WG82574IT S LBAB Intel, WG82574IT S LBAB Datasheet - Page 407
WG82574IT S LBAB
Manufacturer Part Number
WG82574IT S LBAB
Description
Manufacturer
Intel
Datasheet
1.WG82574IT_S_LBAB.pdf
(472 pages)
Specifications of WG82574IT S LBAB
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
64
Lead Free Status / RoHS Status
Compliant
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Diagnostics—82574 GbE Controller
11.4
Note:
Note:
Note:
Loopback Operations
Loopback operations are supported by the 82574 to assist with system and device
debug. Loopback operation can be used to test transmit and receive aspects of
software device drivers, as well as to verify electrical integrity of the connections
between the 82574 and the system (such as, PCIe bus connections, etc.). Loopback
operation is supported as follows:
Configuration for loopback operation varies depending on the link configuration being
used.
All loopback modes are only allowed when the 82574 is configured for full-duplex
operation.
MAC loopback is not functional when the MAC is configured to work at 10 Mb/s.
• MAC Loopback while operating with the internal PHY
• Loopback – To configure for loopback operation, the RCTL.LBM should remain
configured as for normal operation (set=00b). The PHY must be programmed,
using MDIO accesses to its MII management registers, to perform loopback within
the PHY.
407
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