Ic Pin Functions; Ic501 Graphic Control (Asd0204) - Sony HCD-D670AV - Compact Disk Deck Receiver Service Manual

5-2. IC PIN FUNCTIONS

• IC501 GRAPHIC CONTROL (ASD0204)

Pin No. Pin Name
1 V
DD
2 LED8
3, 4 LDE7, 6
5-9 LED5–1
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
26-29 SPEANA 4–1
30-33 KEY 4–1
34 AV
DD
35 AV
REF
36 VOL A
37 JOG A
38
RDY MG
39
SIRCS
40 V
SS
41 DOR SW
42 LED SELECT
43-45 LED13–11
46 V
DD
47, 48 LEDS7, 6
49, 50 LEDS5, 4
51-53
LEDS3–1
54-78
SEG32–8
79 V, LOAD
80-86 SEG7–1
87-100 GR14–1
• Abbreviation
FL: Fluorescent Indicator Tube
GND: Ground
I/O
– +5V
O LED drive signal output.
O LED drive signal output.
O LED drive signal output.
I Reset signal input.
O
X' tal (4 MHz).
I
GND
–
I Not used.
I AMS encoder signal input.
– +5V
O LED drive signal output.
O Key select control.
I Volume encoder signal input.
O Request signal from/to master control.
Serial clock input.
I
Serial data output.
O
I Serial data input.
– GND
I Spectram analizer signal input.
I Key matrix input.
–
+5V
–
I Volume encoder signal input.
I AMS encoder signal input.
Ready signal from master control.
I
SIRCS signal input.
I
– GND
I CD door open detection input.
O LED select signal output.
O LED drive signal output.
– +5V
O Not used.
O Not used. (Pull down)
LED drive signal output.
O
FL segment signal output.
O
– –25V for FL
O FL segment signal output.
O FL grid signal output.
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Function