2023-04-09 05:39 PM
2023-04-09 06:00 PM
They wire up like an SDMMC, should use series resistors.
Look at STM32H745I-DISCO schematic
2023-04-09 07:17 PM
Thank you very much.
I would be grateful if you could tell me one more thing.
Does USB HS connection need to use PHY IC with ULPI interface?
2023-04-10 01:32 AM
USB HS peripheral in STM32 contains a built-in FS PHY, so if you are OK with communicating at FS (12MBit/s raw data rate), you don't need an external PHY.
JW
2023-04-10 02:26 AM
Hello @DHRyu,
You can check the schematic of the Nucleo-H723, sheet 5 you can find out the SDMMC wiring and schematic of STM32H745I-DISCO for the eMMC.
It would be better to enter a new post for a new question to adhere to ST Community guidelines.
As referenced in Datasheet, section 3.43 Universal serial bus on-the-go high-speed (OTG_HS)
When using the USB OTG_HS interface in HS mode, an external PHY device connected to the ULPI is required.
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