![background image](http://html.mh-extra.com/html/sony/hcd-v8900/hcd-v8900_service-manual_420894073.webp)
– 109 –
Connected to ground
Connected to ground
X’ tall (5MHz)
X’ tall (5MHz)
Power 5V
Not used
Connected to +5V
System reset input
Not used (Fixed at “L”)
CD-BUS interrupt input
Not used (Fixed at “L”)
Power 5V
Power 5V
Connected to ground
Ground
Input/output terminal exchanging data bus 0 with mecha-con, (IC701/VIDEO board)
Input/output terminal exchanging data bus 1 with mecha-con, (IC701/VIDEO board)
Input/output terminal exchanging data bus 2 with mecha-con, (IC701/VIDEO board)
Input/output terminal exchanging data bus 3 with mecha-con, (IC701/VIDEO board)
Connected to ground
Ground
Connected to ground
Output command request to mecha-con. (IC701/VIDEO board)
Input command acknowledge from mecha-con. (IC701/VIDEO board)
Not used (Fixed at “L”)
Connected to ground
Serial data output (IC271, 301)
Serial clock output (IC271, 301)
Serial latch output to OSD (IC271)
Not used
Not used
Video CD section reset output
Not used
Not used
Serial data input from master control (IC701/MAIN board)
Serial clock input from master control (IC701/MAIN board)
Connected to ground
Not used
Not used
Not used
Chip select output to noise reduction (IC301/VIDEO board)
Connected to ground
Ground
Connected to ground
Connected to ground
Connected to ground
Connected to ground
Connected to ground
1 to 8
9
10
11
12
13
14
15
16, 17
18
19 to 22
23
24
25 to 32
33
34
35
36
37
38, 39
40
41, 42
43
44
45
46
47
48
49
50
51
68
69, 70
71
72, 73
74 to 81
82 to 85
86 to 93
94 to 100
P80 to P87
TEST
X2
X1
VDD
XT2
XT1
RESET
PO0, PO1
QINT
PO3 to PO6
VDD
AVDD
P10 to P17
AVSS
CMD0
CMD1
CMD2
CMD3
P24, P25
VSS
P26, P27
MREQ
SACK
CDGM
P93
MDATA
MCLK
OS-XLAT
G-XLAT
G-XRST
NR-XCS
P54, P55
VSS
P56, P57
P60 to P67
P100 to P103
P30 to P37
P150 to P156
I
–
O
I
–
–
–
I
I
I
I
–
–
I
–
I/O
I/O
I/O
I/O
I
–
I
O
I
I
I
O
O
O
O
O
O
O
O
I
I
I
O
O
O
O
I
I
I
I
I
I
I
• IC901 IIC INTERFACE (uPD780016YGF-020-3BA)/VIDEO board
I/O
Function
Pin No.
Pin Name
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299