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WFitt's avatar
WFitt
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3 years ago

eSPI Agent Core, writing response packet to PCTXFIFO

Hi, The Intel eSPI Agent Core is receiving a PC_MEMWR32 (1 byte) packet from the eSPI master, an Intel Elkhart Lake CPU. I am reading out the PCRXFIFO via IP core's Avalon MM bus until RX queue is ...
WFitt's avatar
WFitt
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3 years ago

Thank you, In the meantime I have solved this problem.

This would have been the answer that I needed:

In the PCTXFIFO must be written (example):

- Byte 1: 0Fh (cycle type)
- Byte 2: 00h (length MSB)
- Byte 3: 01h (length LSB)
- Byte 4: 55h (Data)

Exactly this bytes I wrote in the FIFO.

I would have enjoyed your confirmation that I was right.

My problem was caused by my VHDL code reading the PCRXFIFO.

Now it works fine.

Regards

Wolfram