WG82574IT S LBAC Intel, WG82574IT S LBAC Datasheet - Page 41
WG82574IT S LBAC
Manufacturer Part Number
WG82574IT S LBAC
Description
CONTROLLER, ENET, INTEL 82574IT, 64PQFN
Manufacturer
Intel
Datasheet
1.WG82574IT_S_LBAC.pdf
(490 pages)
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
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Interconnects—82574 GbE Controller
3.1.6.1.2
3.1.6.1.3
3.1.7
3.1.7.1
3.1.7.2
Table 23.
Error Pollution
Error pollution can occur if error conditions for a given transaction are not isolated to
the error's first occurrence. If the PHY detects and reports a receiver error, to avoid
having this error propagate and cause subsequent errors at upper layers, the same
packet is not signaled at the data link or transaction layers.
Similarly, when the data link layer detects an error, subsequent errors that occur for the
same packet is not signaled at the transaction layer.
Completion With Unsuccessful Completion Status
A completion with unsuccessful completion status is dropped and not delivered to its
destination. The request that corresponds to the unsuccessful completion is retried by
sending a new request for the undeliverable data.
Link Layer
ACK/NAK Scheme
The 82574L supports two alternative schemes for ACK/NAK rate:
The PCIe Error Recovery bit, loaded from NVM, determines which of the two schemes is
used.
Supported DLLPs
The following DLLPs are supported by the 82574 as a receiver:
DLLPs Received by The 82574L
The following DLLPs are supported by the 82574 as a transmitter:
ACK
NAK
PM_Request_Ack
InitFC1-P
InitFC1-NP
InitFC1-Cpl
InitFC2-P
InitFC2-NP
InitFC2-Cpl
UpdateFC-P
UpdateFC-NP
UpdateFC-Cpl
1. ACK/NAK is scheduled for transmission following any TLP.
2. ACK/NAK is scheduled for transmission according to timeouts specified in the PCIe
specification.
Remarks
v2v1v0 = 000
v2v1v0 = 000
v2v1v0 = 000
v2v1v0 = 000
v2v1v0 = 000
v2v1v0 = 000
v2v1v0 = 000
v2v1v0 = 000
v2v1v0 = 000
Remarks
41
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