CDP-XE210, CDP-XE310 - Sony Audio Service Manual (repair manual). Page 11

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6-8. IC PIN FUNCTION
• IC501 CXP82612-021Q (MASTER CONTROL)
Pin No.
Pin Name
I/O
Function
1
+5V (TIMER)
Connected to +5V
2
RM (BUS 1N)
I
Audio bus input
3
+5V
Connected to +5V
4
OPEN
Not used
5
OPEN
Not used
6
(BUSOUT)
Not used
7
PGML
O
Latch signal output to digital filter (IC201)
8
CLK
O
Serial clock output
9
SENSE
I
SENSE signal input
10
DATA
O
Serial data output
11
SQCK
O
Read out clock output for subcode Q data
12
SUBQ
I
Subcode Q data input
13
OPEN
Not used
14
AMUTE
O
Analog muting control signal output
15
LDON
O
Optical pick-up laser diode control output
16
XLT
O
Serial data latch signal output
17
RVLED
Not used
18
RV+
Not used
19
RV–
Not used
20
LDOUT
O
Loading motor control signal output
21
LDIN
I
Loading motor control signal input
22
KEY0
I
Key input (S503)
23
KEY1
I
Key input (S520-S527)
24
KEY2
I
Key input (S501-S503)
25
KEY3
Not used
(Fixed at “H”)
26,27
KEY4,KEY5
I
Key input (S531)
28
ADJ/AFADJ
ADJ/AFJ test pin
29
IN/OUTSW
I
Loading IN/OUT switch input
30
RST
I
Reset signal input
31
EXTAL
I
Clock input (4MHz)
32
XTAL
O
Clock output (4MHz)
33
VSS
Ground
34-41
OPEN
Not used
42-62
S21-S1
O
FL segment output
63-67
1G-5G
O
FL grid output
68
OPEN
Not used
69,70
6G, 7G
O
FL grid output
71
–30V (VFDP)
–30V power supply for FL display tube
72
+5V (VDD)
+5V power supply
73
+5V
+5V power supply
74
GND
Ground
75
Not used
(Fixed at “H”)
76
HI-Z
Not used
(Fixed at “H”)
77
Not used
(Fixed at “H”)
78
SCOR
I
Read out timing signal input for subcode Q data
79,80
+5V
Connected to +5V
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