WG82574L S LBA9 Intel, WG82574L S LBA9 Datasheet - Page 229

• Manufacturer Part Number: WG82574L S LBA9
• Description: CONTROLLER, ENET, INTEL 82574L, 64PQFN
• Manufacturer: Intel

Specifications of WG82574L S LBA9

• Ethernet Type: IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
• Supply Voltage Range: 3V To 3.6V
• Operating Temperature Range: 0°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
8.8.2.2
Note:
Note:
Read Status
Function
Read Status Command
The MC should use this command after receiving a notification from the 82574L (such
as SMBus Alert). The 82574L also sends a notification to the MC in either of the
following two cases:
Commands 0xC0/0xD0 are for backward compatibility and can be used for other
payloads. The 82574L defines these commands in the opcode as well as which payload
this transaction is. When the 0XDE command is set, the 82574 always returns opcode
0XDD with the 82574 status. The MC reads the event causing the notification, using the
Read Status command as follows:
The 82574L response to one of the commands (0xC0 or 0xD0) in a given time as
defined in the SMBus Notification Timeout and Flags word in the NVM.
Status Data Byte 1 lists the status data byte 1 parameters.
Receive TCO Partial
Status
• The MC asserts a request for reading the status.
• The 82574L detects a change in one of the Status Data 1 bits (and was set to send
status to the MC on status change) in the Receive Enable command.
Function
0XC0 or
0XD0 or
0XDE
Command
3
Count
Byte
0XDD
(Op-Code)
Data 1
See Below
Data 1)
(Status
Data 2
(Status Data 2)
Data 3
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