SPI slave is used for transmission in the project. When you see the AUTOPCS bit, learn from the reference manual that the bit is an internal PCS signal at the end of each transferWord ,what is mean?
The LPSPI module supports interfacing to external masters that provide only clock anddata pins (LPSPI_PCS is not required). See "220.127.116.11 Clocked Interface" in the reference manual.
When we look at the AUTOPCS bit in the reference manual, there is the explanation that for correct operations, the LPSPI slave normally requires the PCS to negate between frames. So, if AUTOPCS bit is set the PCS signal is generated automatically at the end of each transferred word.
I hope it helps you
According to what you mean, the data will be transmitted at two levels in CS.
just as this? is this right?
If SPI slave is used Chip Select (CS) is not required.
I'm not sure what represents CS in your image.
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