KRC-765/691/691Y
5
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No.
Pin Name
I/O
Description
Processing Operation
51
P-CON
O
Power control output
H: Power ON L: Power OFF
52
CH-RECH
O
Request output to changers
L: Request
53
CH-RST
O
Reset output to changers
L: Normally
54
CH-MUTE
I
Mute request from changers
H: ON
L: OFF
55
CH-CON
O
Changer control
H: ON
L: OFF
56
P-ON
I/O SW 5V control output
H: OFF
L: ON
57
MOTOR
O
Main motor output
H: ON
L: OFF
58
M-STBY
I
Cassette standby detection
H: STBY
59
T-END
I
Tape end detection
H: Tape play L: Tape end
60
reset
I
Reset input terminal
L: System reset
H: Normally
61
eject
I
Eject key detection
H: OFF
L: ON
62
CH-REQC
I
Request input from changers
H: OFF
L: ON
63
ILL ON
O
Illumination output terminal
H: ON
L: OFF
89
KEY-REQ
I
Panel key interrupt input
L: Key input exist
65
R-CLK
I
Clock input from the RDS decoder IC
66
PACK-IN
I
Cassette pack-in detection
H: Pack-in
67
VSS0
-
GND (port)
68
VDD1
-
Positive power supply
69
X2
-
Main clock output (12MHz)
70
X1
I
Main clock input
71
TEST
I
Program power supply (Mask: Test terminal)
72
XT2
-
Sub clock output (32.768MHz)
73
XT1
I
Sub clock input
74
VDD0
-
Positive power supply (port)
75
AVDD
I
A/D port reference voltage input
76
PHONE
I
Phone detection terminal
Less than 1V: TEL mute
More than 2.5V: NAVI mute
77
T-MODE
I
Tape mode detection
Vth=2.5V
78
S-METTER
I
S-meter input from F/E
79
NOISE
I
FM noise detection input
80
TYPE 0
I
Destination type selection terminal
