topic Re: S32K344 RMII + QSPI in S32K

S32K344 RMII + QSPI

marcoelia — Mon, 21 Feb 2022 14:13:27 GMT

Is it really possible to use at the same time both QSPI and RMII interfaces on S32K344 MQFP172?

According to S32K3X4EVB-Q172 schematics/notes the answer seems to be yes.

But, checking the IOMUX spreadsheet, this part seems to lack of medium or fast pads and/or having a bad multiplexing: after selecting the fixed alternatives needed for the 6 QSPI signals, the RMII outputs TXEN, TXD1:0 can be only mapped to 25 MHz max standard-plus pads.

Any suggestion on what is wrong?

Re: S32K344 RMII + QSPI

lukaszadrapa — Tue, 22 Feb 2022 17:18:08 GMT

Hi Marco,

let me check this. I will let you know the result later.

Regards,

Lukas

Re: S32K344 RMII + QSPI

lukaszadrapa — Fri, 25 Feb 2022 07:14:50 GMT

Hi Marco,

here is the response:

"The S32K344EVB-Q172 was developed to support most of the functionalities of the MCU, on this time the Ethernet has routed the recommendation on the RM to support QSPI + MII. As you mentioned due to the pad type support RMII + QPSI is not possible for S32K344 devices."

Regards,

Lukas

Re: S32K344 RMII + QSPI

Fast — Mon, 29 Apr 2024 12:26:11 GMT

Is this still the case, has silicon been improved?