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Sharp SM-SX1 Service Manual page 44

1-bit amplifier
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SM-SX1/SX1W
IC907 RH-iX2845AFZZ: System Microcomputer (IX2845AF)
Pin No.
Port Name
1
LED3, P83
2
LED2, P82
3
LED1, P81
4
LED0, P80
5
AN0, PA0
6
AN1, PA1
7
AN2, PA2
8
AN3, PA3
9
AN4, PA4
10-12
AN5, PA5-AN7, PA7
13
VDD
14
OSC2
15
OSC1
16
VSS
17*
NC
18
TXD, SBD0, P00
19
RXD, SBI0, P01
20
SBT0, P02
21
BUZZER, P06
22*
RMOUT, P10
23*
P11
24
P12, TMIO2
25
P13, TMIO3
26
P14, TMIO4
27
P20, IRQ0
28
P21, IRQ1, SENS
29
P22, IRQ2
30
P60
31
P61
32
P62
33
P63
34
P64
35
P65
36
P66
37*
P67
38
P70
39
P27, NRST
40
MMOD
41
P87, LED7
42
P86, LED6
43
P85, LED5
44
P84, LED4
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Terminal Name
Input/Output
DATA_IN
Input
DATA_OUT
Output
IC_CLK
Input
Input
KEY
Input
VOL DIS
Input
KEYA
Input
KEYB
Input
KEYC
Input
Input
VDD
OSC2
Output
OSC1
Input
VSS
SDATA
Output
SLATCH
Output
SCLK
Output
IC_RESET
Output
AMUTE
Output
CL_CONT
Output
DCLK
Output
DLATCH
Output
DDATA
Input/Output Setting output to D/A. Data input/output
PROTECT
Input
P-IN
Input
IC_STB
Input
DIG_B
Output
DIG_A
Output
MUTE
Output
AUX3
Output
AUX2
Output
AUX1
Output
AMP DIG
Output
AMP ANA
Output
DIG_C
Output
RESET
Input
TEST
SP_RLY
Output
POWER
Output
MUTE
Output
YOBI OUT
Output
External IC communication input
External IC communication output
External IC communication clock
Not used
Key input. A/D input. VER.1
A/D input to display VOL value
Key input. A/D input. VER.2
Key input. A/D input. VER.2
Key input. A/D input. VER.2
Not used
Power supply
Oscillator
Oscillator
Power supply
Not used
Output to serial/parallel converter for LED display. Data output
Output to serial/parallel converter for LED display. Latch output
Output to serial/parallel converter for LED display. Clock output
Reset output to external IC
Output for AUDIO MUTE
Clock control between external IC and IC
Setting output to D/A. Clock output
Setting output to D/A. Latch output
PROTECT signal detection input
Warning input
External IC communication strobe
Digital input switch B
Switch of digital input is controlled with DIG_A and B.
Digital input switch A
Output for digital mute
Input relay of AUX3 is switched.
Input relay of AUX2 is switched.
Input relay of AUX1 is switched.
Input (digital, analog) to AMP is switched.
Input (digital, analog) to AMP is switched.
Digital input switch C
Switch of digital input accompanied to AUX1 is controlled.
Reset
TEST
ON/OFF of speaker relay
Control terminal of power supply
Line mute for recording
Warning output
– 44 –
Function

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