CHANNEL_SELECT field when i.MX6 is set to eCSPI slave mode.

[satoshishimoda]

Hi community,

I have a question about i.MX6 eCSPI.

I understand that CHANEL_SELECT field in ECSPIxCONREG register is set when i.MX6 is master mode and communicates with a external slave device.

Then, I want to confirm whether CHANNEL_SELECT field is also set in i.MX6DQ is eCSPI slave mode or not.

Would you let me know it?

Best Regards,

Satoshi Shimoda

[Yuri]

Hello,

  According to section 21.4.2 (Slave Mode) of the i.MX6 D/Q RM :

"In this configuration, Chip Select (SS) becomes an input signal, and is used to control

data transfers through the Shift register, as well as to load/store the data FIFO."

Have a great day,
Yuri

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[satoshishimoda]

Dear Yuri,

Did you mean "we can confirm whether SS is input to i.MX6 or not by reading CHANNEL_MODE field"?

Or in slave mode, SS status is not affected to CHANNEL_MODE?

Best Regards,

Satoshi Shimoda

[Yuri · Accepted solution]

Hello,

  The CHANNEL_SELECT field cannot be used to get the SS status.

Regards,

Yuri.