Read Sony SA-WCT180 Service Manual online
SA-WCT180
SA-WCT180
20
20
• IC Block Diagrams
– MAIN Board –
U2 EUP3482ADIR1
U2 EUP3482ADIR1
– POWER Board –
U531 TOP256EN
U531 TOP256EN
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• IC Pin Function Description
MAIN BOARD U6 STA369BWS (DIGITAL AMP)
Pin No.
Pin Name
I/O
Description
1
GND_SUB
-
Ground terminal
2
SA
I
I2C select address signal input terminal Fixed at “H” in this unit
3
TEST_MODE
I
Fixed at “L” in this unit
4
VSS
I/O
Internal reference voltage (–3.3V) input/output terminal
5
VCC_REG
I/O
Internal reference voltage input/output terminal
6
OUT2B
O
Audio signal (subwoofer) output terminal
7
GND2
-
Ground terminal
8
VCC2
-
Power supply terminal
9
OUT2A
O
Audio signal (subwoofer) output terminal
10
OUT1B
O
Audio signal (subwoofer) output terminal
11
VCC1
-
Power supply terminal
12
GND1
-
Ground terminal
13
OUT1A
O
Audio signal (subwoofer) output terminal
14
GND_REG
-
Internal reference ground terminal
15
VDD
I
Internal reference voltage (+3.3V) input terminal
16
CONFIG
I
Parallel mode command signal input terminal Fixed at “H” in this unit
17
OUT3B/FFX3B
O
Not used
18
OUT3A/FFX3A
O
Not used
19
EPAD/OUT4B
O
Not used
20
TWARN/OUT4A
I/O
Not used
21
VDD_DIG
-
Power supply terminal (+3.3V)
22
GND_DIG
-
Ground terminal
23
PWRDN
I
Muting signal input terminal
24
VDD_PLL
-
Power supply terminal (+3.3V) (for PLL)
25
FILTER_PLL
I
Connection to PLL fi lter terminal
26
GND_PLL
-
Ground terminal (for PLL)
27
XTI
I
Master clock signal input terminal
28
BICKI
I
Bit clock signal input terminal
29
LRCKI
I
L/R sampling clock signal input terminal
30
SDI
I
Audio data (subwoofer) input terminal
31
RESET
I
Reset signal input terminal
32
INT_LINE
O
Fault signal output terminal
33
SDA
I
Serial data input terminal
34
SCL
I
Clock signal input terminal
35
GND_DIG
-
Ground terminal
36
VDD_DIG
-
Power supply terminal (+3.3V)
37
GND
-
Ground terminal
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