82577GBE Datasheet, PDF (7/8 Pages) Intel Corporation – Intel® 82577 GbE PHY Specification Update

82577 Specification Update
1.4.5
Errata
1. 9 KB Jumbo Frames Not Supported With PCI Express* (PCIe*) Spread Spectrum Clocking (SSC)
Problem:
82577LM is unable to support 9 KB jumbo frames when PCIe SSC is enabled in Intel^® 5
Series Express Chipset.
Implication: Enabling 9 KB jumbo frames with PCIe SSC enabled might result in data overflow/
underflow errors resulting in packets transmitted/received with CRC errors.
Workaround: For 9 KB jumbo frames support, PCIe SSC must be disabled.
Status:
No fix for 9 KB jumbo frames.
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