WEBENCH® Tools/DS80PCI800: Webench simulation tool

Hi Kai,

It is not a user guide, but this presentation does go over some WEBENCH simulations in a PCIe application.

Hopefully this can get you started.

PCI Simulations with WEBENCH Interface Designer.pdf

Best Regards,

Lee

Hi Kai,

You are showing the boost table for the DS100BR111.  The overall CTLE table for the DS80PCI800 and the DS100BR111 is equivalent.

The DS125BR111 and the DS80PCI810 also share a CTLE design.  The table below shows the CTLE gain vs. frequency for the DS125BR111 and the DS80PCI810.

Regards,

Lee

Hi Kai,

Since you have moved to the most sensitive Signal Detect threshold and there are still errors, the only thing still open to try is forcing the DS80PCI800 output to remain active.  The 20" of trace and 2 cables must represent a significant level of signal loss.

To force the outputs to stay active SMBus access is required.

The following DS80PCI800 registers must be written

Reg       Value

0x06 = 18'h

0x0D = 02'h

0x14 = 02'h

0x1B = 02'h

0x22 = 02'h

0x2A = 02'h

0x31 = 02'h

0x38 = 02'h

0x3F = 02'h

Regards,

Lee

Kai,

The numbers are from various sources and simulations.  The circuits are very similar and respond in the same way.  There is only one table for both devices. 

The change in numbers likely comes from the low frequency used to calculate the high frequency gain.

Regards,

Lee