Read Sony HT-CT550W / STR-CT550WT Service Manual online
STR-CT550WT
46
Pin No.
Pin Name
I/O
Description
61
P_CONT3
O
Power supply on/off control signal output terminal for the fl uorescent indicator tube
“H”: power on
“H”: power on
62
Vcc2
-
Power supply terminal (+3.3V)
63
N.A
O
Not used
64
Vss
-
Ground terminal
65, 66
P_CONT2, P_CONT1
O
Power supply on/off control signal output terminal “H”: power on
67
S-AIR GPIO2
O
Interrupt signal output to the wireless transceiver
68
DSP_INTR
I
Interrupt request signal input from the DSP
69
DAMP_SOFT_MUTE
O
Soft muting on/off control signal output to stream processor “L”: muting on
70
DAMP_INIT
O
Reset signal output to the stream processor “L”: reset
71
DAMP_LATCH1
O
Serial data latch pulse signal output to the stream processor
72
DAMP_LATCH3
O
Serial data latch pulse signal output terminal Not used
73
AC_CUT
I
AC cut detection signal input terminal “L”: AC cut is detected
74
KEY_INT
I
Key wake-up signal input terminal
75
RDS INT/CLK
I
RDS interrupt signal input from the FM receiver
76
DC_DET
I
Speaker DC detection signal input terminal “L”: speaker DC is detected
77
FL_DATA
O
Serial data output to the fl uorescent indicator tube
78
FL_CS
O
Chip select signal output to the fl uorescent indicator tube
79
FL_CLK
O
Serial data transfer clock signal output to the fl uorescent indicator tube
80
OVERFLOW2
I
Overfl ow detection signal input from the stream processor
81
DRIVE_RST(EN)
O
Reset signal output to the power amplifi er “L”: reset
82
DAMP_NSP_MUTE
O
NSP muting on/off control signal output terminal Not used
83
HDMI_RESET
O
Reset signal output to the HDMI controller “L”: reset
84
P_CONT_HDMI
O
Power on/off control signal output terminal for the HDMI section “H”: power on
85
OVERFLOW1
I
Overfl ow detection signal input from the stream processor
86
P_LINK_SW
O
Not used
87
P_CONT_MAIN
O
Power supply on/off control signal output terminal “H”: power on
88
S-AIR Reservd1
O
Not used
89
S-AIR_RST
O
Reset signal output to the wireless transceiver “L”: reset
90
S-AIR_DET
I
Wireless transceiver connection detection signal input terminal
“L”: wireless transceiver is connected
“L”: wireless transceiver is connected
91
S-AIR_RF
I
RF signal input from the wireless transceiver
92
DESTINATION
I
Destination setting terminal
93
MODEL
I
Model setting terminal
94, 95
KEY2, KEY1
I
Front panel key input terminal (A/D input)
96
AVss
-
Ground terminal
97
KEY0
I
Front panel key input terminal (A/D input)
98
Vref
I
Reference voltage (+3.3V) input terminal
99
AVcc
-
Power supply terminal (+3.3V)
100
DIR_DO
I
Serial data input from the digital audio interface receiver
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