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AT73C240
3. Pin Description
Table 3-1.
Pin Description
Pin Name
VREF
AVDD
HSL
HSR
AVDDHS
LINEL
LINER
INGND
VCM
NC
HPN
VBAT
HPP
CBP
PAINN
PAINP
SDIN
BCLK
LRFS
MCLK
RSTB
SMODE
GNDD
VDIG
SPI_DOUT
SPI_DIN/TWD
SPI_CLK/TWCK
SPI_CSB/TW_ADD
MONON
MONOP
NC
NC
GNDA
I/O
I
I
O
O
I
I
I
I
I
N/A
O
I
O
O
I
I
I
I
I
I
I
I
GND
I
O
I/O
I
I
O
O
N/A
N/A
GND
Pin
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 (Bottom)
Type
Analog
Supply
Analog
Analog
Supply
Analog
Analog
Analog
Analog
N/A
Analog
Supply
Analog
Analog
Analog
Analog
Digital
Digital
Digital
Digital
Digital
Digital
Ground
Supply
Digital
Digital
Digital
Digital
Analog
Analog
N/A
N/A
Ground
Function
Voltage reference pin for decoupling
Analog supply (DAC + Line in + Mono out)
Left channel headset driver output
Right channel headset driver output
Headset driver analog supply
Left channel line in
Right channel line in
Line signal ground pin for decoupling
Common mode reference for decoupling
Not Connected
Negative speaker output
Audio amplifier supply
Positive speaker output
Audio amplifier common mode voltage decoupling
Audio amplifier negative input
Audio amplifier positive input
Audio interface serial data input
Audio interface bit clock
Audio interface left/right channel synchronization frame pulse
Audio interface master clock input
Master reset (active low)
Serial interface selection (to connect to ground)
Digital ground
Digital supply
SPI data output
SPI data input / TWI data input
SPI clock / TWI clock
SPI chip select / TWI address bit
Negative monaural driver output
Positive monaural driver output
Not Connected
Not Connected
Analog ground
3
6464A–PMAAC–28-Apr-09
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