Service manual
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CD-E700/CD-E77
IC701 RH-iX0553AWZZ: System Microcomputer (IX0553AW) (1/2)
1 VDD VDD Input (+) Power supply.
2 P37 -20dBATT Output -20dB Attenuator.
3* P36 SUB_CE Output MP3 sub microcomputer.
4 P35 T_BIAS Output Tape record bias.
5 P34 T_T1/T2 Output Tape T1/T2 change.
6 P33 T_REC/PLY Output Tape REC/PLAY change.
7 P32 CD_RESOUT Output CD DSP reset.
8 P31 CD WRQ Input CD write read request..
9* P30 NO USE Input Connect to GND.
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_DRF Input CD DRF level detection.
16 VDD VDD Input (+) Power supply.
17 P27 CD_CLK Output CD DSP clock.
18 P26 CD_DI Output CD DSP command.
19 P25 CD_DO Input CD DSP CODE Q out.
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 Input Data input.
25 AVSS AVSS — Analog ground.
26 P17 D.NO SW Input CD DISC No. SW
27* ANI6 NO USE Input Connect to GND.
28 ANI5
PLAY2/FPA/FPB SW
Input Tape F.P A/B SW & PLAY 2 SW.
29 ANI4 PROTECT Input Power abnormal detect.
30 ANI3 LVL_DET Input Speaker output level detect.
31-33 ANI2-ANI0 KEY 2-KEY 0 Input Key input.
34 AVDD AVDD Input Analog VDD.
35 AVREF AVREF — Analog ref voltage.
36 INTP3 P_IN Input Power failure detect.
37 P02 CLAMP SW Input CD CLAMP SW.
38 INTP1 SP_DET Input Speaker abnormal detect.
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 Input (+) Power supply.
47 P127 AC_RLY Output AC relay control.
48 P126 SP_RLY Output Speaker relay control.
49 P125 JOG 1 Input Volume jog input 1.
50 P124 JOG 2 Input Volume jog input 2.
51 P123 T 2_RUN Input TAPE 2 RUN PULSE input.
52 P122 T 1_RUN Input TAPE 1 RUN PULSE input.
53* P121 MONST LED Output Monster LED.
Port Name Terminal NamePin No. Input/Output
Function
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.