EP80579 Datasheet, PDF (1415/1916 Pages) Intel Corporation – Intel® EP80579 Integrated Processor Product Line

Intel^® EP80579 Integrated Processor
Table 37-6. EEPROM Address Map
Word Offset
45h
46h
47h
48h
49h
4Ah
4Bh
4Ch
4Eh
4Fh
50h
.
.
FFh
Used By MAC
S/W use only
S/W use only
S/W use only
S/W use only
S/W use only
S/W use only
S/W use only
S/W use only
S/W use only
Upper Byte - Bits 15:8
Lower Byte - Bits 7:0
PXE Word
PXE Word
PXE Word
PXE Word
PXE Word
PXE Word
PXE Word
PXE Word
PXE Word
Reserved
Available for Software
37.5.11.5 Hardware Accessed Words
This section describes the EEPROM words that are loaded and used by the MAC. Most of
these bits are located into a configuration registers. The words will only be read and
used if the signature field in the Initialization Control Word 1 field correct.
37.5.11.5.1 Initialization Control Word 1
The first word read by the MAC and common for all MACs.
Table 37-7. Initialization Control Word 1
Bit Bit Acronym
Bit Description
15:14
13:12
11
10
Signature
Reserved
Reserved
FD
The Signature field is a signature of (01)b, indicating to the device that there is a valid
EEPROM present. If the Signature field is not (01)b, the other bits in this word are
ignored, no further EEPROM read is performed, and default values are used for the
configuration space IDs.
Reserved
Reserved. Must be set to ‘1’
Full Duplex. Controls the MAC duplex setting.
0 = Half Duplex
1 = Full Duplex
In half-duplex mode, the EP80579’s GbE transmits carrier extended packets and can
receive both carrier extended packets, and packets transmitted with bursting.
This bit overrides the in register CTRL.FD
9
Reserved
Reserved. Must be set to ‘1’
8:4
Reserved
Reserved
0 - The Power Management Registers set is read only, and the MAC will not execute a
3
Power
hardware transition to D3.
Management
1 - Full support for power management
2:0
Reserved
Reserved
August 2009
Order Number: 320066-003US
Intel^® EP80579 Integrated Processor Product Line Datasheet
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