SMSC LAN9311i Manual De Usuario

Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface

SMSC LAN9311/LAN9311i

65

Revision 1.4 (08-19-08)

 

The following procedure should be followed in order to add, delete, and modify the ALR entries:

1. Write the 

 and 

 with the desired MAC address and control

bits. 

Note:An entry can be deleted by setting the Valid and Static bits to 0.

2. Write the 

 register with 0004h (Make

Entry)

3. Poll the Make Pending bit in the 

 until it is cleared.

4. Write the 

 with 0000h.

The ALR contains a search engine that is used by the host to read the MAC Address Table. This
engine is accessed by using the 

, 

, and 

.

Note: The entries read are not necessarily in the same order as they were learned or manually

added.

The following procedure should be followed in order to read the ALR entries:

1. Write the 

 with 0002h (Get First Entry).

2. Write the 

 with 0000h (Clear the Get

First Entry Bit)

3. Poll the Valid and End of Table bits in the 

 until either are set.

4. If the Valid bit is set, then the entry is valid and the data from the 

 and 

 can be stored.

5. If the End of Table bit is set, then exit.

6. Write the 

 with 0001h (Get Next Entry).

7. Write the 

 with 0000h (Clear the Get

Next Entry bit)

8. Go to step 3.

Note: Refer to 

 through 

 for detailed

definitions of these registers.