RD-M52MD/M72MD
5
CIRCUIT DESCRIPTION
3-2 Pin Description of Microprocessor
Pin No.
Pin Name
I/O
Description
1
8SW2
I
Detection port of 8cm disc for CD mechanism.
2
SCLK
O
Clock output to DSP IC(X29,IC9).
3
SENS
I
Sense input port from DSP IC(X29,IC9).
4
FAN/DA
O
Control port of fan motor.
5
DATA
O
Data output to DSP IC(X29,IC9).
6
XRST
O
Reset output to DSP IC(X29,IC9).
7
CLOK
O
Clock output to DSP IC(X29,IC9).
8
BYTE
-
Connected to ground.
9
CNVSS
-
Connected to ground.
10
XTIN
I
Clock input(32.768kHz).
11
XTOUT
O
Clock output(32.768kHz).
12
RESET
I
Reset signal input.
13
XOUT
O
Main clock output(1MHz).
14
VSS
-
Connected to ground.
15
XIN
I
Main clock input(1MHz).
16
VCC
-
Power supply.
17
NMI
-
Power supply.
18
u-COM CE
I
Detection port of AC off.
19
REM
I
Input port of remote control signal.
20
SCOR
I
Input port of sub code synchronized signal.
21
STBY RED
O
Standby LED(red) control terminal.
22
LCD BKLT
O
Control terminal of LCD back light.
23
STBY GR
O
Standby LED(green) control terminal.
24
LED CD
O
LED(CD) control terminal.
25
LED MD/TAPE
O
LED(MD/TAPE) control terminal.
26
CD XLAT
O
Latch output to DSP IC(X29,IC9).
27
ENC A
I
Input port of volume encoder.
28
ENC B
I
Input port of volume encoder.
29
MD RXD
I
Data input from MD mechanism microprocessor.
30
MD TXD
O
Transmission data output to MD mechanism microprocessor.
31
LCD SI
O
Data output to LCD driver.
32
LCD AO
O
AO control to LCD driver.
33
LCD SCL
O
Clock output to LCD driver.
34
LCD RST
O
Reset output to LCD driver.
35
SMK M/D
I
Discrimination port for deck and MD.
36
SQSO
I
Data input for CD sub Q data.
37
SQCK
O
Clock output for CD sub Q data.
38-40
SMK1-3
I
Discrimination port of destination for TUNER.
41
STB
O
Strobe output to NJU3713D(X28,IC4).
42
W/R
O
Unused.
43
SDA
I/O
E2PROM data.
44
SCL
O
E2PROM clock output.
45
OP SW
I
Input port of open switch for deck(deck version only).
46
LCD CSI
O
CE output to LCD driver.
47
CL SW
I
Input port of close switch for deck(deck version only).
48
PH SW
I
Input port of photo sensor for deck(deck version only).
49
REC F SW
I
Deck forward switch input(deck version only).
50
HALF SW
I
Input port of half switch for deck(deck version only).
51
PLAY SW
I
Input port of play switch for deck(deck version only).
52
TYPE SW
I
Detection port for tape type(Normal/CrO2).
53
REC R SW
I
Deck reverse switch input(deck version only).
54
SBUSY
-
Unused.
55
SDATA
-
Unused.
56
RDS DATA
I
RDS data input(E/T type only).
57
TMUTE
O
TUNER muting control.
58
SD
I
Detection terminal of SD signal for TUNER.
59
ST
I
Detection terminal of stereo signal for TUNER.
60
PLL DATA
O
Data output to PLL IC.
61
PLL CLK
O
Clock output to PLL IC.
62
VCC
-
Power supply.
