WG82574IT S LBAC Intel, WG82574IT S LBAC Datasheet - Page 233

• Manufacturer Part Number: WG82574IT S LBAC
• Description: CONTROLLER, ENET, INTEL 82574IT, 64PQFN
• Manufacturer: Intel

Specifications of WG82574IT S LBAC

• Ethernet Type: IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
• Supply Voltage Range: 3V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: QFN
• No. Of Pins: 64
• Package / Case: QFN
• Interface Type: I2C, JTAG, PCI, SPI
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

System Manageability—82574 GbE Controller
8.8.2.5
Note:
Note:
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 82574 sets the parameter number in the read
block transaction to be 0xFE.
Read Management Receive Filter Parameters
In order to read the MNG RCV 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 MNG 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 82574:
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
82574 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, the 82574 sets the parameter number in the read block
transaction to be 0xFE.
Request MNG RCV filter parameters
Read MNG RCV filter
Update MNG RCV filter
parameters
Function
parameters
Function
Function
Byte Count
Command
0xCC
N
Command
Byte Count
Data 1 (Op-
0xCD
1 or 2
Code)
0xCD
Parameter number
Parameter
number
Data 2
Data 1
Data 3
Parameter dependent
Parameter data
…
Data 2
Data N
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