BM28723AMUV
I/O Equivalence Circuits
Caution: The numerical value of I/O equivalence circuit is typical value, not guaranteed.
Pin
No.
1
Pin
Voltage
0V
Pin Name
ADDR
Pin Explanation
I/O Equivalence Circuit
2 wire Bus control slave address select pin
10
Select LSB data of slave address for 2 wire Bus
control.
Input High level to set LSB=1.
Input Low level to set LSB=0.
1
Select pull-down resistor after DVDD is applied.
8
2
BCLK
3.3V
3.3V
Digital audio signal input pin
10
Input bit clock of digital audio signal.
Select pull-up resistor after DVDD is applied.
2
8
3
4
LRCLK
SDATA
Digital audio signal input pin
10
Input LR clock of digital audio signal to LRCLK.
Input data of digital audio signal to SDATA.
Select pull-up resistor after DVDD is applied.
3,4
8
5
9
11
TEST1
TEST2
TEST3
-
-
-
Test pin
10
Connect to DGND.
5,9,11
8
6
PLL
1V
PLL filter pin
10
Connect filter circuit for PLL.
6
8
7
REG15
1.5V
Internal power supply pin for digital circuit
Connect capacitor.
10
Caution: The REG15 of BM28723AMUV should not be used
as an external supply and cannot support voltage load from
external source. Therefore, do not connect anything except
capacitor for stabilization.
7
8
8
10
DGND
DVDD
0V
3.3V
GND pin for Digital I/O
Power supply pin for Digital I/O.
Connect capacitor.
-
-
12
SDATAO
3.3V
Digital audio signal output pin
10
Output data of digital audio signal.
Select pull-up resistor after DVDD is applied.
12
8
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TSZ02201-0C1C0E900720-1-2
31.Aug.2018 Rev.001
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TSZ22111 • 15 • 001
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