[iMX8X] lpi2c FIFO buffer sizes

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[iMX8X] lpi2c FIFO buffer sizes

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ykrons
Contributor II

Hello,

I have recently done some testing with lpi2c i2c interface on a Toradex iMX8DX Colibri board and I have been surprised to see that the RX and TX FIFO size returned by PARAM register is of 16 words (I get 0x44) whereas the Reference Manual (Rev. 0, 05/2020) is reporting 4 words size in §12.3.1.1 and in 12.3.3.1.3.3 Reset values.

Is it a typo in the Reference Manual or did I wrongly interpret the value in PARAM ?

 

Kind regards

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1 Solution
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Juan-Rodarte
NXP Employee
NXP Employee

Hi,

Yes, what the reference manual says is correct, but it seems that the Toradex implementation makes some arrangements to use 16 words.

Best Regards,

Diego.

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1,614 Views
Juan-Rodarte
NXP Employee
NXP Employee

Hi,

Yes, what the reference manual says is correct, but it seems that the Toradex implementation makes some arrangements to use 16 words.

Best Regards,

Diego.

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1,606 Views
ykrons
Contributor II

Ok thanks a lot for clarifications.

I have expected that 4 words is a hard limit and it was not possible to extend it.

Regards

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