Posting for a customer:
I’m using the XIO2001 and we have some questions regarding the devices test support. We want to do in-circuit PCIe test verification and this requires support on the PCIe endpoint device.
For the receiver testing, does the XIO2001 support training into the loopback state as a slave per the PCI spec? I have PCI Base Spec 2.1 and the Link Training / Initialization is shown in section 4.2.4 (TS1 and TS2 training ordered set). Section 4.2.5.10 also provides info on the loopback mode. Also, is there any way via S/W controllable register settings to force the loopback?
For the transmitter testing, will the device automatically go into the TX Compliance mode if it detects a 50 Ohm load on the bus but doesn’t train up into L0? For TX preset tests, does the device cycle through the different speeds and presets by toggling a pulse on the reference clock input?
If the XIO2001 device doesn’t support the above, does TI provide any other solutions in a redriver or other PCIe-PCI bridge device the supports these testing modes?
Thank you!
