Sharp SD-AT1000, Service Manual

Page: 51 / 72

– 51 –
SD-AT1000
Input/Output
IC701 RH-iX0558AWZZ: System Microcomputer (IX0558AW) (1/2)
1 PA5/AN5 FAN_LOCK A/D Input Fan stop detection.
2 PA4/AN4 PROTECT A/D Input Power abnormal detection.
3 PA3/AN3 +B_CHECK A/D Input Observe power on input and decide the reset timing.
4 PA2/AN2 JOG Input Key input jog.
5* PA1/AN1 FAN_CHK A/D Input Fan motor rotation detect input.
6 PA0/AN0 A/D RESET Input/Output 1-bit amp. A/D RESET control.
7 P97/BUA02/AN15 OFF_SET Input 1-bit amp. OFFSET error detection. "L": ABNORMAL
8 P96/PWM0/AN14 POWER_LEVEL1 Output 1-bit amp. and power switch detection.
(-B CONT)
9 P95/RTP0/AN13 POWER_LEVEL2 Output Speaker protect.
(REG ON)
10* P94/RTP1/AN12 TUNER_SM Input Tuner IF signal monitor.
11* P93/SRDY3/AN11 RDS_RDY Input RDS ready output.
12* P92/SCLK3/AN10 RDS_CLK Output RDS clock output.
13* P91/SOUT3/AN9 RDS_RST Output RDS RAM reset.
14* P90/SIN3/AN8 RDS_DO Input RDS data input.
15 P83/CNTR0/CNTR2 CCB_CE Output TUNER PLL/VOL IC interface chip enable output.
16 P82/CNTR1 CCB_DO Input TUNER PLL/VOL IC interface data output.
17 CNVSS CNVSS Input GND
VPP (FLASH)
18 RESET RESET Input System microcomputer reset input. "L": RESET
19 P81/XCOUT CCB_CL Output TUNER PLL/VOL IC interface clock output.
20 P80/XCIN CCB_DI Output TUNER PLL/VOL IC interface data output.
21 VSS VSS Input GND
VSS (FLASH)
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.
VCC (FLASH)
25 P77/INT4/BUZ01 POWER KEY Input Power ON key input.
26 P76/T3OUT DD_LED Input Dolby digital indicator. "H" (OPEN): OFF "L": ON
27 P75/T1OUT DPL_LED Input Dolby prologic indicator. "H" (OPEN): OFF "L": ON
28* P74/PWM1 40 V RELAY Output 40 V control port. "H": ACTIVE "L": OFF
29 P73/INT3/DIMOUT H.P_SW Input Headphones detection switch input.
30 P72/INT2 RX_IN INT Input Remocon decoder input.
31 P71/INT1 SYS_STOP INT Input AC power signal monitor. "H"
→
"L" power failure detect.
32 P70/INT0 DIMMER Output Dimmer
L: Dimmer ON, Power OFF, Power failure
H: Dimmer OFF
33 P67/SRDY2/SCLK22/FLD55 DSP_CS Input DSP IC communication strobe serial output.
34 P66/SCLK2/FLD54 DSP_SCCLK Output DSP IC communication serial clock output.
35 P65/TXD/FLD53 DSP_SCDIN Output DSP IC serial data output.
36 P64/RXD/FLD52 DSP_SCDOUT Input DSP IC serial data input.
37 P63/FLD51 DSP_RESET Output DSP IC communication interface clock.
38 P62/FLD50 DSP_INTREQ Input Request signal input to receive DSP data.
"L": DSP Microcomputer demand data
39* P61/FLD49 D. TIME CONT Output Deadtime control port. Only in tuner mode: "H"
40 P60/FLD48 Input Not used.
41 P57/FLD47 STD_LED Output Standard sound mode indicator.
"H" (OPEN): OFF "L": ON
42 P56/FLD46 DTS_LED Output DTS indicator. "H" (OPEN): OFF "L": ON
43 P55/FLD45 SURR_LED Output Surround sound mode indicator.
"H" (OPEN): OFF "L": ON
Port Name Pin No.
Function
Terminal Name
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.