Microcomputer's Terminal Description - Kenwood KRC-508S Service Manual

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MICROCOMPUTER'S TERMINAL DESCRIPTION

784217AGF503(504)(IC1 : MAIN UNIT)
Pin
Pin Name
1
P60/A16
2
P61/A17
3
P62/A18
4
P63/A19
5
P64/RD
6
P65/WR
7
P66/WAIT
8
P67/ASTB
9
Vdd
10
P100/TI5/TO5
11
P101/TI6/TO6
12
P102/TI7/TO7
13
P103/TI8/TO8
14
P30/TO0
15
P31/TO1
16
P32/TO2
17
P33/TI1
18
P34/TI2
19
P35/TI00
20
P36/TI01
TE
21
P37
L 13942296513
22
TEST
23
P90
24
P91
25
P92
26
P93
27
P94
28
P95
29
P120/RTP0
30
P121/RTP1
31
P122/RTP2
32
P123/RTP3
33
P124/RTP4
34
P125/RTP5
35
P126/RTP6
36
P127/RTP7
37
Vdd
38
X2
39
X1
40
Vss
41
XT2
42
XT1
43
RESET
44
P00/INTP0
www
45
P01/INTP1
46
P02/INTP2/NMI
47
P03/INTP3
48
P04/INTP4
.
49
P05/INTP5
50
P06/INTP6
Signal Name I/O
ST_TYPE1
I
E-VOL setting selection input
ST_TYPE2
I
E-VOL setting selection input
Genuine/generally-marketed identification
JS_TYPE1
I
input.
TYPE1
I
Destination type switching input 1
TYPE2
I
Destination type switching input 2
TYPE3
I
Destination type switching input 3
NC
O Not used
NC
O Not used
-
Positive power supply pin
AMP_SVR
O Power IC reset control
AMP_STBY
O Power IC standby control
AMP_MUTE
O Power IC muting control
NC
O Not used
ACC_DET
I
Acc detection input
BU_DET
I
B-U detection input
SMALL
I
Small input
P_CONT
O Power control
P_ANT
O Power antenna control
REMO
I
Remote control input
P_ON
O Internal power control
ILL_ON
O LED lighting control output
-
IC test pin
IC2_SDA
I/O E-VOL/E's + data input/output
IC2_SCK
O E-VOL/E' + clock output
MUTE
O Muting control
SW5V
O SW 5 V control
F/E_DATA
I/O IC3 data input/output
F/E CLK
O IC 3 clock output
CH_CON
O CH control
CH_REQH
O CH send request output
NC
O Not used
NC
O Not used
C-MAIN_M
O C-mechanism main motor control
C-SUB_M+
O C-mechanism loading motor control
C-SUB_M-
O C-mechanism loading motor control
NC
O Not used
-
Positive power supply pin
-
Main system clock oscillator pin
-
Main system clock oscillator pin
-
GND pin
-
Sub-system clock oscillator pin
-
Sub-system clock oscillator pin
I
System reset input pin
NC
O Not used
RDS_CLK
I
RDS clock input
CH_REQC
I
CD-CH send request input
x
ao
u163
y
LCD_DATAL
I
Data input from LCD driver
C-MODE_1
I
C-mechanism mode detection 1 input
i
C-MODE_2
I
C-mechanism mode detection 1 input
C-MODE_3
I
C-mechanism mode detection 1 input
KRC-508S/688
2 9
8
Purpose
Q Q
3
6 7
1 3
1 5
co
.
9 4
2 8
Operation Description
DEFAULT:LO
DEFAULT:LO
DEFAULT:LO
Power ON: Lo.
Standby canceled: Hi.
Standby mode: Lo.
Muting ON: Lo. Muting OFF: Hi.
ACC OFF:HI ACC ON:LO
B-U down: Hi. B-U normal: Lo.
Dimmer ON: Lo. Dimmer OFF: Hi.
ON:HI OFF:LO
TUNER: Hi. Other sources: Lo.
ON:HI OFF:LO
Lighting ON: Hi. Lighting OFF: Lo.
0 5
8
2 9
9 4
2 8
Muting ON: Hi. Muting OFF: Lo.
ON:LO OFF:HI
ON:HI
Requested: Lo.
ON:HI OFF:LO
m
Requested: Lo.
9 9
9 9
3
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Krc-688

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