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5 4 3 2 1




THORIUM REV-A2B2 ES6820/22/26 + DV342/502W/DL3F/KHM310 + OUTPUT
Layout----THORIUM-A2B2



D D

Background Revision History
This DVD design is based on ESS ES6820/22/26 single chip DVD mpeg and servo processor. The ES6820/22/26 is Rev-A1
built upon ESS proven Programmable Multimedia Processor architecture with integrated servo DSP. A complete DVD Base on SMITH-A2B2'S design
design using ES6603 RF-Amp can support all major popular optical pickup heads. With ES68xx unify memory
architecture, the whole system memory is reduced to a minimum. ES6820/22/26 provides the best price performance Rev-A2
DVD solution in the industry and include the latest MPEG4/DivX playback capability. 1.Add R202,R203,R204,R205 for B,D swap option.
[email protected] 2.Add pull low resistor R206 to AMPSTBY.
3.Delete the connection from CE to FOCUS;delete the connection from RFENV to SLED.
System Clock Requirement 4.Change R59,R62,Q7,Q8,Q9 to open;change R60 to 0 ohm.
ES6820/22/26 require a 27MHz clock to operate. This 27MHz can either be generated externally and feed into pin 193 5.Revise the pickup configure table,add R43,R51,RR6,RR8 option,only 502W is confirmed.
and pin 195 or thru a 27MHz crystal attached to pin 193 and 194. This 27Mhz will be used for all video processing 6.Change R201 to open;add a pull low resistor option to HOMESW.
reference. In addition, internal multiplier will generate a much higher operating frequency for the internal RISC+DSP 7.Change R77 to 6.8K.
code to operate. Audio clock is generated from ES6820/22/26 by its internal PLL circuitry.
8.Modify the two channel circuit(add 74HCT174),modify the filter parameter.
9.Change DV342 to default pickup.
SDRAM Usage 10.Change R63 from 33K to 56K;short D9;R206 from 4.7K to 3.3K.
ES6820/22/26 supports different SDRAM configuration from 1Mx16, 4Mx16 to 8Mx16 SDRAM. The basic requirement
can go as low to 2 pcs of 1Mx16 SDRAM with standard feature set. You can also make use of 8Mx16 SDRAM to achieve 11.Change R45 and R46 from 4.7K to open.
longer ESP antishock time for portable application. 12.Change C3,C4 from 27pf to 22pf.
13.Change U24 to 74ACT174.
C C
System Configuration Rev-A3
CHIP FUNCTION 1.Short and delete D9.
ES6820/22/26 Single chip processor that handles all system control, DVD decoding and servo control. 2.Delete R200.
32/64MBit SDRAM Data storage and frame buffer using either 1 pc of 4Mx16 SDRAM or 2 pcs of 1Mx16 SDRAM 3.Change driver from AM5869S to AM5888S.
4/8Mbit EPROM/FLASH Program storage using either 4Mbit Flash or 8Mbit Flash 4.Move C223 to C140,move C224 to C150,move C225 to C160,move C226 to C168.
24C01 SERIAL EE System setup configuration storage 5.Change C216,C217,C159,C167 to NPO type capacitor.
6.Change R77 from 6.8K to 9.1K.
Rev-A4
1.Add test port
2.Place output socket
3.WM8766.17pin & WM8766.28pin change 3.3v to A5V of power
Rev-A5
LCSx# FUNCTION 1.Change C62,C66 to 10NF,C60,C61 to 33NF,R45,R46 to 15K.
LCS0# SPARE
LCS1# I/O expand
LCS2# SPARE
LCS3# ROM/FLASH
B B




AUXx FUNCTION AUXxx FUNCTION
AUX0 I2C DATA
12 RXD1
AUX1 I2C CLOCK
13 TXD1
AUX2 VFD DATA
16 HSYNC
AUX3 AUDIO BUFFER CONTROL
17 VSYNC
AUX4 IR/SPARE
30 SPARE
AUX5 AMP_PWR/DFCT
31 SPARE
AUX6 VFD CS#
32 SPARE/VFDCLK
AUX7 VFD CLK/IR
33 SPARE
34 SPARE
35 SPARE
EAUXxx FUNCTION 36 SPARE
37 SPARE
00 SCARTCTL0
01 SCARTCTL1
02 GND
03 SCARTCTL2
A A




