Read Sony ZS-X3CP Service Manual online
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
9
CKOUT
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
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