Read Sony CMT-EX1 / HCD-EX1 Service Manual online
34
Pin No.
Pin Name
I/O
Function
• IC701 uCOM (UPD780306GF-024-3BA) (MAIN Board (3/3))
1
TUNED
I
ST tuning
2
PLL_CE
O
ST PLL CE
3
PLL_DATAI
I
ST PLL IN data
4
PLL_DATAO
O
ST PLL OUT data
5
PLL_CLK
O
ST PLL CLK
6
GND
–
Ground (Programing)
7
XOUT
–
8
XIN
–
9
VDD1
–
Ground
10
XT1
–
11
XT2
–
12
RESET
I
uCOM reset in
13
REMOTE
I
SIRCS IN
14
RDS_CLK
I
ST RDS clock
15
POWDET
I
AC power down detect
16
SCOR
I
CD SCOR
17
RDS_DATA
I
ST RDS data
18
SENSE
I
CD SENS
19
SUB Q
I
CD SUBQ IN data
20
BACKLIGHT
O
LCD back light
21
SERVO_CK
O
CD SQCK/SCLK (for serial in)
22
XLAT
O
CD data latch
23
XRST
O
CD (BC) reset
24
SCLK
O
CD CLOCK/PCM1710 CLK
25
MUTE_D
O
CD digital mute
26
CD_POWER
O
CD (BD) power
27
AVSS
–
Ground
28
KEYIO_1
I
29
KEYIO_2
I
30
BAND_AREA
I
Destination setting
31
DA_LAT
O
PCM1710 latch
32
LPH
O
CD LPH
33
LDON
O
CD LASER ON
34
OPEN_SW
I
OPEN SW
35
CLOSE_SW
I
CLOSE SW
36
VDD0
–
37
AVREF
–
38
AMP_MUTE
O
POWER AMP MUTE
39
DATA
O
CD CMD/PCM1710 OUT DATA
40
VSS1
–
Ground
41
OPEN
O
CD loading motor open
42
CLOSE
O
CD loading motor close
43
POWER
O
System power
44
TA_MUTE
O
TA MUTE
45
SP_RELAY
O
Speaker relay
46
ST_MUTE
O
ST MUTE
47
SLEEP
O
Power supply sleep control
48
VOL_CLK
O
VOL CLK
49
VOL_DATA
O
VOL OUT data
50
VOL_STB
O
VOL STB
5MHz (Main clock)
32KHz (Sub clock)
KEY
+5V
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