Read Sharp CD-BA1200 (serv.man10) Service Manual online
CD-BA1200H
– 44 –
IC701 RH-iX0337AWZZ: System Microcomputer (IX0337AW) (1/2)
Port Name
Terminal Name
Pin No.
Input/Output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Function
1
VDD
VDD
—
(+) POWER SUPPLY
2
P37
—
—
GND
3*
P36
S-BUSY
Output
COMMUNICATE TO MPEG MICROCOMPUTER
4
P35
T–BIAS
Output
TAPE RECORD BIAS
5
P34
T–T1/T2
Output
TAPE T1/T2 CHANGE
6
P33
REC/PLAY
Output
TAPE REC/PLAY CHANGE
7
P32
RES OUT
Output
CD DSP RESET & MPEG MICROCOMPUTER RESET
8
P31
DRF
Input
CD RF LEVEL DETECTION
9
P30
WRQ
Input
CD DSP WRITE REQUEST
10
RESET
RESET
Input
RESET
11
X2
X2
Output
MAIN CLOCK
12
X1
X1
Input
MAIN CLOCK
13
VPP/IC
VPP/IC
—
GND
14*
XT2
XT2
—
OPEN
15
P04
CD INT
Input
CD DSP INTERRUPT
16
VDD
VDD
—
(+) POWER SUPPLY
17
P27
CD CLK/MCLK
Output
CD DSP CLOCK/MPEG MICROCOMPUTER CLOCK
18
P26
CD ID/MDI
Output
CD DSP COMMAND/MPEG MICROCOMPUTER COMMA
19
P25
CD DO/MDO
Input
CD DSP CODE Q OUT/MPEG MICROCOMPUTER DATA INPUT
20
P24
CD CE
Output
CD DSP CE OUTPUT
21
P23
CE
Output
CE OUTPUT
22
P22
CLK
Output
CLOCK OUTPUT
23
P21
DI
Output
DATA OUTPUT
24
P20
DO
Output
DATA INPUT
25
AVSS
AVSS
—
ANALOG GROUND
26
ANI7
TUN SM
Input
TUNER SIGNAL METER INPUT
P17
M–BUSY
Input
COMMUNICATE TO MPEG MICROCOMPUTER M_BUSY
27
ANI6
NO USE
Input
GND
28
ANI5
SPEANA 2
Input
SPEANA DATA INPUT 16 kHz
29
ANI4
SPEANA 1
Input
SPEANA DATA INPUT 1 kHz
30
ANI3
SPEANA 0
Input
SPEANA DATA INPUT 63 kHz
31-33
ANI2-ANI0
KEY2-KEY0
Input
KEY INPUT
34
AVDD
AVDD
—
ANALOG VDD
35
AVREF
AVREF
—
ANALOG REF VOLTAGE
36
INTP3
SYS STOP
Input
SYSTEM STOP INPUT
37*
P02
SPRLY
Output
SPEAKER OUTPUT RELAY CONTROL
38
INTP1
NO USED
Input
GND
39
INTP0
REMOCON
Input
REMOCON INPUT
40
VSS
VSS
—
GROUND VOLTAGE
41
P74
SMUTE
Output
SYSTEM MUTE CONTROL
42
P73
T_SOL_B
Output
TAPE 2 SOLENOID CONTROL
43
P72
T_SOL_A
Output
TAPE 1 SOLENOID CONTROL
44
P71
T_MOTOR
Output
TAPE MOTOR CONTROL
45
P70
TIMER LED
Output
TIMER LED CONTROL
46
VDD
VDD
—
(+) POWER SUPPLY
47
P127
AC RLY_CONT
Output
AC RELAY CONTROL
48
P126
SPRLY
Output
SPEAKER OUTPUT RELAY CONTROL
49
P125
SP DET
Input
SPEAKER OUTPUT DETECTION
50
P124
T1 RUN
Input
TAPE 1 RUN PULSE INPUT
51
P123
T2 RUN
Input
TAPE 2 RUN PULSE INPUT
52
P122
CD CLAMP SW
Input
CD CHANGER CLAMP SWITCH
53
P121
T1 PLAY SW_A
Input
PLAY SWITCH FOR T1
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