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H330S Hardware User Manual
Page 39 of 44
VSPK is connected directly to VBAT.
Audio channel 2: level features of AUXI input interface
Parameter
Test conditions Minimum Value
Typical Value Maximum Value Unit
Bias voltage
No load
2.5
2.6
V
Gain
Programmable,
steps gain:2dB
0
32
dB
Load resistance
2.2
Kohm
Audio channel 2: level features of AUXO output interface:
Parameter
Test conditions Minimum Value
Typical Value Maximum Value Unit
Out voltage
No load
3.8
Vpp
Load resistance
8
ohm
5.8 Digital Audio
H330S supports digital audio I2S interface that supports normal I2S mode and PCM mode. I2S interface
level is 1.8V on average.
I2S signal description:
Pin#
Pin Name
I/O
Description
24
I2S2_CLK0
O
Bit Clock
25
I2S2_WA0
O
Left and right channel clock (LRCK)
26
I2S2_TX
O
Serial data output
27
I2S2_RX
I
Serial data input
28
I2C_DATA
I/O
I2C control signal input/output
29
I2C_SCL
O
I2C control clock signal
54
CLKOUT0
O
26MHz main clock output
5.8.1 I2S
H330S
Signal Direction
Audio CODEC I2S Port
I2S2_CLK0
I2S_CLK
I2S2_WA0
I2S_LRCK
I2S2_RX
I2S_SDIN
I2S2_TX
I2S_SDOUT