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3-2 Pin Description of Microprocessor
Pin No.
Pin Name
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
u-COM CE
19
20
21
STBY RED
22
LCD BKLT
23
STBY GR
24
25
LED MD/TAPE
26
CD XLAT
27
28
29
MD RXD
30
31
32
33
LCD SCL
34
LCD RST
35
SMK M/D
36
37
38-40
41
42
43
44
45
46
LCD CSI
47
48
49
REC F SW
50
HALF SW
51
PLAY SW
52
TYPE SW
53
REC R SW
54
55
56
RDS DATA
57
58
59
60
PLL DATA
61
PLL CLK
62
CIRCUIT DESCRIPTION
I/O
8SW2
I
Detection port of 8cm disc for CD mechanism.
SCLK
O
Clock output to DSP IC(X29,IC9).
SENS
I
Sense input port from DSP IC(X29,IC9).
FAN/DA
O
Control port of fan motor.
DATA
O
Data output to DSP IC(X29,IC9).
XRST
O
Reset output to DSP IC(X29,IC9).
CLOK
O
Clock output to DSP IC(X29,IC9).
BYTE
-
Connected to ground.
CNVSS
-
Connected to ground.
XTIN
I
Clock input(32.768kHz).
XTOUT
O
Clock output(32.768kHz).
RESET
I
Reset signal input.
XOUT
O
Main clock output(1MHz).
VSS
-
Connected to ground.
XIN
I
Main clock input(1MHz).
VCC
-
Power supply.
NMI
-
Power supply.
I
Detection port of AC off.
REM
I
Input port of remote control signal.
SCOR
I
Input port of sub code synchronized signal.
O
Standby LED(red) control terminal.
O
Control terminal of LCD back light.
O
Standby LED(green) control terminal.
LED CD
O
LED(CD) control terminal.
O
LED(MD/TAPE) control terminal.
O
Latch output to DSP IC(X29,IC9).
ENC A
I
Input port of volume encoder.
ENC B
I
Input port of volume encoder.
I
Data input from MD mechanism microprocessor.
MD TXD
O
Transmission data output to MD mechanism microprocessor.
LCD SI
O
Data output to LCD driver.
LCD AO
O
AO control to LCD driver.
O
Clock output to LCD driver.
O
Reset output to LCD driver.
I
Discrimination port for deck and MD.
SQSO
I
Data input for CD sub Q data.
SQCK
O
Clock output for CD sub Q data.
SMK1-3
I
Discrimination port of destination for TUNER.
STB
O
Strobe output to NJU3713D(X28,IC4).
W/R
O
Unused.
SDA
I/O
E2PROM data.
SCL
O
E2PROM clock output.
OP SW
I
Input port of open switch for deck(deck version only).
O
CE output to LCD driver.
CL SW
I
Input port of close switch for deck(deck version only).
PH SW
I
Input port of photo sensor for deck(deck version only).
I
Deck forward switch input(deck version only).
I
Input port of half switch for deck(deck version only).
I
Input port of play switch for deck(deck version only).
I
Detection port for tape type(Normal/CrO2).
I
Deck reverse switch input(deck version only).
SBUSY
-
Unused.
SDATA
-
Unused.
I
RDS data input(E/T type only).
TMUTE
O
TUNER muting control.
SD
I
Detection terminal of SD signal for TUNER.
ST
I
Detection terminal of stereo signal for TUNER.
O
Data output to PLL IC.
O
Clock output to PLL IC.
VCC
-
Power supply.
Digitized in Heiloo the Netherlands
RD-M52MD/M72MD
Description
1/20/2020
5
Not for sale!
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