SNLS504E October 2015 – May 2024
PRODUCTION DATA
This same as IEEE power down but the XI pad is also turned off. This mode can be activated by asserting the external PWDN pin or by setting bit 11 of BMCR (Register 0x00). Before activating this mode, it is required to set bit 7 for PHYCR (Register 0x10).
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 should be de-asserted. If the PWDN pin is kept asserted then the PHY remains in power down.