SNLA438 September 2023 DP83822H , DP83822HF , DP83822I , DP83822IF , DP83826E , DP83826I , DP83867CS , DP83867E , DP83867IS , DP83869HM
If hardware bootstraps are not sufficient, our Ethernet PHYs can be configured via Register Writes, which can change the PHYs mode, regardless of how the Bootstraps are configured.
Register Address | Write Value | Remarks |
---|---|---|
0000 | 1140 |
Auto-negotiation enabled, Full Duplex Mode, For Forced 100Mbps write 2100 For Forced 1000Mbps write 2140, Note: Not recommended |
0004 | 0181 | De-advertise 10Base-Te |
0009 | 0200 | De-advertise Half-Duplex for 1000Base-T |
0010 | 5048 |
SGMII disabled Auto MDI-X enable |
002D | 401F |
FLD Enable Last nibble F sets Fast Link Drop Functionality Details can be found in Data Sheet, search for 0x002D |
0032 | 00D3 |
RGMII Enable |
001F | 4000 | Soft Reset PHY |