– 96 –
• IC601 DISPLAY CONTROL ( TMP87CM74AF)
Pin No.
Pin Name
I/O
Function
1 to 6
LED3 to LED8
O
LED driver output
7
VSS
–
Ground
8
X OUT
O
9
X IN
I
10
RESET
I
Reset signal input from main controller
11
LED9
O
12
LED10
O
13
TEST
I
Connected ground
14 to 18
LED11 to LED15
O
LED driver output
19
VOL A
I
20
VOL B
I
21
JOG A
I
22
JOG B
I
23
SCL
O
Serial clock input from master controller
24
SDA
O
Serial data input from master controller
25
L. SEL
O
LED select signal output
26 to 29
KEY 0 to KEY 3
I
Key input
30
MODEL
I
Version select signal input
31
(LED 16 OPEN)
–
LED driver output (Not used)
32
L + R
I
Spectrum analyzer (high frequency) input
33
SIRCS
I
Remote commander signal input
34 to 37
SPEANA 1 to SPEANA 4
I
Spectrum analyzer input
38
VASS
–
Ground
39
VAREF
I
Analog reference voltage input
40
VDD
–
Power supply (+5V)
41 to 53
GR 1 to GR13
O
FL gride signal output
54 to 77
SEG 1 to SEG 24
O
FL segment signal output
78
VKK
–
Power supply (–25V) for FL segment signal output
79
LED 1
O
80
LED 2
O
X’tall (8MHz)
• Abbreviation
FL : Fluorescent indicator tube
LED driver output
Rotary encoder (S602) pulse input
Rotaly encoder (S601) pulse input
LED driver output
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