Sony CFD-G555CP Service Manual page 45

• IC PIN FUNCTION DESCRIPTION
CD/MP3 BOARD IC1001 LC78684E-US-E (MP3 DECODER, CD-ROM DECODER, ANTI-SHOCK CONTROLLER)
Pin No. Pin Name
1 LRSY (I)
2 ADDATA (O)
3 ADBCK (O)
4 ADLRCK (O)
5 C2F IN (I)
6 VSS
7 CKIN (I)
8 VSS
9 CKOUT (O)
10 VSS
11 DVDD1
12 PW (I)
13 SBSY (I)
14 SFSY (I)
15 SBCK (O)
16 AVDD
17 VPRFR
18 VCOC
19 VPDO
20 AVSS
21 DVDD2
22 VSS
23 to 30 MDATA0 to 7
31 DVDD3
32 VSS
33 to 40 MDATA8 to 15
41 RASB
42 WEB
43 CASLB
44 CASUB
45 OEB
46 to 49 MADRS12 to 9
50 MADRS8
51 DVDD4
52 VSS
53 to 60 MADRS7 to 0
61 DVDD5
62 VSS
63 STREQIO (O)
64 STCKIO (O)
65 STDATIO (O)
66 FSYNC (O)
67 CRCF (O)
68 DVDD6
69 VSS
I/O
I CD L/R clock input
O Audio data output
O Audio bit clock output
O Audio L/R clock output
I CD C2 error flag input
— Ground
I System clock (16.9344 MHz) input
— Ground
O Clock (384Fs) output for external DF/DAC.
— Ground
— Digital power supply (+3.3V)
I CD subcode data serial input (connected to +3.3V)
I CD subcode block synchronized signal input (connected to +3.3V)
I CD subcode frame synchronized signal input (connected to +3.3V)
O Serial clock output for CD subcode transfer. (not used)
— Analog (PLL) power supply (+3.3V)
— VCO oscillation range setting pin (connected to +3.3V)
I VCO control voltage input
O VCO charge pump output
— Analog ground
— Power supply (+1.8V)
— Ground
I/O DRAM data bus 0 to 7
— Digital power (+3.3V)
— Ground
I/O DRAM data bus 8 to 15
O Row Address Strobe signal output (L: active)
O Data Write Enable signal output (L: active)
O Column Address Strobe signal output (for lower byte, L: active)
O Column Address Strobe signal output (for upper byte, L: active)
O Output enable signal output (L: active)
O DRAM address output 12 to 9 (not used)
O DRAM address output 8
— Digital power supply (+3.3V)
— Ground
O DRAM address output 7 to 0
— Power supply (+1.8V)
— Ground
MP3 data request flag output (H: active)/DRAM data request flag input (H: active)
I/O
(not used)
I/O MP3 data transfer clock input/DRAM data transfer clock output (not used)
I/O MP3 data serial input/DRAM data serial output (not used)
O MP3 frame synchronized signal input (H: active) (not used)
CDROM-CRC flag output (H: active)/DRAM data output enable signal output
O
(H: active) (not used)
— Power supply (+3.3V)
— Ground
CFD-G555CP/G555CPK
Description
45