -1.96 -1.96 35 -47 5 -22 -70 50 -26 26 0 -50 105 -5 47 22 -30
Frequency deviation from FVCO, V5 =148mV V5 = -148mV SG46 = 10KHz, 2VP-P V2 = Valriable, VP18 = 1.1V V4 = Valriable, VP18 = 1.1V V4 = Valriable, VP18 = 1.1V V3 = Valriable, VP18 = 1.1V V1 = Valriable, VP18 = 1.1V
41 VTH (ATSC) 1 42 VTH (ATSC) 2 43 44 VTH (TZC) VTH (SSTOP)
KA8309B
TEST CIRCUIT
SERVO SIGNAL PROCESSOR
AVCC +2.5V SG34 AVEE -2.5V
+
2 S6 S18 1 1 2
·22 µF
DVCC +2.5V
S5 V5 240K 2.7K A CLK
DVEE -2.5V
+ A26
DGND -2.5V
AGND 0V
36 FSW
35 MON
34 MDP
33 LOCK
32 864M
31 3.5V
30 FVC
29 ISET
28 DPI
27 BPF
26 DGND
25 SCLK
+ A -
A37
XLT
37 38
DVCC SPDLI SPDLO WDCK FOK MRR DVEE DFT TKE TZC ATS FCE HFGD AVCC FSEO TKEO FSCH FSEI RTG LFR CV TG FS
SLOAD SDATA REST DRCT CNO
24
DATA
23 22 21 20 19 18
510K S20 1 2
13K 0.14K
1
100K
39
2 1 SG40
40
S21
2 3 2 1
41
S17
42 43 44
KA8309B
AVEE SENS FSET STOP SLEI SLEO SLEN TKEI
+
A19 A
10K
+ A A43
17
103 1 2 5K V1 2 0.14K 1 13K
V8 SG45
2
S16
45 46
16 15
S12
1 V3 1 2 SG46 1 V4 2 S14 S13 60K S9
47 48
14 13
1 SG13 V7 S19 2
1
2
3
4
5
100K
6
1
7
8
9
10
11
100K
12
S15 1 2 V2 SG48 3 S1 S2 102 1 13K
200K 2 S3 2 0.14K
S10
200K S4
S11
A10 A 1 13K 2 0.14K
+
KA8309B
TEST METHODE (SWITCH CONDITIONS)
SERVO SIGNAL PROCESSOR
SWITCH Conditions No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 Symbol ICC1 ICC2 ICC3 ICC4 GV (DC) GV (FF) VO (FCS) 1 VO (FCS) 2 VO (FCS) 3 VO (FCS) 4 VO (SEARCH) 1 VO (SEARCH) 2 GV (DC)1 GV (TF) VO (TCK) 1 VO (TCK) 2 VO (TCK) 3 VO (TCK) 4 VO (JUMP)1 VO (JUMP)2 GV (DC) 3 VO (SLD) 1 VO (SLD) 2 VO (SLD) 3 VO (SLD) 4 GV (SF) VO (KICK) 1 VO (KICK) 2 GV (SPD) GV (SPD) 1 GV (SPD) 2 GV (SPD) 3 GV (SPD) 4 VRFG FVCO F1 F2 VSENSE VOL VTH (FZC) VTH (ATSC) 1 VTH (ATSC) 2 VTH (TZC) VTH (SSTOP) S1 OFF OFF OFF OFF OFF ON OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF S2 OFF OFF OFF OFF OFF ON OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF S3 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 S4 OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF
S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S18 S19 S20 S21 S22 S23
I SD 00 00 00 00 08
Input Point
Test Point 10 37 19 20
OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 1 2 2 1 1
1 1 1 1 3 3 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 3 3 3 3 1 1 1 3 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1
3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 1 3 1 1 1 3
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
48 48
5 5 5 5 5 5 5 5
08 08 08 08 03 03 25 25 25 25 25 25 20 28 20 25 25 25 25 20 22 23
48 48 48 48
45 45 45 45 45 45
11 11 11 11 11 11 11 11
13 13 13 13 13 13
14 14 14 14 14 14 14 14
34 34 34 34 34
39 39 39 39 39 31 32 32 32 18 20
00 10 10 20 30
48 47 47 46 16
18 18 18 18 18
KA8309B
APPLICATION INFORMATION
CPU Serial Interface Timing Chart
SERVO SIGNAL PROCESSOR
