IO retention is supported on MCU_GENERAL and
CANUART IOs, MCU Scratch Memory, SerDes PHY, and DDR PHY.
Note: IO retention on
MCU_GENERAL is currently not supported and must not be used.
- The control of the retention of LVCMOS IOs is
performed via a corresponding PADCONFIG register listed in Section 5.1, Control Module (CTRL_MMR). For more information about the exact
PADCONFIG register see Pin Multiplexing Table in the device-specific
Datasheet.
- MCU-Scratch-Memory - TBD
- The control of the retention of SERDES PHY is performed via CTRLMMR_SERDESx_CTRL[8] RET_EN, x = 0 to 4. For more information about control registers, see Section 5.1, Control Module (CTRL_MMR).
- The control of DDRSS retention is controlled via external DDR_RET pin.