Sony MEX-BT5000 Service Manual page 62

MEX-BT5000
MAIN BOARD IC501 MB90F488BPFV-G-9012-SPE1 (SYSTEM CONTROLLER)
Pin No.
Pin Name
1 NC
2
VOL_ATT
3
NOSE_SW
4
NC
5
BEEP
6
DIAG
7
IT_FSW_IN
8
FSW_IN
9
VSS
10
TUNATT
11, 12
NC
SIGNAL_SW0,
13, 14
SIGNAL_SW1
15
NC
16
AUX_BUS
17
NSMASK
18
GUI_RST
19
ATT
20
SYSRST
21 VCC5
22
EESIO
23
EECKO
24
AMPSTB
25 GUI_RX
26
GUI_TX
27
MAS_PW
28
GUI_PW
RE_IN0,
29, 30
RE_IN1
31 I2CCKO
32
I2CSIO
33 AVCC
34
AVRH
35
AVSS
36
QUALITY
37
VSM
38 NC
39
KEYIN0
40 VSS
41
RC_IN0
42 to 46
NC
47 to 49
MD0 to MD2
62
I/O
- Not used
O Muting on/off control signal output to the audio select "L": muting on
Front panel remove/attach detection signal input terminal
I
"L": front panel is attached
- Not used
O Beep sound drive signal output terminal
I Diagnostic signal input from the power amplifier IC
I DC/DC converter oscillation frequency count input terminal for bluetooth section
I DC/DC converter oscillation frequency count input terminal for fluorescent indicator tube section
- Ground terminal
O Tuner muting on/off control signal output terminal
- Not used
O Audio signal output select signal output terminal
- Not used
Ground switching signal output of SONY bus/AUX audio input
O
"L": AUX input, "H": SONY bus input
Discharge control signal output for the noise detection circuit
O
"H": discharge (AEP, UK models only)
O Reset signal output to the bluetooth controller, data bus interface and flash rom
O Muting on/off control signal output terminal
O Reset signal output to the SONY bus interface IC and CD system control
- Power supply terminal (+3.3V)
I/O Two-way data bus with the tuner unit
O Serial data transfer clock signal output to the tuner unit
O Standby control signal output to the power amplifier IC
I Serial data input from the bluetooth controller
O Serial data output to the bluetooth controller
O State notification signal output to the bluetooth controller "H": state that can be communicated
I State notification signal input from the bluetooth controller "H": state that can be communicated
I Joystick pulse input from the rotary encoder
O IIC data transfer clock signal output terminal
I/O IIC two-way data bus
- Power supply terminal (+3.3V)
I Reference voltage (+3.3V) input terminal (for A/D conversion)
- Ground terminal
I Noise level detection signal input at SEEK mode
I FM and AM signal-meter voltage detection signal input from the tuner unit (A/D input)
- Not used
I Front panel key input terminal (A/D input)
- Ground terminal
I Rotary remote commander key input terminal (A/D input)
- Not used
I Setting terminal for the CPU operational mode
Description