WG82574L S LBA8 Intel, WG82574L S LBA8 Datasheet - Page 35

• 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

Interconnects—82574 GbE Controller
3.1.5
3.1.5.1
Table 21.
Host I/F
Tag IDs
PCIe device numbers identify logical devices within the physical device (the 82574 is a
physical device). The 82574 implements a single logical device with one PCI function -
LAN. The device number is captured from each type 0 configuration write transaction.
Each of the PCIe functions interface with the PCIe unit through one or more clients. A
client ID identifies the client and is included in the Tag field of the PCIe packet header.
Completions always carry the tag value included in the request to enable routing of the
completion to the appropriate client.
Client IDs are assigned as follows:
Assignment of Client IDs
00
01
02
04
05
06
07
08
09
0A
0B
0C
0E
10
11
1E
1F
Others
TAG Code
in Hex
RX: WR REQ (data from Ethernet to main memory)
RX: RD REQ to read descriptor to core
RX: WR REQ to write back descriptor from core to memory
TX: RD REQ to read descriptor to core
TX: WR REQ to write back descriptor from core to memory
TX: RD REQ to read descriptor to core second queue
TX: WR REQ to write back descriptor from core to memory (second queue)
TX: RD REQ data 0 from main memory to Ethernet
TX: RD REQ data 1 from main memory to Ethernet
TX: RD REQ data 2 from main memory to Ethernet
TX: RD REQ data 3 from main memory to Ethernet
RX: RD REQ to bring Descriptor to core second Queue
RX: WR REQ to write back descriptor from core to memory (second queue)
MNG: RD REQ: Read data
MNG: WR REQ: Write data
MSI and MSI-X
Message unit
Reserved
Flow: TLP TYPE – Usage
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