RAM for Ethernet controllers

[thElibrarian]

Hello, Im just looking for the information how many RAM an eTSEC Ethernet controller on the SOC has on it's disposal? I cannot find this detail. 

Thank you

BR /Chris

[June_Lu]

I am sorry, I don't know why I could not receive your reply.

MPC8540 is discontinued, the question related to it is not supported.

Generally, the MPU will have an external RAM to run the program.

If it's MPC8540, there may be external DDR.

Thanks

[June_Lu]

Would you kindly let me know your MPU part number and SW version?

Thanks.

[thElibrarian]

Hi, I don't know where to obtain these exact numbers. I know it's a MPC8540 PowerQUICCIII with an e500 core. Another question is also, if there is a memory between the Ethernet controller and the MPU where Ethernet frames were hand over to the TCP/IP stack. Which should be significant larger? Or does this happen already in the usual RAM?

Thanks a lot

/Chris

[thElibrarian]

I found this document about the eTSEC controller: Use the Enhanced Triple-Speed Ethernet Controller (eTSEC) Is the information Im looking for on page 18, or refer this TX/RX cache more to a buffer within the driver or TCP/IP stack?

Thanks in advance

/Chris