Function Table Of Ic - Sharp GX-CH170X Service Manual

GX-CH170X/CH170Z
IC901 RH-iX0146AWZZ (IX0146AW): System Control Microcomputer
Terminal
Pin No.
Name
1 P03 MTCONT2
2 P10 POWER IN
3 D0 POWER ON
4 P12 DATA(VOL)
5 P13 STB(VOL)
6 P11 CK(VOL)
7 D1 MUTE
8 D2 SYNC OUT
9 D3 RES
10 D4 CQCK
11 D5 COIN
12 D6/CNTR0 RWC
13 D7/CNTR1 SL+
14 D8/INT0/ZEROX SL-
15* D9/SCK/RTP0 SRS2
16* D10/SOUT/ SRS1
RTP1/PWM
17 P20/SIN DRF
18 P21/INT1 SQOUT
19 P22 WRQ
20 P23 PU IN
21 RESET RESET
22 X IN X IN
23 X OUT X OUT
24 VSS D GND
25 VDD D +5V
26 XCOUT SU CLOUT
27 XCIN SU CLIN
28 AVSS ADGND
29 VREF AD +5V
30 SEG26/P30/ REMOCON
INT2/AIN0
31 SEG25/P31/AIN1 AC/DC
32 SEG24/P32/AIN2 CD FUNC/
SYNC-IN
33 SEG23/P33/AIN3 KEY1
34 SEG22/P40/AIN4 KEY2
35 SEG21/P41/AIN5 MODEL
36 SEG20/P42/AIN6 TRAY SW
37 SEG19/P43/AIN7 UP/LID SW
38 VLC3 VLC3
39 SEG18/VLC2 VLC2
40 SEG17/VLC1 VLC1
41-44 COM3-COM0 COM3-COM0
45-61 SEG16-SEG0 SEG16-SEG0
(45*-52*)
62 P00 TR1 LED
63 P01 TR2 LED
64 P02 MTCONT1
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

FUNCTION TABLE OF IC

Port Name Input/
Output
Output Changer mechanism motor control output No.2.
Input Power key input.
Output "L" when power is turned on.
Output Electronic volume data.
Output Volume change after data fetching.
Output Electronic volume data fetch timing signal.
Output System mute signal output.
For audio signal muting
Output Deck motor control output. "H" when REC is required for CD function.
Output Reset output.
Output Serial data sync clock for interface.
Output Servo control signal processing IC command output.
Output READ/WRITE control output. (from microcomputer)
Output Slide motor feed output.
Output Slide motor return output. SL+/SL- combination control. Track count monitor
Output Surround control output 2.
Output Surround control output 1. Surround control with SRS1 and 2.
However, since Surround has three positions, "H, H" is not used.
Intput HF level detection input.
Input Sub-code Q data input.
Input Detection input for sub-Q code output standby.
Disc deceleration signal monitor. Track count monitor.
Input CD pickup position detection. Innermost periphery: "L"
Input If "L" state is held for more than 0.75 usec (one machine cycle), reset state isset
(in case of 4 MHz oscillation).
Input Main clock input.
Output Main clock output.
— Power terminal GND (0V)
— Power terminal +5V
Output Sub-clock output.
Input Sub-clock input
— A/D converter reference voltage GND terminal (0V is applied)
— A/D converter reference voltage input terminal.
Applied voltage must be not lower than 2V but not higher than VDD.
Input Remote control signal input.
To be detected at fall edge.
Input AC/DC discrimination port. AC: "L" DC: "H"
Input Function/REC detection.
Input Operation key input No.1.
Input Operation key input No.2.
Input Model discrimination when power is turned on.
Input Changer mechanism switch input. 5-position analog input.
Input Open TOP type: LID SW port. Changer type: Mechanism UP SW port.
Input LCD bias setting power terminal.
Input Internal divided resistor is connected. 1/3 bias, 1/4 duty
Input Internal divided resistor is connected.
Output LCD control common terminal (1/4 duty).
Output LCD control segment terminal.
Output For CD changer validity indication. For output tray No.1.
Output For CD changer validity indication. For output tray No.2.
Output Changer mechanism motor control output No.1.
Function
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