Sharp CD-BA250H Service Manual page 41

CD-BA250H/CD-BA2600H
IC701 RH-iX0401AWZZ: System Microcomputer (IX0401AW) (1/2)
Pin No. Port Name
1 VDD VDD
2 P37 -20 dB ATT
3 P36 NO USE
4 P35 T_BIAS
5 P34 T_T1/T2
6 P33 REC/PLAY
7 P32 RES OUT
8 P31 DRF
9 P30 WRQ
10 RESET RESET
11 X2 X2
12 X1 X1
13 VPP/IC VPP/IC
14* XT2 XT2
15* P04 SPAN
16 VDD VDD
17 P27 CD CLK
18 P26 CD DI
19 P25 CD DO
20 P24 CD CE
21 P23 CE
22 P22 CLK
23 P21 DI
24 P20 DO
25 AVSS AVSS
26 ANI7 O/C SW
DISC NO SW
27 ANI6 TUNER SM
28 ANI5 SPEANA2
29 ANI4 SPEANA1
30 ANI3 SPEANA0
31-33 ANI2-ANI0 KEY 2-KEY 0
34 AVDD AVDD
35 AVREF AVREF
36 INTP3 P_IN
37 P02 JOG 1
38 P01 JOG 0
39 INTP0 REMOCON
40 VSS VSS
41 P74 SMUTE
42 P73 T_SOL B
43 P72 T_SOL A
44 P71 T_MOTOR
45 P70 TIMER LED
46 VDD VDD
47 P127 AC RLY_CONT
48 P126 SP_RLY
49 P125 SPK_DET
50 P124 T 1 RUN
51 P123 T 2 RUN
52 P122 CD CLAMP SW
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Terminal Name Input/Output
Input
Output
Output
Output
Output
Output
Output
Input
Input
Input
Output
Input
—
—
Input
Input
Output
Output
Input
Output
Output
Output
Output
Input
—
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
—
—
Input
—
Output
Output
Output
Output
Output
Input
Output
Output
Input
Input
Input
Input
(+) POWER SUPPLY.
-20 dB ATTENUATOR.
GND
TAPE RECORD BIAS.
TAPE T1/T2 CHANGE.
TAPE REC/PLAY CHANGE.
CD DSP RESET&MPEG MICROCOMPUTER RESET.
CD RF LEVEL DETECTION.
CD DSP WRITE REQUEST.
RESET
MAIN CLOCK.
MAIN CLOCK.
GND
OPEN
TUNER SPAN CHANGE.
(+) POWER SUPPLY.
CD DSP CLOCK.
CD DSP COMMAND.
CD DSP CODE Q OUT.
CD DSP CE OUTPUT.
CE OUTPUT.
CLOCK OUTPUT.
DATA OUTPUT.
DATA INPUT.
ANALOG GROUND.
CD OPEN/CLOSE SWITCH.
CD DISC NUMBER SWITCH.
TUNER SIGNAL METER INPUT.
SPEANA DATA INPUT 16 kHz.
SPEANA DATA INPUT 1 kHz.
SPEANA DATA INPUT 63 kHz.
KEY INPUT.
ANALOG VDD.
ANALOG REF VOLTAGE.
POWER FAILURE DETECT.
GND
GND
REMOCON INPUT.
GROUND VOLTAGE.
SYSTEM MUTE CONTROL.
TAPE 2 SOLENOID CONTROL.
TAPE 1 SOLENOID CONTROL.
TAPE MOTOR CONTROL.
TIMER LED CONTROL.
(+) POWER SUPPLY.
AC RELAY CONTROL.
SPEAKER OUTPUT RELAY CONTROL.
SPEAKER OUTPUT DETECTION.
TAPE 1 RUN PULSE INPUT.
TAPE 2 RUN PULSE INPUT.
CD CHANGER CLAMP SWITCH.
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Function