35
ZS-X3CP
5-16. IC PIN FUNCTION DESCRIPTION
• CDMP3 BOARD IC703 LC78683E-US-E (MP3 DECODER, CD-ROM DECODER, ANTI-SHOCK CONTROLLER)
Pin No. Pin Name I/O Description
1 LRSY I
CD decode L/R sampling clock signal (44.1 kHz) input
2 ADDATA O
Audio data output
3 ADBCK O
Audio bit clock signal (2.8224 MHz) output
4 ADLRCK O
Audio L/R sampling clock signal (44.1 kHz) output
5 C2FIN I
CD C2 error flag input
6 TEST1 I
Not used
7 CKIN I
System clock signal input (16.9344 MHz) terminal
8 VSS —
Ground terminal
9CKOUT O
Clock (384 Fs) signal output for the exteranak DF/DAC
10 TEST2 I
Not used
11 DVDD1 —
Power supply terminal (+3.2V) (digital system) (for I/O)
12 PW I
CD subcode data serial input
13 SBSY I
CD subcode block sync signal input
14 SFSY I
CD subcode frame sync signal input
15 SBCK O
CD subcode transfer serial clock signal output
16 AVDD —
Power supply terminal (+3.2V) (analog system) (for PLL)
17 VPRFR —
VCO oscillation range setting terminal
18 VCOC I
VCO control voltage input
19 VPDO O
VCO charge pump output
20 AVSS —
Ground terminal (analog system)
21 DVDD2 —
Power supply terminal (+3.2V) (digital system)
22 VSS —
Ground terminal
23 to 30
MDATA0 to
MDATA7
I/O
Two-way data bus terminal for D-RAM
31 DVDD3 —
Power supply terminal (+3.2V) (digital system) (for I/O)
32 VSS —
Ground terminal
33 to 40
MDATA8 to
MDATA15
I/O
Two-way data bus terminal for D-RAM
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
MADRAS9
O
Address signal output terminal for D-RAM Not used
50
MADRAS8
O
Address signal output terminal for D-RAM
51 DVDD4 —
Power supply terminal (+3.2V) (digital system) (for I/O)
52 VSS —
Ground terminal
53 to 60
MADRS7 to
MADRS0
O
Address signal output terminal for D-RAM
61 DVDD5 —
Power supply terminal (+3.2V) (digital system) (for the internal logic)
62 VSS —
Ground terminal
63 STREQIO I/O
MP3 data request flag input/output
64 STCKIO I/O
MP3 data transfer clock signal input/output
65 STDATIO I/O
MP3 data input/output
66 FSYNC O
MP3 frame synchronizing signal output