GMAC0 and PFE in SGMII Mode

abhi47 — Wed, 01 Feb 2023 09:25:26 GMT

Hi,

Can PFE and GMAC0 be used simultaneously used form communication in SGMII mode in S32G274A?

As GMAC and PFE MAC share some pins, e.g TXD_O[0..3] share PE04..07 and RXD_I[0..3] share PE10..13 as mentioned in S32G-VNP-RDB2 RM.Picture attached for reference.

Re: GMAC0 and PFE in SGMII Mode

Daniel-Aguirre — Wed, 01 Feb 2023 19:04:24 GMT

Hi,

As if S32G274a is capable of using both interfaces at the same time, it should be. On Tables 396 and 397 [Page 2444-2445, S32G2 Reference Manual, Rev. 6, 11/2022] the different modes for the internal SerDes are explained.

As a quick example, configuring SerDes_0 as Mode 3 will result on having both GMAC0 and PFE_MAC2 configured as SGMII. The pinmux is explained in the S32G2_IOMUX.xlsx provided in the S32G2 RM, within the "Misc With Pin Controls" sheet, for this specific example.

As for if RDB2 can handle both communication, there is a "S32G-VNP-RDB2 Ethernet Enablement Guide" available on the S32G-VNP-RDB2 product page (link: S32G2 Vehicle Networking Reference Design | NXP Semiconductors), should be of use on the application you want to replicate.

Please, let us know.

topic GMAC0 and PFE in SGMII Mode in S32G

GMAC0 and PFE in SGMII Mode

Re: GMAC0 and PFE in SGMII Mode