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Novice
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Timing Constraint on SoC HPS Memory

Hi,

I am having a question on HPS side memory controller.

The timing analyzer complain the timing issue of HPS memory DQS signals.

 

But from the message I received, all the HPS peripherals like USB, I2C clocks and memory controller need not doing any timing constraint as they are hard coded.

And Quartus will handle it automatically.

 

Is it correct?

I don't care any timing complaints on HPS side.

 

Please let me know.

 

Thank you!

 

BRs,

Johnson

 

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7 Replies
Highlighted
6 Views

Hi Johnson,

 

Firstly, may I know which Quartus version and SoC device are you currently working on?

 

Is it possible for you to share the message that you are seeing or screenshot? Which ever is easy for you, so that I can check what type of message is to be ignored.

 

Yes, timing constraints are fixed for both dedicated HPS I/Os for Cyclone V SoC and Arria 10 SoC you do not need to define it.

 

You may refer below for more information regarding the timing constraints on our SoC devices (refer Table 7 on both links )

 

Cyclone V SoC:

https://www.intel.com/content/www/us/en/programmable/documentation/doq1481305867183.html#qpb14813038...

 

Arria 10 SoC:

https://www.intel.com/content/www/us/en/programmable/documentation/pde1458159073865.html#pde14581635...

 

Thanks.

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Novice
6 Views

Hello,

Thank you for getting back!

 

I am using Quartus 16.0.2 and the device is 5CSXFC2C6U23C8.

quartus.jpg

 

Below are Setup and hold time violation message.

 

Setup_Time.jpg

hold_time.jpg

 

Thank you!

BRs,

Johnson

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Highlighted
6 Views

Hi Johnson,

 

I believe the screenshot are the timing compilation report.

 

Warnings report can be seen at the bottom of the screen, e.g:

 

Warning (332174): .....

Warning (332174): ....

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Highlighted
Novice
6 Views

Hi EL,

Thank you for the correction.

 

Attached are warning report,

page_1.jpg

page_2.jpg

page_3.jpg

FYI!

 

BRs,

Johnson

 

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Highlighted
6 Views

Hi Johnson,

 

Thanks.

 

Yes, as you mentioned these timing analyzer warnings can be ignored.

 

Best Regards.

 

 

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Highlighted
Novice
6 Views

Hi EL,

Thanks for the answer and support!

 

BRs,

Johnson

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Highlighted
6 Views

Hi Johnson,

 

Glad to help, I hope I have answered your question.

 

 

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