Datasheet

Datasheet, Volume 2 67

Processor Integrated I/O (IIO) Configuration Registers

9:4 RO 0h

Negotiated Link Width

This field indicates the negotiated width of the given PCI Express link

after training is completed. Only x8 and x16 link width negotiations are

supported in Integrated I/O.

0x08 = x8 max link width

0x10 = x16 max link width

The value in this field is not defined and could show any value when the

link is not up. Software determines if the link is up or not by reading Bit

13 of this register.

3:0 RO 1h

Current Link Speed

This field indicates the negotiated Link speed of the given PCI Express

Link.

0001b = 2.5 Gbps

0010b = 5 Gbps

Others = Reserved

The value in this field is not defined and could show any value, when the

link is not up. Software determines if the link is up or not by reading Bit

13 of this register.

(Sheet 2 of 2)

Device: 0 (DMI), 3, 5 (PCIe)

Function: 0

Offset: A2h

Bit Attr Default Description