WG82574L S LBA8 Intel, WG82574L S LBA8 Datasheet - Page 210

• Manufacturer Part Number: WG82574L S LBA8
• Manufacturer: Intel

Specifications of WG82574L S LBA8

• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: 0C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 64
• Lead Free Status / RoHS Status: Compliant

8.8
8.8.1
8.8.1.1
Note:
8.8.1.2
8.8.1.3
210
SMBus Pass-Through Transactions
This section details all of the commands (both read and write) that the 82574 SMBus
interface supports for pass-through.
Write Transactions
This section details the commands that the MC can send to the 82574 over the SMBus
interface. The SMBus write transactions table lists the different SMBus write
transactions supported by the 82574.
Transmit Packet Command
If the overall packet length is greater than 1536 bytes, the packet is silently discarded
by the 82574.
Request Status Command
An external MC can initiate a request to read the 82574 manageability status by
sending a Request Status command. When received, the 82574 initiates a notification
to an external MC (when status is ready), after which, an external MC is able to read
the status by issuing this command. The format is as follows:
Receive Enable Command
The Receive Enable command is a single fragment command used to configure the
82574. This command has two formats: short, 1-byte legacy format (providing
backward compatibility with previous components) and long, 14-byte advanced format
(allowing greater configuration capabilities). The Receive Enable command format is as
follows:
Transmit Packet
Transmit Packet
Request Status
Receive Enable
Force TCO
Management
Control
Update MNG RCV
Filter Parameters
Function
TCO Command
Request
Status
Command
0xDD
Block Write
Block Write
Block Write
Block Write
Block Write
Block Write
Block Write
Transaction
Count
Byte
1
First: 0x84
Middle: 0x04
Last: 0x44
Single: 0xC4
Single: 0xDD
Single: 0xCA
Single: 0xCF
Single: 0xC1
Single: 0xCC
Command
Data 1
0
82574 GbE Controller—System Manageability
Multiple
Single
Single
Single
Single
Single
Single
Fragmentation
8.8.1.1
8.8.1.1
8.8.1.2
8.8.1.3
8.8.1.4
8.8.1.5
8.8.1.6
Section