Read Sharp CD-C471H (serv.man13) Service Manual online
CD-C471H
– 54 –
IC701 RH-iX0170AWZZ:System Microcomputer (IX0170AW) (1/2)
1-5
P94/FIP6-P90/FIP2
G06-G02
Output
FL display tube grid drive
6,7
P81/FIP1,P80/FIP0
G01,G00
Output
FL display tube grid drive
8
VDD
VDD
—
Positive power supply
9
P27/SCK0
C
2
B CLK
Output
C
2
B serial clock output
10
P26/SO0/SB1
C
2
B DO
Output
C
2
B serial data output
11
P25/SI0/SB0
C
2
B DI
Input
C
2
B serial data input
12
P24/BUSY
C
2
B CE
Output
C
2
B serial CE output
13
P23/STB
SUB STB
Output
Serial strobe output for CD/TAPE microcomputer
14
P22/SCK1
SUB SCK
Output
Serial clock output for CD/TAPE microcomputer
15
P21/SO1
SUB SO
Output
Serial data output for CD/TAPE microcomputer
16
P20/SI1
SUB SI
Input
Serial strobe input for CD/TAPE microcomputer
17
RESET
RESET
Input
Reset input
18
P74
SUB RES
Output
Reset output for CD/TAPE microcomputer
19
P73
TUN MUTE
Output
Tuner TUN MUT output
20
AVSS
AVSS
—
Analog power supply for A/D converter
21
P17/ANI7
TUN SD
Input
Tuner station detection input
22
P16/ANI6
TUN SM
Input
Tuner signal meter input
23
P15/ANI5
KEY IN5
Input
Key input 37-45
24
P14/ANI4
KEY IN4
Input
Key input 28-36
25
P13/ANI3
KEY IN3
Input
Key input 19-27
26
P12/ANI2
KEY IN2
Input
Key input 10-18
27
P11/ANI1
KEY IN1
Input
Key input 1-9
28
P10/ANI0
ENF IN
Input
Tuner initial setting input
29
AVDD
AVDD
—
Analog positive power supply for A/D converter
30
AVREF
AVREF
—
Reference power supply for A/D converter
31
P04/XT1
VSS
Input
Sub-clock input To be connected to Vss
32*
XT2
N.C
—
Sub-clock output OPEN
33
VSS
VSS
—
GND power
34
X1
X1
Input
Main clock 4.194304 MHz
35
X2
X2
Output
Main clock 4.194304 MHz
36
P37
LED LCK
Output
LED IC serial clock output BU2092 LCK
37
P36/BUZ
LED DATA
Output
LED IC serial data output BU2092 DATA
38
P35/PCL
LED CLK
Output
LED IC serial clock output BU2092CLK
39*
P34/TI2
RDS ID
Input
RDS RDS station detection input
40*
P33/TI1
RDS SYNC
Input
RDS Data sync detection input
41*
P32/TO2
RDS SYR
Output
RDS RAM reset output LC72720 SYR
42
P31/TO1
SYS MUTE
Output
System mute output
43
P30/TO0
POWER
Output
POWER output
44*
P03/INTP3/CI0
Output
No use
45*
P02/INTP2
Output
No use
46
P01/INTP1
SYS STOP
Input
Power failure input
47
P00/INTP0/TI0
REM IN
Input
Remote Control Input
48
IC
VSS
—
Connect with GND
49*
P72
Output
No use
50*
P71
Output
No use
51*
P70
Output
No use
52
VDD
VDD
—
Positive power supply
53*
P127/FIP33
—
No use
54-60
P126/FIP32-P120/FIP26 S21-S15
Output
FL display tube segment drive
61-68
P117/FIP25-P110/FIP18 S14-S07
Output
FL display tube segment drive
69,70
P107/FIP17,P106/FIP16 S06,S05
Output
FL display tube segment drive
Terminal Name
Pin No.
Input/Output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Function
Port Name
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