82577GBE Datasheet, PDF (5/8 Pages) Intel Corporation – Intel® 82577 GbE PHY Specification Update

82577 Specification Update
1.4
Changes, Errata, Clarifications
See Section 1.3 for an explanation of terms, codes, and abbreviations used in the following tables and
discussions.
Table 4.
Summary of Changes
1.4.1 Specification Changes ............................................................................ 5
1.
Updates to PXE/iSCSI EEPROM Words ........................................... 5
1.4.2 Specification Clarifications ...................................................................... 6
1.
PHY Does Not Maintain Gigabit Link in Low Power States ................. 6
2.
Activity LED Functionality ............................................................ 6
1.4.3 Software Clarifications ........................................................................... 6
1.
While in TCP Segmentation Offload, Each Buffer is Limited to 64 KB .. 6
1.4.4 Documentation Changes......................................................................... 6
1.4.5 External Errata ..................................................................................... 7
1.
9 KB Jumbo Frames Not Supported With PCI Express* (PCIe*) Spread
Spectrum Clocking (SSC) ............................................................ 7
1.4.1
Specification Changes
1. Updates to PXE/iSCSI EEPROM Words
Word 0x30 (bits 2:0) is now defined as follows:
Bit(s)
2:0
4:3
5
15:7
Value
Port Status
CLP (Combo)
Executes
iSCSI Boot Option ROM
CTRL-D Menu
FCoE Boot Option ROM
CTRL-D Menu
0
PXE
PXE
Displays port as PXE. Allows
changing to Boot Disabled,
iSCSI Primary or Secondary.
Displays port as PXE.
Allows changing to Boot
Disabled, FCoE enabled.
1
Boot Disabled
NONE
Displays port as Disabled.
Allows changing to iSCSI
Primary/Secondary.
Displays port as Disabled.
Allows changing to FCoE
enabled.
2
iSCSI Primary
iSCSI
Displays port as iSCSI
Primary. Allows changing to
Boot Disabled, iSCSI
Secondary.
Displays port as iSCSI.
Allows changing to Boot
Disabled, FCoE enabled.
3
iSCSI Secondary
iSCSI
Displays port as iSCSI
Secondary. Allows changing
to Boot Disabled,
iSCSI Primary.
Displays port as iSCSI
Allows changing to Boot
Disabled, FCoE enabled.
4
FCoE
FCOE
Displays port as FCoE. Allows
changing port to Boot
Disabled, iSCSI Primary or
Secondary.
Displays port as FCoE
Allows changing to Boot
Disabled.
7:5
Reserved
Same as disabled.
Same as disabled.
Same as disabled.
Same a before.
Bit 5: formerly used to indicate iSCSI enable / disable, is no longer valid and is not checked by software.
Same a before.
5