Read Sony CMT-SD1 / CMT-SD3 / HCD-SD1 Service Manual online
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7-19. IC PIN FUNCTIONS
• IC701 System Control (
µ
PD780018AYGF-015-3BA) (MAIN Board)
1
BD POWER
O
CD power control pin, “H”:CD POWER ON
2
PANEL SW
I
Front cover open/close switch, “H”:Open glass door, “L”:Close glass door
3 to 7
–
I
Not used
8
AC.CUT
I
AC power connection signal, “L”:Power is disconnected
9
VPP
–
Normally connected to the ground pin
10
X2
O
Main system clock output pin (5 MHz)
11
X1
I
Main system clock input pin (5 MHz)
12
VDD1
–
Positive power supply (+5V)
13
XT2
O
Sub system clock output pin (32 kHz)
14
XT1
I
Sub system clock output pin (32 kHz)
15
RESET
I
System reset input pin, “L”:RESET
16, 17
–
I
Not used
18
ENCODER A
I
Encoder input pin for jogging
19
ENCODER B
I
Encoder input pin for jogging
20
RDSCLK
I
RDS clock input pin (Not used)
21
RDSDAT
I
RDS data input pin (Not used)
22
SCOR
I
SCOR input pin
23
VDD0
–
Positive power supply of port (+5V)
24
ADREF
–
Reference voltage of A/D converter (+5V)
25
KEY1
I
Key input pin (Analog input)
26
KEY0
I
Key input pin (Analog input)
27 to 30
–
I
Not used
31
HP-SW
I
Headphone detection SW, “L”:No HP, “H”:HP
32
–
I
Not used
33
AVSS
–
A/D converter ground potential
34
–
I
Not used
35
FL.DAT
O
Serial data output for FL tube control IC (MSM9202-02)
36
FL.CLK
O
Serial clock output for FL tube control IC (MSM9202-02)
37
FL.LAT
O
Chip select output for FL tube control IC (MSM9202-02)
38
FL.RST
O
Reset signal output for FL tube control IC (MSM9202-02)
39
–
I
Not used
40
VSS1
–
Ground potential other than port and analog
41, 42
–
I
Not used
43
SQSI
I
CD sub code data input
44
–
I
Not used
45
SQCK
O
Clock output for reading CD sub code
46 to 48
–
I
Not used
49
IN-SW
I
CD tray close completion detection input, “L”:CLOSE
50
OUT-SW
I
CD tray open completion detection input, “L”:OPEN
51
HELP
I
Pin requesting power ON from the PC link adapter (optional), Normally “H”
52
FSW
O
Focus gain switch
53
SENSE
I
SENSE input pin
54
–
I
Not used
55
IIC DAT
I/O
System control communication data input/output pin
56
IIC CLOCK
I/O
System control communication clock input/output pin
57
CD-CLK
O
Serial clock for CD control
58
CD-DATA
O
Serial data for CD control
59
DF-LAT
O
Chip select signal for DA/DF
60
DSP-LAT
O
DSP IC and SSP IC chip select
Pin No.
Pin Name
I/O
Function
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