RXD-M31MD
6
CIRCUIT DESCRIPTION
4-3 Pin description of main microprocessor
Pin No.
Name
I/O
Description
1
CE
O
SYSTEM IC(LC75396)/PLL IC(LC72131)CE
2
PLL DO
I
PLL data input.
3
SD
I
Tuner SD detector input.
H: no tuned
L: tuned
4
STEREO
I
Tuner stereo detetor input.
H: mono
L: stereo
5
EMPHASIS
O
No used.
6
RDS DATA
I
RDS data input.(E/T type only)
7
CE
I
AC off detector input.
H: AC on
L: AC off
8
BYTE
I
Ground.
9
CNVSS
I
Ground.
10
XCIN
I
Timer clock(32.768kHz).
11
XCOUT
O
Timer clock(32.768kHz).
12
RESET
I
U-com reset signal input.
H: normal
L: reset
13
XOUT
O
Main clock.
14
VSS
-
Ground.
15
XIN
I
Main clock.
16
VCC
-
Power 5.0V)
17
NMI
I
Power 5.0V)
18
REMOCON
I
Remocon signal input.
19
RDX CLK
I
RDS clock input.(E/Ttype only)
20
SCOR
I
Sub code synchro signal input.
21
CD DC OFF
O
Power supply control for CD DSP.
H: off
L: on
22
SCLK
O
CD sense data read out clock.
23
SENSE
I
CD sense input.
24
CD CLK
O
CD DSP clock.
25
XLAT
O
CD DSP latch output.
26
CD DATA
O
CD DSP data output.
27
CD RST
O
CD DSP reset signal output.
H: normal
L: reset
28
SQCK
O
CD sub code clock.
29
SQSO
I
Input of CD sub code.
30
NC
O
No used.
31
FL DATA
O
Data output of FL driver.
32
NC
O
No used.
33
FL CLK
O
Clock output of FL driver.
34
CD ZD
-
No used.
35
UART1
O
Transmission data output to MD(UART).
36
UART2
I
Data input from MD(UART).
37
LCD O
CD
laser
output
control.
H:
off
L:
on
38
NC
O
No used.
39
MD RST
O
MD reset signal output.
H: normal
L: reset
40
CD MON
O
ON/OFF control output of disc monitor.
H: on
L: off
41
NC
O
No used.
42
DM SHORT
O
Same as CD power signal.
H: off
L: on
43
DOOR SW
I
Input port of CD door switch.
H: open
L: close
44,45
NC
O
No used.
46
MODEL
I
Input port of model discrimination.
47
DOLBY
I
No used.
48~50
CODE2~4
I
Discrimination of tuner destination.
51
FL RST
O
Reset signal output of FL driver.
Pin No.
Name
I/O
Description
52
PWX33
O
Control port of MD CE.
53
ENC1
I
Rotary encoder input(vol.A).
54
ENC2
I
Rotary encoder input(vol.B).
55
LED5
O
Control port of LED(MD).
H: on
L: off
56
LED4
O
Control port of LED(CD).
H: on
L: off
57
LED3
O
Control port of LED(standby,RED).
H: off
L: on
58
LED2
O
Control port of LED(standby,GRN).
H: off
L: on
59
LED1
O
Control port of LED(FWD).
H: on
L: off
60
LED0
O
Control port of LED(RVS).
H: on
L: off
61
FL CE
O
Output port of CE(FLdriver).
62
VCC
-
Power supply.
63
NC
O
No used.
64
VSS
-
Ground.
65
A/B-2
65 66
H
H
L
H
L
L
REC
REC PAUSE,ARM
PLAY
O
Deck activity choise mode.
66
A/B-1
O
Deck activity choise mode.
67
CPM
O
Deck motor control.
H: on
L: off
68
SOL
O
Deck solenoid control.
H: on
L: off
69
REC F SW
I
Deck FWD REC switch input.
H: off
L: on
70
REC R SW
I
Deck RVS REV switch input.
H: off
L: on
71
PACK SW
I
Deck pack switch input.
H: off
L: on
72
Cro2 SW
-
No used.
73
PLAY SW
I
Deck play switch input.
H: off
L: on
74
B1/2
-
No used.
75
A120/70
-
No used.
76
BIAS
O
Deck bias control.
H: on
L: off
77
NOR
-
No used.
78
REC/PLAY
-
No used.
79
NR/ON
-
No used.
80
S.CL
O
Clock output to system IC/PLL IC.
81
PRT MD
I
MD protection.
H: protection on
82
FAN H/L
-
No used.
83
FAN ON/OFF
-
No used.
84
A MUTE
O
Audio muting control.
H: off
L: on
85
CD A MUTE
O
CD analog muting control.
H: on
L: off
86
TU.MT
O
Tuner muting control.
H: on
L: off
87
PWR07
O
Power relay control.
H: on
L: off
88
PRT07
I
Detection port of protection.
H: protection on
89~91
KEY1~KEY3
I
Key A/D input(1~3).
92,93
A/DP1,A/DP2
-
No used.
94
TA.MT
O
Muting control of DECK.
H: on
L: off
95
RDS SLEVEL
I
RDS S-level input.(E/T type only)
96
AVSS
-
Ground.
97
PHOTO
I
Deck reel detector input.
98
VREF
-
Reference voltage.(no back up)
99
AVCC
-
Power supply.(back up)
100
S.DI
O
Data output to system IC/PLL IC.
