82571EB/82572EI EEPROM Information Guide
9
1.7.5
Device ID (Word 0Dh, 11h)
If the
Load Vendor/Device IDs
bit in the Initialization Control Word 1 (0Ah) is set, this word is
read in to initialize the Device ID of LAN 0 and LAN 1 functions, respectively. Its default value is
105Eh.
1.7.6
Vendor ID (Word 0Eh)
If the
Load Vendor/Device IDs
bit in the Initialization Control Word 1 (0Ah) is set, this word is
read in to initialize the Vendor ID. The default value is 8086h.
1.7.7
Initialization Control Word 2 (Word 0Fh)
This is the second word read by the 82571EB/82572EI and contains additional initialization values
that:
•
Sets defaults for some internal registers
•
Enables/disables specific features
Table 5. Initialization Control Word 2 (Word 0Fh)
Bit
Name
Description
15
APM PME# Enable
Initial value of the
Assert PME On APM Wakeup
bit in the Wake Up
Control register (WUC.APMPME).
14
Reserved
Reserved. Set to 0b.
13:12
Pause Capability
Desired PAUSE capability for advertised configuration base page.
Mapped to TXCW[8:7].
11
ANE
Auto-Negotiation Enable (for SerDes mode). Mapped to
TXCW[31].
10:8
Serial FLASH Size
Indication
Indicates Flash size according to the following equation: Size = 64
KB * 2** (Flash Size Indication field). For example, 64 KB up to
8 MB in the power of 2.
The Flash size impacts the requested memory space for the Flash
and Expansion ROM BARs in PCIe* configuration space.
7
Reserved
Reserved. Set to 0b.
6
PHY Power Down
Enable
When set, enables the PHY to enter a low-power state.
0b = Disable.
1b - Enable.
5
Reserved
Reserved. Set to 1b.
4
Reserved
Reserved. Set to 0b.
3
Reserved
Reserved. Set to 0b.
2
Enable SerDes
Power Down
When set, enables SerDes to enter a low power state when the
function is in Dr state.
0b = Disable.
1b = Enable.
