SNLS614A September 2018 – December 2018 DP83869HM
The DP83869HM needs external control over RESET_N pin during power up. If RESET_N pin is connected to host controller, then the PHY should be held in reset for a minimum of 200ms after the last supply powers up as shown in Figure 4. If host controller cannot be connected to RESET_N then a 100-Ω resistor and 47-µF capacitor are required to be connected in series between RESET_N pin and ground as shown in Figure 32. During normal operation, the device can be reset by a hardware or software reset.