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DM8148 MMC/SD/SDIO Electrical Data/Timing

Aska
Intellectual 740 points

Hi,

         The document SPRS647D  page 332 Table 8-84 and Table 8-85 can see timing value.

Q1.The DM8148 SD _CMD setup time and hold time value need is more than or equal to SD CARD value? or is less than or equal to SD CARD value?

Q2.The DM8148 SD_DATx  setup time and hold time value need is more than or equal to SD CARD value? or is less than or equal to SD CARD value?

Q3.The DM8148 SD_CLOCK rise time and fall time value need is more than or equal to SD CARD value? or is less than or equal to SD CARD value?

         Could you help to checking? thanks.


  • 0
    TI__Guru**** 393215 points
    Hi Aska,
     
    These are parameters of the processor's MMC/SD/SDIO interface, not SD card parameters. The DM814X Datasheet, Section 8.16 states that the 3 MMC/SD/SDIO Controllers are compliant with MMC V4.3, Secure Digital Part 1 Physical Layer Specification V2.00 and Secure Digital Input Output (SDIO) V2.00 specifications.