RM48 MibSPI5 and Ethernet?

Jack Andrews

Hi,

I'd like to use MibSPI5 along with ethernet on the RM48L952ZWT... however MIBSPI5CLK and (R)MII_TXEN are both on the same pin. Is there any way around this?

Thanks,

Jack

over 12 years ago

0 Jay Shen over 12 years ago

TI__Intellectual 845 points

We have received your question. We will get back to you as soon as possible.

Thanks,

Jay

0 Haixiao Weng over 12 years ago

TI__Genius 13810 points

Unfortunitily, NO workaround.

Regards,

Haixiao

0 Jack Andrews over 12 years ago in reply to Haixiao Weng

Intellectual 370 points

OK, thanks. I've seen a few examples of using the NHET to emulate SPI/UART. Do you think it would be possible to get it running at 20Mbit/s?

0 Haixiao Weng over 12 years ago in reply to Jack Andrews

TI__Genius 13810 points

Using HET to emulate SPI, you can get 2.5MHz, maybe 5MHz, I don't think you can get 20Mz. Reason:

Max VCLK2 frequency 110MHz.. 110MHz/20 =5. This means the HET should have less than 5 instructions to emulate the SPI.

Regards,

Haixiao

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RM48 MibSPI5 and Ethernet?