RXD-M35
6
CIRCUIT DESCRIPTION
Voltage
0
0.89
1.55
2.00
2.61
3.02
3.42
5.00
Range
Key 1
ON/
AUX
TUNER
SKIP
STOP
CD
SKIP
(off)
DOWN
PLAY
UP
TAPE
MODE
SET
(off)
PLAY
5. Microcomputer : MN101C51F (IC401)
5-1 Microcomputer Periphery Block Diagram
Key Matrix VREF =5.0V
5-2 Pin Description of Microcomputer : MN101C51F (IC401)
Description
-
Connected to power 5.0V).
I
Reel sensor input for cassette deck.
I
Discrimination of tuner destination.
I
RDS signal level input(E/T type only).
I
A/D key (key1) input port.
6
KEY2
I
A/D key (key2) input port.
7
A LEVEL
-
Unused.
8
TH
-
Unused.
9
CD PROTECTION
I
Detection port for CD protection.
10
VREF +
I
A/D reference v5V).
11
VCC
I
Power 5.0V).
12
OSC2
O
Main clock oscillator(8.388MHz).
13
OSC1
I
Main clock oscillator(8.388MHz).
14
VSS
I
GND.
15
X1
I
Timer clock input(32.768kHz).
IC701
PLAY BACK/REC EQ. IC
AN7317
IC801
FL DRIVER
(MN12510F)
FL801
IC301
(HNA-14SM06)
Vaccume Fluorescent Display
SYSTEM IC
(LC75342M)
IC401
MN101C51F
IC202
IC102
DSP IC
(MN662748WB)
PLL IC
LC72131M
IC103
CD MECHA.
(KSM213)
RDS IC (E/T TYPE)
(BU1923F)
IC802
VR801
KEY
REMOTE
ENCORD
DECK MECHA.
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