Interface Masters Technologies Inc. Confidential & Proprietary
TAHOE 8824 User Guide
Rev: 01
09/18/2017 Page 18 OF 34
2.9 SMI interface
The CN83xx has two MDIO interfaces that allows the CPU to manage Ethernet
PHYs. Both MDIO interfaces can support both Clause 22 and Clause 45 of the IEEE 802.3
standard.
The TAHOE 8824 has SMI0 connected to the on-board PHYs and SMI1 connected
to the IO module.
Figure 12, TAHOE 8824 SMI Interface Diagram