SPRUIM2H May 2020 – October 2023 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
The MDIO will assert the MDIO_LINKINT signals if there is a change in the link state of the Ethernet PHY corresponding to the address in the [4-0] PHYADR_MON field of the MDIO MDIO_USER_PHY_SEL_REG_j (where j = 0 or 1) registers and the corresponding [6] LINKINT_ENABLE bit is set. The MDIO_LINKINT event is also captured in the MDIO MDIO_LINK_INT_MASKED_REG register. MDIO_LINKINT[0] and MDIO_LINKINT[1] correspond to the MDIO MDIO_USER_PHY_SEL_REG_0 and MDIO_USER_PHY_SEL_REG_1 registers, respectively.
When the [31] GO bit in the MDIO_USER_ACCESS_REG_j (where j = 0 or 1) registers transitions from ‘1’ to ‘0’, indicating the completion of a user access, and the corresponding [1-0] USERINTMASKSET field in the
MDIO_USER_INT_MASK_SET_REG register is set, the MDIO_USERINT signal is asserted ‘1’. The MDIO_USERINT event is also captured in the MDIO_USER_INT_MASKED_REG register. MDIO_USERINT[0] and MDIO_USERINT[1] correspond to the MDIO_USER_ACCESS_REG_0 and MDIO_USER_ACCESS_REG_1 registers, respectively.