DATA
D0
D1
D2
D3
D4
D5
D6
D7
twck twck
tSU tH
CLK 1/fck XLT tO
tWK
Fig. 3
DVCC - DGND = 4.5 to 5.5V Item Clock Frequency Clock Pulse Width Hold Time Setup Time Delay Time Latch Pulse Width Symbol fCK fWCK tSU tH tD tW 500 500 500 500 1000 Min Typ Max 1 Unit MHz ns ns ns ns ns
KA8309B
SYSTEM CONTROL Item
D7 Focus Control Tracking Control Tracking Mode Select Auto sequence 4 Blind(A,E)/Overflow(C) Brake(B) Kick(D) Track Jump(N) Track Move(M) 0 0 1 1 1 1 1 0 0 0 0 0 0 0 Address D6 D5 0 0 0 0 1 1 0 0 1 1 0 0
SERVO SIGNAL PROCESSOR
Data D4 0 1 0 1 1 0 D3 D2 D1 FS2 Search On TG2 D0 FS4 FS3 Focus Gain On Down Anti Brake Shock On Tracking Mode 2 PS4 PS3 Focus Focus Search + 2 Search + 1 AS3 AS2 0.18ms 0.36ms 11.6ms 64 128 0.09ms 0.18ms 5.8ms 32 64 FS1 Search Up TG1 Gain set 1 Sled Mode 3 PS2 PS1 Sled Sled Kick + 2 Kick + 1 AS1 AS0 0.045ms 0.09ms 2.9ms 16 32 0.022ms 0.045ms 1.45ms 8 16
Sens Output FZC
A.S TZC SSTOP
Busy
Hi-Z
Note: 1. GAIN SET It is possible to set TG1 and TG2 independently. When the anti-shock is 1 (00011xxx), invert both TG1 and TG2 when the internal anti-shock is H.
2 TRACKING MODE D3 OFF ON FWD JUMP REV JUMP 0 0 1 1 D2 0 1 0 1
3 SLED MODE D1 OFF ON FWD MOVE REV MOVE 0 0 1 1 D0 0 1 0 1
4 AUTO SEZUENCE AS3 CANCEL FOCUS ON 1 TRACK JUMP 10 TRACK JUMP 2N TRACK JUMP M TRACK MOVE XX = 0 FORWARD X = 1 REVERSE 0 0 1 1 1 1 AS2 0 1 0 0 1 1 AS1 0 1 0 1 0 1 AS0 0 1 X X X X
· When CANCEL $40 is sent, the status immediately preceding the auto sequence mode (just before $4X is sent) is reset. · The auto sequence mode starts with the first falling of the pin 40 input pulse (WDCK) after the $4X transfer and the falling of latch pulse. 5 RAM SET · Values $0 to $E (not $F) can be set. · The above set values are ones when WDCK (88.2KHz) is input to pin 40. · The RAM is preset when the power is switched on and the internal initial/set values are as follows:
KA8309B
Address 0 0 0 1 1 1 0 1 1 1 0 1 0 0 1 Data 1 1 1 0 1 1 1 1 0
SERVO SIGNAL PROCESSOR
· The actual count values are slightly different from the set values. A set value + 4 to 5 WDCK B, D, E set value + 3 WDCK C set value + 5 WDCK N, M set vlaue + 3 Count out
SERIAL DATA TRUTH TABLE
Serial Data FOCUS CONTROL 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 $00 $01 $02 $03 $04 $05 $06 $07 $08 $09 $0A $0B $0C $0D $0E $0F Hexa Function FS = 4321 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 AS=0 TG=2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 $10 $11 $12 $13 $14 $15 $16 $17 $18 $19 $1A $1B $1C $1D $1E $1F 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 AS=1 1 TG=2 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
TRACKING CONTROL
KA8309B
Serial Data TRACKING MODE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 $20 $21 $22 $23 $24 $25 $26 $27 $28 $29 $2A $2B $2C $2D $2E $2F Hexa.
