Service manual
SD-EX200
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IC701 RH-iX0557AWZZ: System Microcomputer (IX0557AW) (1/2)
1 PA5/AN5 KEY2 A/D Input A/D input, main set key.
2 PA4/AN4 KEY3 A/D Input A/D input, main set key.
3 PA3/AN3 TUN_SM Output TUNER IF signal monitor.
4* PA2/AN2 DAC_DATA Output Fix to "L".
5* PA1/AN1 DAC_CLOCK A/D Input Digital analog converter CLK output.
6 PA0/AN0 PROTECT A/D Input Power abnormal detection.
7 P97/BUZ02/AN15 MOT_LOCK A/D Input Lid motor over current detection.
8 P96/PWM0/AN14 O/C_SW A/D Input A/D input, CD open/close switch.
9 P95/RTP0/AN13 H/P_SW Input Headphones switch input detection.
10 P94/RTP1/AN12 FAN_LOCK A/D Input Fan stop detection.
11 P93/SRDY3/AN11 FAN_CHK Input Ventilation fan motor control. H: FAN ON
12 P92/SCLK3/AN10 POWER_LEVEL 1 Input 1-bit amp. and power switch protect.
13 P91/SOUT3/AN9 POWER_LEVEL 2 Input Speaker protect.
14 P90/SIN3/AN8 +B_CHK Input Observe power on input and decide reset timing.
15 P83/CNTR0/CNTR2 S_MUTE Output Audio mute control. H: MUTE ON
16 P82/CNTR1 TIMER_STBY Output Timer stand-by LED control. H: LED ON
17 CNVSS CNVSS Input GND
18 RESET RESET Input System microcomputer reset input. L: RESET
19 P81/XCOUT SP_RELAY Output Speaker output control by relay. H: RELAY ON
20 P80/XCIN POWER Output Main trans ON/OFF control by relay. H: RELAY ON
21 VSS VSS Input GND
22 XIN XIN Input Main clock input. 4.19 MHz
23 XOUT XOUT Output Main clock input. 4.19 MHz
24 VCC VCC Input Power supply 5 V.
25* P77/INT4/BUZ01 NO USE Output Open.
26* P76/T3OUT
CD_FUNC
Output CD & Ext. DIG function selector.
27 P75/T1OUT DIG_FUNC Output Ext. DIG out ON/OFF control.
L: DIG OUT ON H: DIG OUT OFF
28 P74/PWM1
A/D_RESET
Output 1-bit amp. A/D reset control.
29* P73/INT3/DIMOUT NO USE Output Open.
30 P72/INT2 RX-IN Input Remote control decoder input.
31 P71/INT1 SYS_STOP Input AC power signal monitor.
32 P70/INT0 OFFSET Input 1-bit amp. offset error detection.
33 P67/SRDY2/SCLK/ CD_RESET Output SANYO CD DSP reset output.
FLD55 L: RESET
34 P66/SCLK2/FLD54 CD_CLK Output SANYO CD DSP interface clock output.
35 P65/TXD/FLD53 CD_DI Output SANYO CD DSP interface data output.
36 P64/RXD/FLD52 CD_CE Input SANYO CD DSP interface chip enable.
37 P63/FLD51 CD_DO Input SANYO CD DSP interface data input.
38 P62/FLD50 CD_DRF Input SANYO CD DSP RF monitor signal.
39 P61/FLD49 CD_WRQ Input SANYO CD DSP interface syncro signal.
40 P60/FLD48 CE Output SANYO TUNER PLL/VOL IC interface chip enable output.
41 P57/FLD47 CLK Output SANYO TUNER PLL/VOL IC interface clock output.
42 P56/FLD46 DI Output SANYO TUNER PLL/VOL IC interface data output.
43 P55/FLD45 DO Input SANYO TUNER PLL/VOL IC interface data input.
44 P54/FLD44 EQ_CONT Output VOL 0-26: H VOL 27-40: L
POWER OFF, CLOCK CONFIRMATION: L
45 P53/FLD43 40V_RELAY Output 40 V control port. "H": ACTIVE "L": OFF
46*-48* P52/FLD42-P50/FLD40 NO USE Output Open.
49*-55* P47/FLD39-P41/FLD33 NO USE Output Open.
56 P40/FLD32 SEG_24 Output FL segment driver.
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.