JVC KS-LH4R Service Manual page 22

KS-LH4R
QQ
3 7 63 1515 0
UPD178018AGC621 (IC701) : CPU
1. Pin layout
2. Pin function
Pin No.
Port Name
1 KEY 0
KEY 1
2
3 KEY 2
LEVEL
4
5 SM
6 SQ
7 LCDCE
8 LCDDA
9 LCDCK
10 BUSI/O
OPEN
11
12 BUSSI
BUSSO
13
14 BUSSCK
15 NC
TE
L 13942296513
16 NC
17 NC
18 NC
19 INLOCK
NC
20
21 GNDPORT
VDDPORT
22
23 NC
24 AFCK
25 MONO
26 FM/AM
27 SEEK/STOP
28 NC
IFC
29
30 VDDPLL
FMOSC
31
32 NC
33 GNDPLL
34 AMEO
35 FMEO
www
36 IC
37 SD/ST
STAGE0
38
39 NC
MOTOR
40
1-22
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80 ~ 61
1 60
20 41
21 ~ 40
I/O
Key input 0
I
I Key input 1
I Key input 2
I Level meter input
I S.meter level input
I S.Quality level input
O CE output to LCD driver
O Data output to LCD driver
O Clock output to LCD driver
I/O selector output for J-BUS, H : OUT, L: INPUT
I
I Door open detect input
I J-BUS Data input
O J-BUS Data output
I/O J-BUS Clock in/output
- Non connect
- Non connect
- Non connect
- Non connect
Non connect
-
- Non connect
- Port GND
- Port Vdd
- Non connect
O AF check output, L: AF check
O Monaural on /off selecting output, H:mono on
O FM/AM switching output L : FM H : AM
O Auto seek /stop selecting output, H: Seek, L:Stop
Non connect
-
I FM/AM midle frequency counter input
- PLL Vdd
I FM/AM limited generator frequency input
- None connect
- PLL GND
O AM error out output
O FM error out output
- GND
x ao
y
Station detector, Stereo signal input, H:Find Station, L:Stereo
I
. i
I Pull up
- Non connect
O Main motor output
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8
Descriptions
Q Q
3 6 7 1 3
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2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
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9 9
2 8 9 9