PCI2050B: Carrier Board designed with PCi2050B for PCI Bus slot extension leading to SBC Fail or Hanging issue.

Venkata Rao M

Part Number: PCI2050B

Hi TI Team,

Hope you are doing Good.

We have designed a Carrier Board for PCI Bus slot expansion using PCI2050B but the Board is not getting detected when inserted on a Backplane with SBC and leading to SBC boot fail or Hanging issue. Designed the schematics, following the reference schematics. We are observing this issue when carrier board with PCI2050B chipset is inserted without mounting any Add-on Boards on the expanded PCI Bus slots.

Please require your support on this at the earliest and please revert for any further information.

Thanks & Regards,

Venkat Rao.

over 1 year ago

0 David Waier over 1 year ago

TI__Mastermind 20901 points

Hi Venkat,

When you refer to the reference schematics, are you referring to this document? 8004.PCI2050 EVM Schematic.pdf

Please also note the attached Implementation Guide: 6355.PCI2050B Implementation Guide.pdf

Unfortunately, support for this device is very limited due to its age. Please let me know if you have any follow-up questions.

Best,
David

0 Venkata Rao M over 1 year ago in reply to David Waier

Prodigy 70 points

Hi David,

Yes, We have referred the same schematics and implementation guide but facing the above mentioned issues.

Any clues please..??

Regards,

Venkat.

0 David Waier over 1 year ago in reply to Venkata Rao M

TI__Mastermind 20901 points

Hi Venkat,

I am not quite sure what your design is - do you have a schematic of your design?

Please also note the attached errata: PCI2050B Errata sllz041b.pdf

Best,
David

0 Venkata Rao M over 1 year ago in reply to David Waier

Prodigy 70 points

Hi David,

However we resolved the above issue. Now, PCI Bridge is detected but devices connected on secondary bus are not detected.

Can you please me in this?

Can u tell me which signals are important for the detection?

Can you share me any application notes if available for PCI BUS.?

Regards,

Venkat.

0 David Waier over 1 year ago in reply to Venkata Rao M

TI__Mastermind 20901 points

Hi Venkat,

Could you please clarify how the previous issue was solved?

There are various PCI control signals routed to each PCI card (such as CLKOUTx) along with many shared PCI bus signals (AD[31:0], C/BE#[3:0], etc.). My best reference in regards to PCI bus is the PCI2050B data sheet and the implementation guide.

Best,
David

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PCI2050B: Carrier Board designed with PCi2050B for PCI Bus slot extension leading to SBC Fail or Hanging issue.