Data Sheet

Ethernet Controller I210 —System Manageability
676
The parameter that is returned might not be the parameter requested by the MC. The MC should verify
the parameter number (default parameter to be returned is 0x1).
If the parameter number is 0xFF, it means that the data that was requested from the I210 is not ready
yet.The MC should retry the read transaction.
It is responsibility of the MC to follow the procedure previously defined. When the MC sends a Block
Read command (as previously described) that is not preceded by a Block Write command with
bytecount=1, the I210 sets the parameter number in the read block transaction to be 0xFF.
10.5.9.2.5 Read Management Receive Filter Parameters Command
In order to read the management receive filter parameters, the MC should execute two SMBus
transactions. The first transaction is a block write that sets the parameter that the MC wants to read.
The second transaction is block read that read the parameter.
Block write transaction:
The different parameters supported for this command are the same as the parameters supported for
update Management receive filter parameters.
Following the block write the MC should issue a block read that reads the parameter that was set in the
Block Write command:
Data returned from the I210:
The parameter that is returned might not be the parameter requested by the MC. The MC should verify
the parameter number (default parameter to be returned is 0x1).
If the parameter number is 0xFF, it means that the data that was requested from the I210 should
supply is not ready yet. The MC should retry the read transaction.
It is MC responsibility to follow the procedure previously defined. When the MC sends a Block Read
command (as previously described) that is not preceded by a Block Write command with bytecount=1
or 2, the I210 sets the parameter number in the read block transaction to be 0xFF.
Function Command Byte Count Data 1 Data 2
Read MNG RCV filter parameters 0xCC 1 or 2 Parameter number Parameter data
Function Command
Request MNG RCV filter parameters 0xCD
Function Byte Count
Data 1 (Op-
Code)
Data 2 Data 3 … Data N
Read MNG RCV filter parameters N 0xCD
Parameter
number
Parameter dependent