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M14A2A User Manual
Figure 7.
Recommended circuit for the I2S interface
2.6.3.
I2C Interface
There is one I2C interface in M14A2A. It was recommended to add pull high to 1.8 V through resistors
with values of 2.2
kΩ
to 4.7 k
Ω
. ICs and sensors can use the same I2C interface. M14A2A can recognize
them by different addresses.
Figure 8.
Recommended circuit for the I2C interface
2.6.4.
UART Interface
There are dual UART interfaces. One is 4 bit for high-speed data transfer, and the other is 2 bit for
diagnostic tools and debugging.
48
PCM_DOUT
I2S_DATA_OUT
49
PCM_CLK
I2S_BCK