ESS TECHNOLOGY, INC.
Title
INDEX

Size Document Number Rev
THORIUM A2

Date: Tuesday, July 19, 2005 Sheet 1 of 5
5 4 3 2 1
A B C D E
VCC
VCC
U1 VD33 VA5 VCC
1 VCC +12VA U7 L39
NC L1 FB
2 LM78L05 TO92 OPEN(FB)
GND R131 AVD33 VDD VD33 VCC33 R33 33/0.5W
NC 3 3 VIN OUT 1
4 MRST# C182 1K(OPEN)
RES MRST#
5 1UF(OPEN) C199 C1 C197 C198




GND
VDD 100UF/10V C2 VDD VD33 C221
OPEN(V6300) MRST# 0.1UF 10UF/25v 0.1UF 100UF/16V
Package: SOT-23 5L R132 AGND GND 100UF/16V




3
EM-MARIN 100 OHM(OPEN) R3 100K




2
GND
1 Q27 C193 GND VDD GNDA GNDA
RESET IC 2N3904(OPEN) 0.1UF Y1 27M AGND GND GNDA




1
L2 FB VD33 VCC33 VCC33 VCC33
VD33 VD33 D15 DVCC




2
GNDA
4.7K R122 IN4148(OPEN) C3 C4




4.7K
10K(OPEN) GND GND 22PF 22PF C5 C6
VCC R7 R4 R5 R6 VD33
4 4
VCC33 0.1UF 10UF/25v 4.7K 4.7K 4.7K 4.7K U11
U2
R1




R2
HS/RGB_S R35 4.7K 74ACT174




16
GND GND




1
1 8 REFD VS/CV/YC R92 4.7K
S0 _VCC HOMESW EAUX36 R124 4.7K PWM_R-
2 7 GND 3 2




VCC
CLR
S1 WC AUX1 XOUT1 OPENSW HOMESW EAUX37 PWM_R+ D1 Q1 PWM_R-1
3 6 C7 C17 R9 33 OHM R207 33 OHM GND C8 R130 4.7K 4 5
S2 SCL CLOSESW OPENSW AUX31 D2 Q2 PWM_R+1
4 5 AUX0 R29 R38 C9 R195 4.7K 6 7
GND SDA MDET CLOSESW AUX33 PWM_L- D3 Q3
47UF 0.1UF JP7 10UF/25v 0.1UF R196 4.7K 11 10
VCC MDET AUX34 PWM_L+ D4 Q4 PWM_L-1
330 1K R197 4.7K 13 12
AT24C01A-10TC-2.7 7 GND EAUX03 D5 Q5 PWM_L+1
GND GND R11 4.7K 14 15




XOUT
GAMECLK 6 EAUX01 D6 Q6




VS/CV/YC
GAMECLK R12 4.7K




HS/RGB_S




CLOSESW

AMPSTBY
5




OPENSW

HOMESW
GAMELATCH GAMELATCH AGND EAUX02 EAUX00 R75 4.7K XOUT1 9




GND
4




CLOSE
GAMEDATA1 GAMEDATA1 AUX5 CLK




AUX7



OPEN
R80 4.7K




SLO
FOO
TRO
RPBC


DMO
AUX2
AUX6
AUX4




AUX33
AUX31
AUX34
GAMEDATA2 3 GAMEDATA2 AUX5




INB
2




IN
Q24 GUN_SW2 C10 EAUX03 R14 33 OHM
1 STANDBY
2




2
2N3906




8
0.1UF GND
EAUX00 1 1 Q25 HEADER 7




CPUCLK




EAUX02
EAUX03
EAUX00
EAUX36
EAUX01
EAUX37




AGND
DMO
FOO
TRO
DMA0 MMA0 2N3906




SLO
AVD33
AGND
DVCC




REFD
MDET
AUX5




VD33




VD33
GND




VDD
DMA1 MMA1




GND




GND




GND
GND




XIN
DMA2 MMA2
3




3
GND
DMA3 MMA3 AUX31 GAMEDATA1 GND
AUX33 GAMEDATA2




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195
194
193
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