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Intel
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82575EB Gigabit Ethernet Controller — Hardware Accessed Words
Intel
®
82575EB Gigabit Ethernet Controller 324632-003
Software Developer’s Manual and EEPROM Guide Revision: 2.1
64 January 2011
4.5.1.12 MSI-X Configuration (Word 16h)
4.5.1.13 PLL/Lane/PHY Initialization Pointer (Word 17h)
4.5.1.14 PCIe* Initialization Configuration 1 (Word 18h)
This field sets default values for some internal registers and enables or disables specific features.
4.5.1.15 PCIe* Initialization Configuration 2 (Word 19h)
This word sets default values for some internal registers.
Table 12. MSI-X Configuration (Word 16h)
Bit(s) Name Default Description
15:12 MSI-
X0_N
9h This field specifies the number of entries in MSI-X tables of LAN 0. The range is 0-15.
MSI_X_N is equal to the number of entries minus one.
11:8 MSI-
X1_N
9h This field specifies the number of entries in MSI-X tables of LAN 0. The range is 0-15.
MSI_X_N is equal to the number of entries minus one.
7:5 Reserved - Reserved.
4:0 PCIE_
EIDLE_
DLY
0h PCIe* Electrical Idle Delay
Delay cycles before entering electrical idle to allow a data path flush.
Bit(s) Name Default Description
15:0 PLL/Lane/PHY Initialization Pointer
Table 13. PCIe* Initialization Configuration 1 (Word 18h)
Bit(s) Name Default Description
15 Reserved 0b Reserved. Should be set to 0b.
14:12 L1 Act
Exit
Latency
110b This field represents the L1 active exit latency for the configuration space. When it is set to
110b, the latency range is 32 μs to 64 μs.
11:9 L1 Act
Accept
Latency
110b This field represents the L1 active acceptable latency for the configuration space. When it is
set to 110b, the acceptable latency range is 32 μs to 64 μs.
8:6 L0s
Accept
Latency
011b This field represents the L0s acceptable latency for the configuration space. When it is set
to 011b, the acceptable latency is 512 ns.
5:3 L0s
Separate
d Exit
Latency
001b This field represents the L0s exit latency for active state power management with a
separated reference clock. When it is set to 001b, the latency range is between 64 ns and
128 ns.
2:0 L0s
Common
Exit
Latency
001b This field represents the L0s exit latency for active state power management with a
common reference clock. When it is set to 001b, the latency range is between 64 ns and
128 ns.