ZHCSIS3D September 2018 – June 2025 DP83869HM
PRODUCTION DATA
The PHY is powered down but access to the PHY through MDIO-MDC pins is retained. This mode can be activated by asserting external PWDN pin or by setting bit 11 of BMCR (Register 0h).
The PHY can be taken out of this mode by a power cycle, software reset, or by clearing the bit 11 in BMCR register. However, the external PWDN pin must be deasserted. If the PWDN pin is kept asserted then the PHY remains in power down.