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AM62P-Q1: MMC internal pull up resistor

Xingyu Zhu
Expert 4335 points
Part Number: AM62P-Q1


Tool/software:

Hi expert,

Our customer find occasional eMMC boot failure. We suspect it is caused by MMC data pull up resistor. Our questions are:

1. Is there any internal PU resistor on MMC data pins?

2. If there is, what is the PU resistor value?

3. Do we need to add the external PU?

Best Regards,

Xingyu Zhu

  • 0
    TI__Guru 63235 points

    Why does your customer think their boot issue is related to pull-up resistors? Can you provide any details?

    1. Yes

    2. See the eMMCPHY Electrical Characteristics table in the datasheet. The typical value is 20k ohms.

    3. No