Intel G640T CM8062301002204 User Manual

Datasheet, Volume 2

199

This register indicates DMI specific capabilities.

31:18

RO

0h

17:15

RW-O

010b

Uncore

L1 Exit Latency (L1SELAT)
This field indicates the length of time this Port requires to complete 

the transition from L1 to L0. The value 010b indicates the range of 

2 us to less than 4 us.
000 = Less than 1µs
001 = 1 µs to less than 2 µs
010 = 2 µs to less than 4 µs
011 = 4 µs to less than 8 µs
100 = 8 µs to less than 16 µs
101 = 16 µs to less than 32 µs
110 = 32 µs–64 µs
111 = More than 64 µs
Both bytes of this register that contain a portion of this field must 

be written simultaneously in order to prevent an intermediate (and 

undesired) value from ever existing.

14:12

RW-O

010b

Uncore

L0s Exit Latency (L0SELAT)
This field indicates the length of time this Port requires to complete 

the transition from L0s to L0.
000 = Less than 64 ns
001 = 64 ns to less than 128 ns
010 = 128 ns to less than 256 ns
011 = 256 ns to less than 512 ns
100 = 512 ns to less than 1 µs
101 = 1 µs to less than 2 µs
110 = 2 µs–4 µs
111 = More than 4 µs

11:10

RO

11b

Uncore

Active State Link PM Support (ASLPMS)
L0s & L1 entry supported.

9:4

RO

04h

Uncore

Max Link Width (MLW)
This field indicates the maximum number of lanes supported for 

this link.

3:0

RW-OV

0001b

Uncore

Max Link Speed (MLS)
This Reset Value reflects gen1.
0001 = 2.5 GT/s Link speed supported
0010 = 5.0 GT/s and 2.5 GT/s Link speeds supported
All other combinations are reserved.