Sharp CD-BA1200H, Service Manual

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CD-BA1200H
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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