How to setup an external PHY (ULPI) for 100 pin derivates of STM32H7B3VIT ?

[IPaul.1]

STM32CubeMX allows only Full HS for STM32H7B3VIT. According to the datasheet, that 100 pin derivate do have a support for HS and external PHY (ULPI). Please, advice, if the 100 pin supports ULPI or how to setup it in the STM32CubeMX.

[Uwe Bonnes]

Probably STM32CubeMX. does not support the setup (yet). To setup manually,carefully read the datasheet and the pinout setting. Look for the PX_C pins that offer access to the alternate functions.

[IPaul.1]

Thanks. However, before we put an effort and decide for PCB layout, I would need to know exactly and directly from ST, if that ULPI feature is supported on 100 (and 144 as well) pin derivates of STM32H7B3 or not. Also, when STM32CubeMX support can be expected.

[Khouloud ZEMMELI]

Hello @IPaul.1​ 

According to DS , as mentioned in the STM32H7B3xI pin/ball definition table, for LQFP144, LQFP100 and TFBGA100 packages, there are some missed signals that are needed to have the ULPI feature, so it's not supported.

The ULPI is supported only when all signals are present ( 12 signals : OTG_HS_ULPI_STP, OTG_HS_ULPI_NXT, OTG_HS_ULPI_DIR, OTG_HS_ULPI_D0..7 ).

When your question is answered, please close this topic by choosing Select as Best. This will help other users find that answer faster.

Thanks for your feedback, Khouloud

[IPaul.1]

Please, if you can answer also the following:

1. Does the same limit to ULPI and 100/144 packages apply to STM32H7B0, STM32H7A0 and other STM32H7 members ?
2. When will members in WLCSP132, LQFP176 and UFBGA169 be available ? Will they be avaialble for small quantity purchase ? We need to buy 3-4 samples and then 100pcs or so.
3. As WLCSP132 supports ULPI, will it be available in small quantity ?

[Khouloud ZEMMELI]

Hi @IPaul.1​ 

For H7B0, the ULPI is not supported for 100/144 Packages, but This is not a rule that is applied on all H7 100/144 Packages, taking the example of H723ZGTx which has the LQFP144 package and at the same time supports the ULPI feature.

I recommend you to always check with DataSheet because Each Part Number has its own features.

For the other questions, you need to contact your local ST sales office from this link.

Thanks, Khouloud