Ic Pin Functions; Ic500 Graphic Control (Asd0204) - Sony HCD-H991AV Service Manual

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6-22. IC PIN FUNCTIONS

• IC500 GRAPHIC CONTROL (ASD0204)

Pin No. Pin Name
1
V
DD
2 to 9
LED8-1
10
RESET
11
X2
12
X1
13
IC (Vpp)
14
XT2
15
JOG B
16
V
DD
17, 18
LED10, 9
19
KEY SEL
20
VOL B
21
REQ. GM
22
CLK MG
23
DATA GM
24
DATA MG
25
AV
SS
26 to 29
SPEANA 4–1
30 to 33
KEY 4–1
34
AV
DD
35
AV
REF
36
VOL A
37
JOG A
38
RDY MG
39
SIRCS
40
V
SS
41
LED 15
42
LED SELECT
43 to 45
LED13–11
46
V
DD
47 to 50
LEDS7–4
51 to 53
LEDS3–1
54 to 78
SEG32–8
79
V, LOAD
80 to 86
SEG7–1
87 to 100
GR14–1
It`s free
I/O
–
+5V
O
LED drive signal output.
I
Reset signal input.
O
X' tal (5 MHz).
I
– Ground
I
Not used. (Open)
I AMS encoder signal input.
–
+5V
O
LED drive signal output.
O
Key select control. (Not used) (Open)
I Volume encoder signal input.
O
Request signal from/to master control.
I Serial clock input from master control.
O
Serial data output to master control.
I
Serial data input from master control.
–
Ground
I
Spectram analizer signal input.
I
Key matrix input.
–
+5V
–
I Volume encoder signal input.
I AMS encoder signal input.
I Ready signal from master control.
SIRCS signal input.
I
– Ground
LED drive signal output.
O
O LED select signal output.
O LED drive signal output.
– +5V
Not used.
O
O LED drive signal output.
Fluorescent indicator tube segment signal output.
O
– –25V for Fluorescent indicator tube
Fluorescent indicator tube segment signal output.
O
O Fluorescent indicator tube grid signal output.
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Function