KDC-8024
10
Pin No.
Pin Name
I/O
Purpose / Description
Procesing Operation
35
TX1
-
36
TX2
-
37
REGC
-
Connect to 1
µ
F capacitor.
38
X1
-
Main clock.
20MHz
39
X2
-
Main clock.
20MHz
40
Vss
-
Vss
41
VDD
-
Vdd
42
CLKOUT
-
43~47
NC
O
Output : L
48
FL+3.3V
O
FL3.3V ON/OFF.
Hi-Z : OFF, L : ON (Time constant check, 1ms)
49
FL+B
I/O
FL+B ON/OFF.
Hi-Z : OFF, L : ON (Time constant check, 35
µ
s)
50~57
NC
O
Output : L
58
Vdd
-
Vdd
59
Vss
-
Vss
60~69
NC
O
Output : L
70
VOLUME B
I
VOL input.
71
VOLUME A
I
VOL input.
72
SA RST
O
Spectrum analyzer IC reset.
H : reset, L : Normally
73
AV CONT
O
VREF control.
Operation : H
74
Avdd
-
Vdd
75
Avss
-
Vss
76
Avref
-
Connect to 73 pin.
77
F01
I
BPF (63Hz)
78
F02
I
BPF (150Hz)
79
F03
I
BPF (330Hz)
80
F04
I
BPF (1kHz)
81
F05
I
BPF (3.3kHz)
82
F06
I
BPF (10kHz)
83
WAVE IN
I
Audio input.
84~88
KR5~KR1
I
Key return.
89
SC REQ
O
Communication request to system
µ
-com.
H : Request
90
NC(FAC IN)
O
Output : L
91
SC CON
I
Panel
µ
-com control.
H : Operation
92
OPEN KEY
I
OPEN key input.
H : OFF, L : ON
93
SRC KEY
I
SRC key input.
H : OFF, L : ON
94
NC
O
Output : L
95
MC REQ
I
Communication request from system
µ
-com.
H : Request (Reset, low current consumption mode
: System
µ
-com output “L”)
96
NC
O
Output : L
97~99
NC
O
Output : L (Flash
µ
-com writing port)
100
NC
O
Output : L
MICROCOMPUTER’S TERMINAL DESCRIPTION