SRS-BTV25 - Sony Audio Service Manual (repair manual). Page 28

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SRS-BTV25
28
•  IC Pin Function Description
MAIN  BOARD  IC101  R5F364A6DFB (SYSTEM  CONTROLLER)
Pin No.
Pin Name
I/O
Description
1 to 5
NO USE
-
Not used
6
BYTE
I
External data bus width selection signal input terminal    Fixed at “L” in this unit
7
CNVSS
I
Processor mode selection signal input terminal
8, 9
NO USE
-
Not used
10
RESET
I
System reset signal input from the reset switch    “L”: reset
11
XO
O
System clock output terminal (8 MHz) 
12
VSS
-
Ground terminal
13
XI
I
System clock input terminal (8 MHz)
14
VCC1
-
Power supply terminal (+3.3V)
15
NO USE
-
Not used
16
AC CUT
I
AC cut detection signal input from the voltage detect IC
17
VBUS_OCP_DET
I
VBUS over current detection signal input terminal
18
BT_MUTE
I
Muting on/off control signal input from the bluetooth section
19 to 28
NO USE
-
Not used
29
TXD1
O
Serial data output terminal for fl ash writing
30
RXD1
I
Serial data input terminal for fl ash writing
31
CLK1
O
Serial data transfer clock signal output terminal for fl ash writing
32
BT_CTS
I
Clear to send signal input from the bluetooth section
33
BT_TXD
O
Serial data output to the bluetooth section
34
BT_RXD
I
Serial data input from the bluetooth section
35
BT_RESET
O
System reset signal output to the bluetooth section
36
BT_RTS
O
Request to send signal output to the bluetooth section
37
BT_CTL_PWR
O
Power on/off control signal output terminal for the bluetooth function
38
NO USE
-
Not used
39
EPM
O
EPM signal output terminal for fl ash writing    Fixed at “L” in this unit
40 to 43
NO USE
-
Not used
44
CE
O
Chip enable signal output terminal for fl ash writing    Fixed at “H” in this unit
45
DAMP_SDA
I/O
Serial data input/output with the power amplifi er
46
DAMP_SCL
I/O
Serial data transfer clock signal input/output with the power amplifi er
47
DAMP_RESET
O
System reset signal output to the power amplifi er
48
DAMP_PDN
O
Power down signal output to the power amplifi er    “L”: power down
49
CTL_V5A
O
Power on/off control signal output terminal for the audio function
50
AUDIO_DET
I
Audio level detection signal input from level detect IC
51 to 56
NO USE
-
Not used
57
DA_DZF
-
Not used
58
NO USE
-
Not used
59
INPUT SEL
O
Audio source selection signal output to input select IC
60
VCC2
-
Power supply terminal (+3.3V)
61
NO USE
-
Not used
62
VSS
-
Ground terminal
63 to 69
NO USE
-
Not used
70
CTL_PWR
O
Power on/off control signal output terminal for the power amplifi er
71
DAMP_FAULT
I
Fault signal input from the power amplifi er    “L”: fault
72
DC_DET (PROTECT)
I
DC detection signal input terminal
73
KEY_PWR
I
Power key input terminal
74 to 82
NO USE
-
Not used
83
LED PWR
O
LED drive signal output terminal for POWER indicator LED    “H”: LED on
84
LED BT
O
LED drive signal output terminal for bluetooth indicator LED    “H”: LED on
85
LED BASS
O
LED drive signal output terminal for BOOST indicator LED    “H”: LED on
86
LED AUDIO
O
LED drive signal output terminal for AUDIO IN indicator LED    “H”: LED on
87 to 89
NO USE
-
Not used
90
KEY_1 (PWR/VOL+–)
I
Top panel key input terminal (A/D input)
91
KEY_2 (BT)
I
Top panel key input terminal (A/D input)
92
KEY_3 (BASS/PLAY)
I
Top panel key input terminal (A/D input)
93
DESTINATION
I
Destination setting signal input terminal
94
AVSS
-
Ground terminal
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