TMDS243EVM: Is WR_PROTECT effective at 0 or 1? Is SD_DETECT effective with 0 or 1?

The "Standard Size SD Card Mechanical Addendum" recommends using an SD Card connector that has a card detection switch that is open when the SD Card is not inserted and closes when the SD Card is inserted. One side of the SD Card connector switch is connected to ground (VSS) and the other side of the switch is connected to the MMC1_SDCD signal which is pulled up to the respective IO supply via an external resistor. With this connection topology the MMC1_SDCD signal will be high when the card is not inserted and will be low when the card is inserted. 

Note: VDDSHV0 is the IO supply for the AM243x MMC1_SDCD and MMC1_SDWP inputs, and VDDSHV5 is the IO supply for the other MMC1 signals. 

The "Standard Size SD Card Mechanical Addendum" doesn't provide any specific recommendation for Write Protect.

I do not think the MMCSD host controller has any specific logic state requirement for these inputs, and software can be configured to use an active-low or active-high signal for either of these signal functions. Please tell me what software you are planning to use in your design, and I will assign this question to the appropriate software team to confirm.