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DS160PT801: DS160PT801 for PCIE bifurcation

Part Number: DS160PT801

Tool/software:

Hi, Team

We use DS160PT801 ReTimer to design PCIE X8 Add-in card.

We'd like to know when system BIOS doesn't setup x4, x4 bifurcation function?  the DS160PT801 can setup x4, x4 bifurcation through EEPROM or strap on pin v23.

Our EEPROM is loading DS160PT801_4x4.

We had finished the DS160PT801 for PCIE x8 gen 4 products. 

The add-in card can work normal, but it can't be bifurcated by itself through EEPROM. 

Or through pin v23 add 10k to GND?

Please help solve problem.

Thanks

perry