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i.MX6SDL eSPI BIT_COUNT and BURST_LENGTH.

Question asked by Satoshi Shimoda on Feb 5, 2015
Latest reply on Feb 6, 2015 by Yuri Muhin

Hi community,

 

Our partner have a question about i.MX6S eCSPI BIT_COUND and BUSRT_LENGTH.

Please see the questions as below.

 

 

[Q1]

"BIT_COUNT" is mentioned in "21.7.3 Transmit Data Register (ECSPIx_TXDATA)" of reference manual (IMX6SDLRM Rev.1).

But, we can not find the bit field in "21.7.4 Control Register (ECSPIx_CONREG)" of reference manual.

I think "BIT_COUNT" is a misprint, "BURST_LENGTH" is correct, right?

 

[Q2]

Description of "BURST_LENGTH" is up to "2^7 words" written in "21.7.4 Control Register (ECSPIx_CONREG) Bit31:20" of reference manual.

We think this description shows "128 words", but we think there are only 64 words in FIFO.

Can you tell us relation of "BURST_LENGTH" and FIFO ?

 

 

Best Regards,

Satoshi Shimoda

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