Ic Pin Function Description - Sony PMC-222V Service Manual
Personal component system
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Also See for PMC-222V:
- Operating instructions manual (40 pages) ,
- Service manual (8 pages)
Table of Contents
5-11.
IC PIN FUNCTION DESCRIPTION
CONTROL BOARD IC801 MSM65354-408GS-BK4 (SYSTEM CONTROL, LCD DRIVE)
Pin No.
Pin Name
I/O
1 to 4
COM1 to COM4
5 to 36
SEG0 to SEG31
37
A-GND
38 to 41
KEY1 to KEY4
42
9/10
43
VOL-INI
44
VCHK
45
NC (GND)
46
VRH
47
AVDD
48
RCE
49
RDO
50
RDI
51
RCK
52
MCS
53
MDI
54
MDO
55
MSK
56
TA
57
TU
58
CD
59
PCNT
60
XRST
61
CLT
62
CDO
63
CCK
64
NC (OPEN)
65
SQSO
66
SQCK
67
RMC
68
DBB
69
ACKW
70
VDO
71
VCK
72
VDD
73
NC (GND)
74
STID
75
SENS
76
DOP
77
REC
78
PLAY
79
H STOP
80
SCOR
O
LCD common output
O
LCD Segment output
—
Analog ground
I
Key input
I
9k/10k select input
I
Volume initial setting input (Fixed at "L")
I
Input for power check
—
Connected to ground
—
AD reference voltage input
—
Analog power supply (+5V)
O
PLL chip enable output
O
PLL data output
I
PLL data input
O
PLL serial clock
O
EEPROM chip select
I
EEPROM read/wired or to MD
O
EEPROM write/wired or to MD
O
EEPROM R/W clock output
O
Analog SW control
O
Analog SW, power supply control
O
Power supply control
O
Power on/off control output
O
CD/VCD system reset
O
CD DSP command latch
O
CD DSP command data
CD DSP command clock
—
Not used (OPEN)
I
Subcode serial data input
O
Subcode read clock output
I
Remote control signal input
O
DBB on/off control output
I
VDO acknowledgement reading
2
O
I
CBUS serial data output
2
O
I
CBUS serial clock output
—
Digital power supply (+5V)
—
Not used
I
FM stereo indicator control input
I
CD SENS signal input
I
INT-1 input/both edge detect
I
MD Recording switch input
I
MD head position switch input
I
Hard stop mode input
I
CD subcode read enable input
Description
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