SERVO SIGNAL PROCESSOR
Function DIRC = 1 TM =6 5 4 3 2 1 000000 000010 010000 100000 000001 000011 010001 100001 000100 000110 010100 100100 001000 001010 011000 101000 DIRC = 0 654321 001000 001010 011000 101000 000100 000110 010100 100100 001000 001010 011000 101000 000100 000110 010100 100100 DIRC = 1 654321 000011 000011 100001 100001 000011 000011 100001 100001 000011 000011 100001 100001 000011 000011 100001 100001
KA8309B
APPLICATION CIRCUIT 1. ±5V SPLIT POWER SUPPLY
SERVO SIGNAL PROCESSOR
SPINDLE MOTOR
M
VR
FE
TE From RF Amp (KA9201) FROM DSP 200
2.2K
22K
+
0.0047µ 0.0047µ 100K 10K 2200p
+
48 FCE
47 ATS
46 TZC
45 TKE
44 DFT
43 DVEE
42 MRR
41 FOK
40 WDCK
39 SPDLO
38 SPDLI
37 DVCC
0.033 µ 1M
1 2
0.1 µ
CV HFGD FS LFR FSEO FSEI FSCH RTG TG AVCC TKEO
FSW 36 MON 35 MDP 34 LOCK 33
+
0.47µ 50V
3
0.033µ
4 5
M
100K
FROM DSP
864M 32
1000p
to DSP
6
100K
FOCUS COIL
KA8309B
3.5V 31 FVC 30 ISET 29
120K 1.8K 2K
4.7µ 6V
+
7 8
+
22µ 6.3V
0.1 µ
9 10 11
M
DPI 28 BPF 27 DGND 26 SLOAD SDATA DRCT STOP SENS SLEO AVEE REST SLEN FSET SCLK 25 +
10K
0.4µ 6.3V 100K
TRACKING COIL
13
82K 22µ
14
120K
15
16
17
0.01µ 510K
18
19
20
CNO
SLEI
12
TKEI
21
22
23
24
+
+
3.3 µ 0.015µ
+
8.2K
TO MICROCOMPUTER
15K
SLED MOTOR
100K
LIMIT SW
FROM MICROCOMPUTER
M
-5
0
+5
Fig . 4
KA8309B
2. +5V SINGLE POWER SUPPLY
FROM DSP SMON VCOO VCOI SMEF SMPD SMSD LOCK
SERVO SIGNAL PROCESSOR
VR to DSP +5V 22µ 100K 10K 4.7µ
0.47µ
1M
+
2K
0V
100K
20K
1000p
+
36 FSW
35 MON
34 MDP
33 LOCK
32 864M
31 3.5V
30 FVC
1.8K
0.03µ
29 ISET
200K
28 DPI
27 BPF
26 DGND
25 SCLK
+
FROM MICROCOMPUTER
37 38
DVCC SPDLI SPDLO WDCK FOK MRR DVEE DFT TKE TZC ATS FCE HFGD AVCC FSEO TKEO FSCH FSEI RTG LFR CV TG FS
SLOAD SDATA REST DRCT CNO
24 23 22 21 20 19 18
510K TO MICROCOMPUTER
100K 39
FROM DSP WDCK FOK
40 41 42 43
MRR From RF Amp
KA8309B
AVEE SENS FSET STOP SLEI SLEO SLEN TKEI
DFT
44 45
0.0047
17 16 15
0.015 0.01µ 82K LIMIT SW
22K TE 22K 0.0047 22K FE 10K 22K
46 47 48
14
120K
13 +
+
3.3µ 22µ 15K
1
2
3
4
0.013
5
6
7
4.7µ
8
9
10 +
11
12
VR
+
100K 0.1
+
0.1
100K
82K
30K
33K 33K 30K 35K 30K 10P 35K 35K 10P
KA9257
1
2
3
4
5
6
7
8
9
10 11 12
12 11 10
9
8
7
6
5
4
3
2
1
+ VCC2
FOCUS COIL
33µ
M
SPINDLE MOTOR TRACKING COIL
M
VCC2
SLED MOTOR
Fig. 5