KCA-HF521
3
MICROCOMPUTER'S TERMINAL DESCRIPTION
q SYSTEM µ-COM uPD780058 (IC11 : X32)
Pin No.
Pin name
I/O
Description
Processing Operation
1-3
NC
O
Not used
4
AVSS
O
D/A, A/D Ground terminal
5, 6
NC
O
Not used
7
AVREF1
O
D/A Standard voltage input terminal
8
RX
I
Communication line with MAIN (reception)
9
TX
O
Communication line with MAIN (transmission)
10
NC
O
Not used
11
DATAH0
I
Data input from H/U
12
DATAC0
O
Data output to H/U
13
HCLK0
I/O
Clock input from H/U
14
REQC0
O
Communication request to H/U
15
NC
O
Not used
16
DATAC1
I
Data input from CD-CH
17
DATAH1
O
Data output to CD-CH
18
HCLK1
I/O
Clock output to CD-CH
19
REQH1
O
Communication request to CD-CH
20
CHCONO1
O
CD-CH system output
21
RELAY1
O
Relay control
H : OPEN
L : connect
22
RELAY2
O
Relay control
H : CD-CH
L : HF
23
NC
O
Not used
24
DSPRST
O
DPS chip reset output
H : reset
25
P-DWN
O
DSP chip power supply control line
H : power down
26
MUTE
O
5L mute control line
27
PON
O
Power supply control line
H : ON
L : OFF
28
RSOUT
O
Reset output to the CPU
H : reset
29
STBY
O
Not used
30
LED0
O
LED0
L : ON
31
LED1
O
LED1
L : ON
32
LED2
O
LED2
L : ON
33
VSS1
-
Ground terminal
34-58
NC
O
Not used
59
PON2
O
Power supply control line
H : P-on
L : P-off
60
RESET
I
System reset input terminal
L : reset
61
REQH0
I
Communication request input from H/U
62
BUDET
I
Moment decrease voltage detection input
63, 64
NC
O
Not used
65
REQC1
I
Communication request input from CD-CH
66
CHCON1
I
CD-CH system input from H/U
67
VSS0
-
Ground terminal in the port part
68
VDD1
-
Power supply supply terminal (5V)
69
X2
-
Crystal connection terminal for the main system clock
70
X1
I
Crystal connection terminal for the main system clock
71
VPP
-
Inner connection terminal
72, 73
NC
O
Not used
74
VDD0
-
Positive power supply input terminal in the port part
75
AVREF0
-
A/D standard voltage input terminal
76-80
NC
O
Not used
