Read Sony MEX-BT3900U / MEX-BT3950U / MEX-BT39UW Service Manual online
MEX-BT39UW/BT3900U/BT3950U
34
Pin No.
Pin Name
I/O
Description
59
DIAG
I
Diagnostic signal input from the power amplifi er
60
AMPSTB
O
Standby control signal output to the power amplifi er
61
CYRIL_SEL
I
Cyrillic letter response setting terminal “H”: corresponds to Cyrillic letter
Fixed at “L” in this set
Fixed at “L” in this set
62
VCC2
―
Power supply terminal (+3.3V)
63
NCO
O
Not used
64
VSS
―
Ground terminal
65
ILLUMI SEL
I
Illumination voltage setting terminal “L”: 9.0V, “H”: 10.4V
66
COLSW SEL
I
Setting terminal for the key illumination color “L”: 2color, “H”: 1color
67
BT_MUTE
I
Muting on/off control signal input from the Bluetooth section
68
B-OUT SEL
I
Blackout setting terminal “H”: blackout effective (BT3950U only), Other models is “L”
69 to 72
AREASEL3 to
AREASEL0
I
Destination setting terminal
73
R/S SW SEL
I
REAR/SUB select setting signal input terminal “L”: No switched
74, 75
NCO
O
Not used
76
INITCOL_SEL
I
Key illumination initial color setting signal input terminal
77
BT_TX
O
Serial data output to the Bluetooth section
78
BT_RX
I
Serial data input from the Bluetooth section
79, 80
DEBUG_1, DEBUG_2
O
Not used
81, 82
RE-IN1, RE-IN0
I
Jog dial pulse input from the rotary encoder
83
NCO
O
Not used
84
BT_RTS
O
RTS control signal output to the Bluetooth section
85
BT_CTS
I
CTS control signal input from the Bluetooth section
86
BT_RESET
O
Reset signal output to the Bluetooth section “L”: reset
87
BT_POWER
O
Power on/off control signal output to the Bluetooth section
88
BT_MIC_DET
I
Microphone detection signal input terminal for the MIC IN jack
“L”: MIC is disconnected, “H”: MIC is connected
“L”: MIC is disconnected, “H”: MIC is connected
89, 90
NCO
O
Not used
91
KEYACK0
I
Acknowledge signal (wake up signal) input terminal for the rotary remote commander
92
KEYACK1
I
Acknowledge signal (wake up signal) input terminal for the front panel key
93
NCO
O
Not used
94, 95
KEYIN1, KEYIN0
I
Front panel key input terminal
96
AVSS
―
Ground terminal (for A/D converter)
97
RC_IN0
I
Rotary remote commander shift key input terminal
98
AVRH
I
Reference voltage (+3.3V) input terminal (for A/D converter)
99
AVDD
―
Power supply terminal (+3.3V) (for A/D converter)
100
LCD_CE
O
Chip enable signal output to the LCD driver
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