AM623: MMC1_SDWP pin is pull-down in SK-AM62LP schematics

Hello Koichiro Tashiro

Thank you for the query.

Please refer below FAQ

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1320276/faq-am62a7-why-is-mmc1-powered-by-two-different-voltage-supplies-vddshv0-and-vddshv5?tisearch=e2e-sitesearch&keymatch=MMC1_SDWP#

We do not have the SDWP implementation in the SK.

Regards,

Sreenivasa

Hello Koichiro Tashiro

FYI.

The SDCD and SDWP signal functions are defined by industry specifications. 

Signal/Physical Layer Definitions:

Card Detect (MMC1_SDCD)

0 (Logic Low - VSS) = Card Detected

1 (Logic High - VDD) = No Card Detected

Write Protect (MMC1_SDWP)

0 (Logic Low - VSS) = Write Protection Disabled (Write Enabled)

1 (Logic High - VDD) = Write Protection Enabled (Write Disabled)

https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1116598/am2432-mmcsd-signals?tisearch=e2e-sitesearch&keymatch=MMC1_SDWP#

Regards,

Sreenivasa

Hi Sreenivasa,

It seems you did not answer to my question directly.
But I understood MMC1_SDWP is not used in SK board, so it does not matter whether it is pulled low or high.

Thanks and regards,
Koichiro Tashiro