SPRZ436H October 2015 – July 2024 AM5706 , AM5708 , AM5716 , AM5718 , AM5718-HIREL
MMC1 IOs and PBIAS Must Be Powered-Up Before Isolation
Medium
IO Isolation, as described in TRM section “Isolation Requirements”, may fail if the MMC1 IOs and PBIAS are not powered-up.
Power-up the MMC1 IOs and PBIAS before starting the Isolation Sequence. This can be done by setting the CTRL_CORE_CONTROL_PBIAS[27] SDCARD_BIAS_PWRDNZ and CTRL_CORE_CONTROL_PBIAS[26] SDCARD_IO_PWRDNZ bits to 1.
AM571x SR 2.1, 2.0, 1.0
AM570x SR 2.1, 2.0
DRA79x: 2.1, 2.0
TDA2Ex (23mm): 2.0, 1.0
TDA2Ex (17mm): 2.1, 2.0
AM571x: 2.1, 2.0, 1.0
AM570x: 2.1, 2.0
DRA72x: 2.0, 1.0
DRA71x: 2.1, 2.0