Sony PMC-222V, Service Manual

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5-11. IC PIN FUNCTION DESCRIPTION
CONTROL BOARD IC801 MSM65354-408GS-BK4 (SYSTEM CONTROL, LCD DRIVE)
Pin No.
1 to 4
5 to 36
37
38 to 41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
I/O
O
O
—
I
I
I
I
—
—
—
O
O
I
O
O
I
O
O
O
O
O
O
O
O
O
—
I
O
I
O
I
O
O
—
—
I
I
I
I
I
I
I
Description
LCD common output
LCD Segment output
Analog ground
Key input
9k/10k select input
Volume initial setting input (Fixed at “L”)
Input for power check
Connected to ground
AD reference voltage input
Analog power supply (+5V)
PLL chip enable output
PLL data output
PLL data input
PLL serial clock
EEPROM chip select
EEPROM read/wired or to MD
EEPROM write/wired or to MD
EEPROM R/W clock output
Analog SW control
Analog SW, power supply control
Power supply control
Power on/off control output
CD/VCD system reset
CD DSP command latch
CD DSP command data
CD DSP command clock
Not used (OPEN)
Subcode serial data input
Subcode read clock output
Remote control signal input
DBB on/off control output
VDO acknowledgement reading
I 2 CBUS serial data output
I 2 CBUS serial clock output
Digital power supply (+5V)
Not used
FM stereo indicator control input
CD SENS signal input
INT-1 input/both edge detect
MD Recording switch input
MD head position switch input
Hard stop mode input
CD subcode read enable input
Pin Name
COM1 to COM4
SEG0 to SEG31
A-GND
KEY1 to KEY4
9/10
VOL-INI
VCHK
NC (GND)
VRH
AVDD
RCE
RDO
RDI
RCK
MCS
MDI
MDO
MSK
TA
TU
CD
PCNT
XRST
CLT
CDO
CCK
NC (OPEN)
SQSO
SQCK
RMC
DBB
ACKW
VDO
VCK
VDD
NC (GND)
STID
SENS
DOP
REC
PLAY
H STOP
SCOR