Read Sony HCD-N555AVK / LBT-N555AVK Service Manual online
— 18 —
5-2. IC PIN FUNCTIONS
• IC501 GRAPHIC CONTROL (ASD0204)
Function
I/O
Pin Name
Pin No.
V
DD
LED8
LDE7, 6
LED5–1
RESET
X2
X1
IC (Vpp)
XT2
JOG B
V
DD
LED10, 9
KEY SEL
VOL B
REQ. GM
CLK MG
DATA GM
DATA MG
AV
SS
SPEANA 4–1
KEY 4–1
AV
DD
AV
REF
VOL A
JOG A
RDY MG
SIRCS
V
SS
DOR SW
LED SELECT
LED13–11
V
DD
LEDS7, 6
LEDS5, 4
LEDS3–1
SEG32–8
V, LOAD
SEG7–1
GR14–1
–
O
O
O
I
O
I
–
I
I
–
O
O
I
O
I
O
I
–
I
I
–
–
I
I
I
I
–
I
O
O
–
O
O
O
O
–
O
O
+5V
LED drive signal output.
LED drive signal output.
LED drive signal output.
Reset signal input.
X’ tal (4 MHz).
GND
Not used.
AMS encoder signal input.
+5V
LED drive signal output.
Key select control.
Volume encoder signal input.
Request signal from/to master control.
Serial clock input.
Serial data output.
Serial data input.
GND
Spectram analizer signal input.
Key matrix input.
+5V
Volume encoder signal input.
AMS encoder signal input.
Ready signal from master control.
SIRCS signal input.
GND
CD door open detection input.
LED select signal output.
LED drive signal output.
+5V
Not used.
LED drive signal output.
LED drive signal output.
FL segment signal output.
–25V for FL
FL segment signal output.
FL grid signal output.
• Abbreviation
FL: Fluorescent Indicator Tube
GND: Ground
GND: Ground
1
2
3, 4
5-9
10
11
12
13
14
15
16
17, 18
19
20
21
22
23
24
25
26-29
30-33
34
35
36
37
38
39
40
41
42
43-45
46
47, 48
49, 50
51-53
54-78
79
80-86
87-100
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