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 through Register Writes, which can change the PHYs mode, regardless of how the Bootstraps are configured.
Register Address | Write Value | Remarks |
---|---|---|
0000 | 3100 |
Auto-Negotiation and Full Duplex Enabled. For 100Mbps Forced Mode write '2100' |
0004 | 0101 | De-advertise 10BaseTe and Half Duplex modes of operation |
000A | See Remark |
For Copper, write '0080' For Fiber write '4080' |
000B | 100F |
FLD Enabled Last nibble 'F' sets Fast Link Drop Functionality Details can be found in Data Sheet, search for '0x000B' |
001F | 4000 | Soft Reset PHY |