Sony HCD-V909AV Service Manual page 55

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• IC901 IIC INTERFACE (uPD780016YGF-012-3BA)/VIDEO board
Pin No. Pin Name
P80 to P87
1 to 8
9 TEST
X2
10
X1
11
VDD
12
XT2
13
XT1
14
RESET
15
PO0, PO1
16, 17
QINT
18
PO3 to PO6
19 to 22
VDD
23
AVDD
24
P10 to P17
25 to 32
AVSS
33
34 CMD0
CMD1
35
CMD2
36
CMD3
37
P24, P25
38, 39
VSS
40
P26, P27
41, 42
TE
L 13942296513
MREQ
43
SACK
44
45 CDGM
P93
46
MDATA
47
MCLK
48
OS-XLAT
49
50 G-XLAT
G-XRST
51
CD-XRST
52
CDPOW
53
DOUT
54
IIC-DATA
55
IIC-CLK
56
P40 to P47
57 to 64
NRON
65
66 LEVEL0
LEVEL1
67
NR-XCS
68
P54, P55
69, 70
VSS
71
www
P56, P57
72, 73
P60 to P67
74 to 81
P100 to P103
82 to 85
.
P30 to P37
86 to 93
P150 to P156
94 to 100
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I/O
Connected to ground
I
Connected to ground
–
X' tall (5MHz)
O
X' tall (5MHz)
I
Power supply +5V
–
Not used
–
Connected to +5V
–
System reset input
I
I Not used (Fixed at "L")
CD-BUS interrupt input
I
Not used (Fixed at "L")
I
– Power supply +5V
Power supply +5V
–
Connected to ground
I
Ground
–
Input/output terminal exchanging data bus 0 with mecha-con, (IC901)
I/O
Input/output terminal exchanging data bus 1 with mecha-con, (IC901)
I/O
Input/output terminal exchanging data bus 2 with mecha-con, (IC901)
I/O
Input/output terminal exchanging data bus 3 with mecha-con, (IC901)
I/O
Connected to ground
I
Ground
–
Connected to ground
I
O Output command request to mecha-con. (IC701)
Input command acknowledge from mecha-con. (IC701)
I
Not used (Fixed at "L")
I
Connected to ground
I
Serial data output (IC271, 301)
O
Serial clock output (IC271, 301)
O
Serial latch output to OSD (IC271)
O
Not used
O
Not used
O
O Video CD section reset output
Not used
O
Not used
O
I Serial data input from master control (IC701)
Serial clock input from master control (IC701)
I
Connected to ground
I
Not used
O
Not used
O
Not used
O
Chip select output to noise reduction (IC301)
O
Connected to ground
I
Ground
I
Connected to ground
I
Connected to ground
I
x ao u163
y
I Connected to ground
i
Connected to ground
I
Connected to ground
I
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2 9
8
Function
Q Q
3 6 7 1 3 1 5
co
.
— 93 —
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9