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Original question:

DRA821U-Q1: DRA821U LPDDR4 nets propagation delay

DRA821U-Q1: LPDDR4 net pin delay in mm

Syed N Akhtar
Prodigy 120 points
Part Number: DRA821U-Q1
Other Parts Discussed in Thread: DRA821

Hi,

Is it possible to get the pin delay data on DRA821 processor LPDDR4 net pins in mm unit instead of ps unit? 

This post is related to following E2E post where the DRA821 processor LPDDR4 net pins delay data was shared in the form of spreadsheet:

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1227300/dra821u-q1-dra821u-lpddr4-nets-propagation-delay/4640369#4640369

Regards,

Syed

  • 0
    TI__Guru 53275 points

    I'm not sure I understand the request.  All of our LPDDR4 requirements are measured in time (ps).  The conversion to mm is not as accurate for several reasons.  The propagation rate will vary with material, and may (or may not) account for vertical delay (vias).