DS80PCI810: PCIe gen2 / gen3

Kai Hsiao

Guru 12675 points

Part Number: DS80PCI810

Dear Sir

If our SPEC need to support PCIE gen3 and gen2 at the same time

May I know where is the best placement for PCI810 ,Can I base on Gen3 SPEC to place DS80PCI810 on 6~8db loss for 4GHz

over 8 years ago

0 Lee Sledjeski over 8 years ago

TI__Mastermind 43795 points

Hi Kai,

The DS80PCI810 is flexible with regards to the actual placement in the channel. I would try to keep the DS80PCI810 at least 8-10 dB @ 4GHz away from the system Tx's. This will give even the lower data rate signals some distance to attenuate.

What is the total channel loss from the host to the endpoint in your system? I can help give you good settings to get the system running.

Regards,

Lee

0 Kai Hsiao over 8 years ago in reply to Lee Sledjeski

Guru 12675 points

Dear Lee

8.5dB loss @ 4GHz
But end customer told us they also have PCIe Gen2 network card need to support
So the placement need to support Gen2 and Gen3

Thanks

0 Lee Sledjeski over 8 years ago in reply to Kai Hsiao

TI__Mastermind 43795 points

Hi Kai,

I would place the DS80PCI810 in the middle of this channel. I would recommend using the CTLE setting of 20K to GND. It will provide enough boost for Gen2 or Gen3 operation.

Regards,

Lee

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DS80PCI810: PCIe gen2 / gen3