Embedded Connectivity
Intel network controllers, Firmware, and drivers support systems
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I225 PCIe without PERST and CLKREQ

Marco000
Beginner
2,185 Views

Hello,

I´m into designing a interface PCBA with the I225 Controller. The evaluationboard I´m using to test my produced board has a M.2 connector so I´ll design the edge of my PCB like the connector. The connector doesn´t use the CLKREQ# and PERST Signals. They are not connected at the evaluation board. Is it still possible to communicate via PCIe without these two auxiliary signals?

Best regards

Marco

 

 

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CarlosAM_INTEL
Moderator
2,089 Views

Hello, @Marco000:

Thanks for your reply.

We suggest that your design should be reviewed by Intel. You should follow the procedure stated on the following website:

https://edc.intel.com/Tools/Design-Review/Default.aspx

Your questions related to this process should be addressed by filling out the form stated on the following website:

https://edc.intel.com/Tools/Design-Review/Feedback/

Best regards,

@CarlosAM_INTEL.

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CarlosAM_INTEL
Moderator
2,169 Views

Hello, @Marco000:

Thank you for contacting Intel Embedded Community.

You should refer to the information stated in sections 1.1.3 and 1.1.5, on pages 3 and 4 of the Intel® Ethernet Controller I225 Design Considerations that should be found when you are logged into your Resource and Design Center (RDC) privileged account in the following website:

https://cdrdv2.intel.com/v1/dl/getContent/607353

The RDC Account Support form is the channel to process your account update request or report any inconveniences with the provided website. It can be found at:

https://www.intel.com/content/www/us/en/forms/support/my-intel-sign-on-support.html

Best regards,

@CarlosAM_INTEL.

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Marco000
Beginner
2,148 Views

Hello Carlos,

thanks for you quick answer. Sadly the signal CLKREQ is not mentioned in these sections. Can you help me with this signal?

Best regards

Marco

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CarlosAM_INTEL
Moderator
2,137 Views

Hello, @Marco000:

Thanks for your reply.

You should refer to section 1.8, on page 21 of the document mentioned in our previous communication.

Best regards,

@CarlosAM_INTEL.

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Marco000
Beginner
2,121 Views

Hello Carlos,

this section 1.8 deals with the leakage protection circuit which can be used for the signal path, but not if the signal path is needed or I can just use a Pull-Up resistor at this pin.

Best regards Marco

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CarlosAM_INTEL
Moderator
2,090 Views

Hello, @Marco000:

Thanks for your reply.

We suggest that your design should be reviewed by Intel. You should follow the procedure stated on the following website:

https://edc.intel.com/Tools/Design-Review/Default.aspx

Your questions related to this process should be addressed by filling out the form stated on the following website:

https://edc.intel.com/Tools/Design-Review/Feedback/

Best regards,

@CarlosAM_INTEL.

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