Read Sony MEX-BT2500 Service Manual online
37
MEX-BT2500
Pin No.
Pin Name
I/O
Description
58
UNISI
I
Serial data input from the CD section
59
UNISO
O
Serial data output to the CD section
60
UNISCK
O
Serial data transfer clock signal output to the CD section
61
Z-MUTE
I
Muting on/off control signal input from the CD section
62
NOSESW
I
Front panel remove/attach detection signal input terminal "L": front panel is attached
63
FLASH_W
I
Flash writing mode detection signal input terminal "L": flash writing mode
64
SIRCS
I
Remote control signal input from the remote control receiver
65
BT_PLAY
O
Key signal output to the bluetooth section
66 to 69
BT_STATUS0 to
BT_STATUS3
I
Status input from the bluetooth section
70
BT_MUTE
I
Muting on/off control signal input from the bluetooth section
71
NCO
-
Not used
72
BT_TEST1
O
Test mode setting terminal for the bluetooth test mode 1
73
BT_TEST2
O
Test mode setting terminal for the bluetooth test mode 2
74
BT_FR
O
Key signal output to the bluetooth section
75
BT_FF
O
Key signal output to the bluetooth section
76
NCO
-
Not used
77
RESET
I
System reset signal input from the reset signal generator and reset switch "L": reset
78
NCO
-
Not used
79
XOUT
O
Sub system clock output terminal (32.768 kHz)
80
XIN
I
Sub system clock input terminal (32.768 kHz)
81
VSS1
-
Ground terminal
82
OSCIN
I
Main system clock input terminal (18.432 MHz)
83
OSCOUT
O
Main system clock output terminal (18.432 MHz)
84
VCC3
-
Power supply terminal (+3.3V)
85
CYRIL_SEL
I
Cyrillic letter response setting terminal "H": corresponds to cyrillic letter
86
DEMOSEL
I
Demo play setting terminal "H": demo play on
87
NCO
-
Not used
88
SYSRST
O
Reset signal output to the CD section
89
BT_STATUS_
POW
I
Power supply status input from the bluetooth section "H": bluetooth power on
90
BT_OPRPOW
O
Key signal output to the bluetooth section
91
CDON
I
CD servo power supply control request input terminal
92
CDMON
I
CD mecha power supply control request input terminal
93
BT_MFUNC
O
Key signal output to the bluetooth section
94
BT_RESET
O
Reset signal output to the bluetooth section "L": reset
95
BT_POWER_
CTRL
O
Power on/off control signal output terminal for the bluetooth section
96
BUSON
O
SONY bus on/off control signal output terminal "L": bus on
97
TESTIN
I
Test mode setting terminal "H": test mode
98
TELATT
I
Telephone muting detection signal input terminal
At input of "H", the audio signal is attenuated by 20 dB
At input of "H", the audio signal is attenuated by 20 dB
99
ACCIN
I
Accessory power detection signal input terminal "L": accessory power on
100
ATT
O
Muting on/off control signal output terminal
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