UPD784217GC103(105) (IC1: X14-618X-XX)
System MicroComputer
Pin
Pin Name
Signal Name
I/O
Purpose
Operation Description
52
P84/A4
WIDE
O
K2I Forced Wide output.
H:Forced Wide
53
P85/A5
NARROW
I/O
K2I Forced Narrow output.
H:Forced Narrow
54
P86/A6
AFC
I
Noise detection time constant SW
During reception: Hi
/During search: Lo.
55
P87/A7
SRM_SW2
I
SRM eject position detection.
EJECT:Hi
56
P40/AD0
QUAL
I
RDS reception quality.
57
P41/AD1
R_DATA
I
RDS data input.
58
P42/AD2
SRM_DET
I
SRM mechanism detection.
Detected: Lo /Not detected: Hi.
59
P43/AD3
FM_SD
I
FM SD input.
Station detected: Hi
/Not detected: Lo.
60
P44/AD4
N.C.
O
61
P45/AD5
MUSIC
I
Blank detection input.
Music detected: Lo
/Music not detected: Hi.
62
P46/AD6
B/C
O
Dolby B/C switching.
B = Lo, C = Hi
63
P47/AD7
Dolby
O
Dolby output.
ON : Hi, OFF : Lo
64
P50/A8
EQ_MUTE
O
EQ muting output.
During play: Lo /FF or REW:
65
P51/A9
MTL
O
Metal output.
NOMAL : Hi, METAL : Lo
66
P52/A10
F/R
O
Tape EQ input switching.
FWD:Lo, REW:Hi
67
P53/A11
MSC
O
Blank detection time constant
switching.
During play: Hi /FF or REW:
Lo.
68
P54/A12
MODE3
I
Cassette mechanism mode detection.
69
P55/A13
MODE1
I
Cassette mechanism mode detection.
70
P56/A14
MODE2
I
Cassette mechanism mode detection.
71
P57/A15
PACK_DET
I
Cassette mechanism pack detection.
Pack detected: Lo.
72
Vss
GND
-
GND terminal.
73
P60/A16
TYPE0
I
Destination type terminal 0.
74
P61/A17
TYPE1
I
Destination type terminal 1.
75
P62/A18
TYPE2
I
Destination type terminal 2.
76
P63/A19
ST_TYPE0
I
IC2 Ver.3 destination type terminal 0.
77
P64/RD
ST_TYPE1
I
IC2 Ver.3 destination type terminal 1.
78
P65/WR
N.C.
O
Not used.
79
P66/WAIT
N.C.
O
Not used.
80
P67/ASTB
N.C.
O
Not used.
81
Vdd
Vdd
-
B.U.5V
82
P100/TI5/TO5
SVR
O
SVR discharge control.
POWER OFF:Hi
83
P101/TI6/TO6
PREMUTE
O
PRE mute.
Active: Lo.
84
P102/TI7/TO7
PMUTE
O
Power IC muting.
P IC ON : Hi
85
P103/TI8/TO8
CASS/SRM
O
Cassette mechanism / SRM
mechanism voltage SW terminal.
C mech.:Hi, SRM mech.:Lo
86
P30/TO0
ANT_CON
O
Antenna control.
Active: Hi.
87
P31/TO1
AM+B
O
AM power supply.
Active: Hi.
88
P32/TO2
FM+B
O
FM power supply.
Active: Hi.
89
P33/TI1
P_CON
O
Power control.
Active: Hi.
90
P34/TI2
ACC_DET
I
Acc detection.
Acc OFF:Hi.
91
P35/TI00
REMO
I
Remote control input.
92
P36/TI01
P_ON
O
Power supply control.
POWER ON:Hi
93
P37
BU_DET
I
Momentary power down detection.
Power down: Hi.
94
TEST
TEST
-
Test terminal.
95
P90
IC2_SDA
I/O
IC2, IC5 and EEPROM data line.
96
P91
IC2_SCK
O
IC2, IC5 and EEPROM clock line.
97
P92
MUTE
O
Muting terminal.
OPEN:MUTE ON
98
P93
SW5V
O
5 V power supply.
Lo=SW5 ON
99
P94
N.C.
O
Not used.
100 P95
N.C.
O
Not used.
KRC-778R/RV/RY/RYV,878R,PS978R
4
MICROCOMPUTER TERMINAL DESCRIPTION
