Initial iMX93 Questions

ABuskirk — Mon, 08 May 2023 12:51:23 GMT

1) Need propagation delay values for the LPDDR4 lines (or all) for 11x11 IMX93 package. Using Altium for the project. Required as we prepare to tune the LPDDR4 traces. Did not see this in the IBIS Model.

2) Is there an app-note like 8MN_HDG_LPDDR4 for the IMX93? This app note gives some helpful guidance for the iMX 8M Nano design using LPDDR4.

3) Also would like a recommended pad diameter and solder mask expansion for the 11x11 package. Or at least what was used for the IMX93 eval kits.

4) Also we have contacted Micron to get propagation delay values for the MT53E1G16D1FW-046 AAT:A. If you have these available, it would also be helpful.

5) Another question concerning the EVK. It does not appear that the data lines are tuned. for example DRAM_DATA14_A. Is this correct?

Re: Initial iMX93 Questions

Manuel_Salas — Mon, 08 May 2023 19:16:40 GMT

Hello!

1) Please refer to Hardware Design Guide, chapter 3.6.6 i.MX 93 DDR package delays:

2) We have not a document as in IMX8MN yet, but again you can refer to IMX93 Hardware Design Guide in chapter 3.6.2 i.MX 93 LPDDR4/4X-3733 routing recommendations (Look for documentation in the IMX93 page).

3)According to de Hardware Design Guide, the minimum pad diameter is 16 mil, please check the chapter 3.4.2 Manufacturing recommendation.

4)Unfortunately we have not that documentation available.

5)What do you refer with "tuned for example DRAM_DATA14_A"?

Best regards!

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Initial iMX93 Questions

Re: Initial iMX93 Questions