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BU8732AKV
Communication ICs
z
Pin descriptions
4/10
Pin No.
Pin name
Terminal function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
REXTDI
REXTDO
EXTO
RIN
AUDO
AUDVR
ERPN
ERPO
SPPN
SPPO
SPCOP
SPCON
RXV
SS
EARO
RXV
DD
SMUTE
RXREF
CODCREF
REFC
TXREF
TXV
SS
MIC1IP
MIC1IN
MIC1O
MIC2IN
MIC2O
TAUDO
TXV
DD
TEXTADD
TEXTDI
TEXTDO
PLLLPF
FSYNC
STB
SCL
SDA
XPRSTB
DV
SS
DV
DD
PCMOUT
PCMIN
DCLK
I / O
I / O
I / O
O
I
O
O
I
O
I
O
O
O
O
I
O
O
O
O
I
I
O
I
O
O
I
I / O
I / O
I / O
I
I
I / O
I / O
I
O
I
I
50p
50p
50p
50p
0.22
μ
1
1
μ
1
1
μ
1
2.2
μ
1
1
μ
1
50p
50p
50p
0.01
μ
1
600
50k
50k
50k
50k
30(BTL)
30(BTL)
30
50k
50k
50k
Input of the data signal of receive
Output of the data signal of receive
Amplifier output for the gain adjustment of receive signal
Direct input of the voice of receive
Direct output of receive signal
External output of receive signal
Inverted amplifier input for the earphone gain adjustment
Amplifier output for the earphone gain adjustment
Inverted amplifier input for the speaker gain adjustment
Amplifier output for the speaker gain adjustment
Non-ineverted speaker amplifier output for the receiver
Inverted speaker amplifier output for the receiver
Analog grounding for the receive
Speaker amplifier output for the earphone
Analog power source for the receive
Time constant terminal for the soft mute setting
Analog reference voltage output for the receive
Analog reference voltage output for codec
Analog reference voltage output
Analog reference voltage output for the transmit
Analog grounding for the transmit
Non-inverted input of the microphone amplifier 1
Inverted input of the microphone amplifier 1
Output of microphone amplifier 1
Inverted input of the microphone amplifier 2
Output of microphone amplifier 2 output
External output of transmit signal
Analog power source for the transmit
Additive input of the transmit signal
Input of the data signal of transmit
Output of the data signal of transmit
Filter connection input/output for PLL
PLL reference clock input
Strobe input for CPU I/F
Shift clock input for CPU I/F
Address data input for CPU I/F
System reset input (L
:
reset)
Grounding for digital
Power supply for digital
Output of PCM signal
Input of PCM signal
Shift clock input for PCM signal
1 Standard value
resistance
[]
capacitance
[
F
]