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Sony MEX-BT2707E Service Manual Page 33

Bluetooth audio system.
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• IC Pin Function Description
MAIN BOARD IC501 R5F3640DDA01FA (SYSTEM CONTROLLER)
Pin No.
Pin Name
1
2
LCD_CKO
3
NOSE_SW
4
5
6
7
8
9
10
11
12
13
OSCOUT
14
15
16
17
18
19
20
CDM_ON
21
22
BT_TEST1
TE
L 13942296513
23
BT_TEST2
24
BT_INT-HF
25
26
BT_PLAY
27
28
29
I2C_SCK
30
31
32
FW_RXD
33
BT_STATUS0
34
FW_BUSY
BT_STATUS1 to
35 to 37
BT_STATUS3
38
BT_MUTE
39
40
41
42
43
44
45
BT_MICPWR
46
www
47
BT_PWRCTRL
48
BT_OPRPOW
49
BT_MFUNC
.
50
BT_STAPWR
51
BT_RESET
52
http://www.xiaoyu163.com
I/O
LCD_SO
O
Serial data output to the liquid crystal display driver
O
Serial data transfer clock signal output to the liquid crystal display driver
I
Front panel remove/attach detection signal input terminal
SIRCS
I
Remote control signal input from the remote control receiver
UNISO
O
SONY bus data output to the bus interface
UNISI
I
SONY bus data input from the bus interface
UNISCK
O
SONY bus clock signal output to the bus interface
BYTE
I
Connect to ground (Pull down)
CNVSS
I
Flash write signal input terminal
XIN
I
Sub system clock input terminal (32.678 kHz)
XOUT
O
Sub system clock output terminal (32.678 kHz)
RESET
I
System reset signal input from the reset signal generator and reset switch
O
Main system clock output terminal (11.08 MHz)
VSS
-
Ground terminal
OSCIN
I
Main system clock input terminal (11.08 MHz)
VCC1
-
Power supply terminal (+3.3V)
NMI
-
Not used
Synchronize detection signal input of RDS data block
DAVN
I
(BT2700: AEP, Italian, UK/BT2707E models only)
BUIN
I
Back up power supply detection signal input terminal
I
CD mechanism power supply control request signal input terminal
Z-MUTE
I
Muting on/off control signal input from the CD section
O
Bluetooth section test mode (1) control signal output terminal
O
Bluetooth section test mode (2) control signal output terminal
I
HF operation notifi cation signal input from the Bluetooth section
CVC selection request signal output to the Bluetooth section
BT_CVC
O
"L": internal microphone CVC, "H": external microphone CVC
O
Key signal output to the Bluetooth section
NCO
-
Not used
BEEP
O
Beep sound drive signal output to the power amplifi er
O
IIC serial clock signal output terminal
I2C_SIO
I/O
IIC two-way serial data bus terminal
FW_TXD
O
Flash write interface serial data signal output terminal
I
Flash write interface serial data signal input terminal
FW_CLK
I
Flash write interface serial clock signal input terminal
I
Status input from the Bluetooth section
I
Status input from the Bluetooth section
I
Muting on/off control signal input from the Bluetooth section
BT_FR
O
Key signal output to the Bluetooth section
BT_FF
O
Key signal output to the Bluetooth section
EPM
I
EPM signal output terminal (fi xed at "L")
RC_IN1
I
Rotary remote commander shift key input terminal
SYSRST
O
Reset signal output to the CD section
BUSON
O
SONY bus on/off control signal output to the bus interface
O
Microphone power on/off control signal output to the Bluetooth section
CE
-
Not used
O
Main power on/off control signal output terminal of the Bluetooth section
O
Key signal output to the Bluetooth section
x
ao
y
O
Key signal output to the Bluetooth section
i
I
Power supply status input from the Bluetooth section
O
Reset signal output to the Bluetooth section
CD_ON
I
CD servo power supply control request signal input terminal
http://www.xiaoyu163.com
8
Normally operation: "L", Flash write: "H"
Q Q
3
6 7
1 3
u163
.
MEX-BT2700/BT2707E/BT2750
2 9
9 4
2 8
Description
"L": front panel is attached
"L" is input at low voltage
"H": muting on
1 5
0 5
8
2 9
9 4
"H" active
m
co
"H": Bluetooth power on
"L": reset
9 9
"L": reset
2 8
9 9
"L": power on
"H": power on
33

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