SCD-XE670 - Sony Audio Service Manual (repair manual). Page 67

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67
SCD-XE670
Pin No.
Pin Name
I/O
Description
51
LD ON
O
Laser diode on/off control signal output to the CXD1881R (IC001)
“L”: laser diode off, “H”: laser diode on
52
XDIS IO
O
Reset signal output to the I/O expander (IC902)    “L”: reset
53
SDOUT
O
Serial data output to the MSM9202 (IC801)
54
SLK
O
Serial data transfer clock signal output to the MSM9202 (IC801)
55
VSS
Ground terminal (digital system)
56
REQ
O
Request signal output to the MSM9202 (IC801)
57
FCS BST
O
Focus boost signal output terminal    Not used (open)
58
GFS DVD
I
Guard frame sync signal input from the CXD1882R (IC701)
59
LED DRV
O
LED drive signal output of the multi-channel indicator (D803)    “H”: LED on
60
KEY 0
I
Key input terminal (A/D input)    S807 to S809 (H, X, x) keys input
61
KEY 1
I
Key input terminal (A/D input)
S801 to S805 (m, M, MENU, SACD/CD, MILTI/2CH) keys input
62
KEY 2
I
Key input terminal (A/D input)    S810 to S814, S830 (TIME/TEXT, PLAY MODE, CHECK, 
CLEAR, REPEAT, PUSH ENTER) keys input
63
KEY 3
I
Key input terminal (A/D input)    S806 (OPEN/CLOSE A) key input
64
JITTER
I
Jitter signal input
65
TE
I
Tracking error signal input from the CXD1881R (IC001)
66
SP ERR
I
Spindle motor backward voltage input terminal
67
FE/PI
I
Focus error signal input from the CXD1881R (IC001)
68
AVSS
Ground terminal (for A/D converter)
69
AVREF
I
Reference voltage input terminal (for A/D converter)
70
AVDD
Power supply terminal (+3.3V) (for A/D converter)
71
GFS CD
I
Guard frame sync signal input from the CXD3068Q (IC509)
72
SCLK CD
O
SENSE serial data reading clock signal output to the CXD3068Q (IC509)
73
1/2 LD
Not used (open)
74
FOK CD
I
Focus OK signal input from the CXD3068Q (IC509)
75
LOCK CD
I
GFS is sampled by 460 Hz    “H” input when GFS is “H”
76
XRF AD CE
O
Chip enable signal output to the A/D converter    Not used (open)
77
SDCLK RF
O
Serial data transfer clock signal output to the CXD1881R (IC001)
78
EEPSIO
I/O
Two-way data bus with the EEPROM (IC903)
79
EEPSCL
O
Clock signal output to the EEPROM (IC903)
80
RXD
I
Serial data input from the RS-232C (for check)
81
TXD
O
Serial data output to the RS-232C (for check)
82
RM
I
Remote control signal input from the remote control receiver (IC802)
83
SDATA RF
I/O
Two-way data bus with the CXD1881R (IC001)
84
XWR
O
Write strobe signal output to the CXD1882R (IC701) and I/O expander (IC902)
85
XRD
O
Read strobe signal output to the CXD1882R (IC701) and I/O expander (IC902)
86
NC
Not used (fixed at “H” )
87
VDD
Power supply terminal (+3.3V)  (digital system)
88
VSS
Ground terminal (digital system)
89 to 91
A0 to A2
O
Address signal output to the CXD1882R (IC701) and I/O expander (IC902)
92 to 96
A3 to A7
O
Address signal output to the CXD1882R (IC701)
97
INIT DF
O
Initial signal output to the digital filter    Not used
98
LATCH DF
O
Latch signal output to the digital filter (IC301 to IC303)
99
SHIFT DF
O
Shift signal output to the digital filter (IC301 to IC303)
100
SCDATA DF
O
Serial data output to the digital filter (IC301 to IC303)
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