Sony CFD-G555CP - Page 45

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