Intel i7-3920XM Extreme AW8063801009607 User Manual

130

Datasheet, Volume 2

6

RWS

0b

Powergood

Selectable De-emphasis (selectabledeemphasis) 
When the Link is operating at 5 GT/s speed, selects the level of 

de-emphasis. Encodings: 
1 = -3.5 dB
0 = -6 dB 
Reset Value is implementation specific, unless a specific value 

is required for a selected form factor or platform. 
When the Link is operating at 2.5 GT/s speed, the setting of 

this bit has no effect. Components that support only the 

2.5 GT/s speed are permitted to hardwire this bit to 0b. 

5:4

RO

0h

3:0

RWS

3h

Powergood

Target Link Speed (TLS) 
For Downstream ports, this field sets an upper limit on link 

operational speed by restricting the values advertised by the 

upstream component in its training sequences. 
Defined encodings are:
0001b = 2.5 Gb/s Target Link Speed
0010b = 5 Gb/s Target Link Speed
0011b = 8 Gb/s Target Link Speed
All other encodings are reserved. 
If a value is written to this field that does not correspond to a 

speed included in the Supported Link Speeds field, the result is 

undefined. 
The Reset Value of this field is the highest link speed supported 

by the component (as reported in the Supported Link Speeds 

field of the Link Capabilities Register) unless the corresponding 

platform / form factor requires a different Reset Value. 
For both Upstream and Downstream ports, this field is used to 

set the target compliance mode speed when software is using 

the Enter Compliance bit to force a link into compliance mode.