I am revising a previous design, changing a 100Mbps fibre ethernet PHY from the DP83848 to a DP83640, to include IEEE-1588 Precision Time Protocol support. The previous design used firmware to configure the DP83848i with its default configuration. Now I simply need to add configuration commands related to IEEE-1588 operation.
The configuration register definitions have alot of overlap between these 2 devices. Can I re-use the existing firmware for configuring the DP83848 to configure the DP83640, and just add the additional communication necessary to support IEEE-1588 protocol?
Thanks.
Ralph