topic Re: IMX8M: PCIe port as SGMII Interface possible? in i.MX Processors

IMX8M: PCIe port as SGMII Interface possible?

sergeyan — Thu, 13 May 2021 10:14:01 GMT

Hi!

Is it possible to configure the PCIe port as a SGMII Interface and connect a PHY to it to establish a connection to the Etnernet?

Thank you!

Re: IMX8M: PCIe port as SGMII Interface possible?

Yuri — Thu, 13 May 2021 11:19:22 GMT

@sergeyan
Hello,

alas, no - it is not possible to configure the PCIe port as a SGMII Interface.

Regards,
Yuri.

Re: IMX8M: PCIe port as SGMII Interface possible?

sergeyan — Thu, 13 May 2021 12:18:56 GMT

Hello, Yuri!

That is, the internal content of the PCIe port IMX8* differs from that of the SerDes ports of other CPUs such as LS1043A or S32G?

Then is it possible to use an external Ethernet bridge with the PCIe interface (LAN7430 "Microchip")?

Thank you!

Re: IMX8M: PCIe port as SGMII Interface possible?

Yuri — Fri, 14 May 2021 05:51:43 GMT

@sergeyan
Hello,

i.MX devices do not support the SerDes.
As for external Ethernet bridge with the PCIe interface - it is possible.
Note: customers should adapt Linux driver(s), if needed.

Regards,
Yuri.

Re: IMX8M: PCIe port as SGMII Interface possible?

sergeyan — Fri, 14 May 2021 05:47:50 GMT

Hello, Yuri

It's a pity, we bought EVAL Board for imx8m, but we had to choose EVAL for S32G2.

We need a "warm" (1-2W) (possibly without a heatsink) CPU with three or four MACs.

Another question: is it possible to choose a power profile CPU by standard means for work without a heatsink and fans (only on a board) on the S32G2, IMX8M?

Thank you!

Re: IMX8M: PCIe port as SGMII Interface possible?

Yuri — Sun, 16 May 2021 08:24:16 GMT

@sergeyan
Hello,

it depends on applications - if heatsink or /and fan are needed.
Thermal estimations, using thermal resistance data in the Datasheet
or thermal models, should be performed.

Regards,
Yuri.