KRC-709,779R/RY,889
5
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin
Name
I/O
Purpose
Operation Description
36
X1
I
Main clock connection terminal.
37
Vss
-
Grounding terminal.
38
Vdd
-
Positive power supply terminal.
39
CLKOUT
O
Internal System Clock output.
40
N.C
O
No connection.
41
MOTOR
O
Cassette mechanism main motor
When the motor is running: H.
output terminal.
When it is stopped: L.
42
MODE3
I
Cassette mechanism mode detection terminal.
43
MODE1
I
Cassette mechanism mode detection terminal.
44
MODE2
I
Cassette mechanism mode detection terminal.
45
N.C
O
Outputs Low. No connection.
46
SUB1
O
Sub-motor output terminal (1).
47
SUB2
O
Sub-motor output terminal (2).
48
SUB3
O
Sub-motor output terminal (3).
49
CAS/SRM
O
Cassette mechanism/SRM mechanism
Cassette mechanism: H.
voltage switching terminal.
SRM mechanism: L.
50
N.C
O
Outputs Low. No connection.
51
N.C
O
Outputs Low. No connection.
52
ILL-ON
O
FL +B output terminal.
ON: H, OFF: L
53
PAN-5V
O
Panel 5 V control terminal.
54
N.C
O
Outputs Low. No connection.
55
BVdd
-
Positive power supply terminal.
56
BVss
-
Grounding terminal.
57
TYPE1
I
Destination type switching port.
58
TYPE0
I
Destination type switching port.
59
N.C
O
Outputs Low. No connection.
60
N.C
O
Outputs Low. No connection.
61
ST TYPE1
I
IC2 destination type terminal.
Default: L.
62
ST TYPE0
I
IC2 destination type terminal.
Default: L.
63
SRM-SW1
I
Panel position detection switch 1.
Normal: H. Reset: L. Panel detached: L.
64
PAN-RESET
O
Reset output to Panel u-COM.
Momentary power down: L.
Microcomputer overrun: L.
65
L CE
I/O CE terminal for LCD driver.
66
SRM-SW3
I
Panel position detection switch 3.
67
SRM-SW2
I
Panel position detection switch 2.
68
FWD/REV
O
TAPE EQ input switching terminal.
FWD: L. REW: H.
During TAPE PLAY: H.
Constant switching terminal in case
During TAPE FF/REW or other than
69
MS-CONT
I/O
TAPE input: L.
of blank detection.
Cassette mechanism detected: L.
Cassette mechanism not detected: H.
70
AVCONT
O
AD reference voltage control output.
Same timing as P-ON. H during
operation.
71
Avdd
-
Positive power supply terminal.
72
Avss
-
Grounding terminal.
73
Avref
I
Reference voltage supply terminal for
A/D converter.
74
PHONE
I
PHONE detection terminal.
TEL MUTE: No more than 1 V.
NAVI MUTE:2.5 V or more.
75
R-REEL
I
Cassette mechanism reel pulse input (REV).
Vth = 2.5 V.
UPD703033GC050 (IC1: X14)
SYSTEM MICROCOMPUTER
