SPRZ450B February 2018 – September 2024 DRA74P , DRA75P , DRA76P , DRA77P
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.
SR 1.0
AM574x: 1.0
DRA75xP, DRA74xP, DRA77xP, DRA76xP: 1.0
TDA2Px: 1.0
AM576x: 1.0