Intel 81342 Developer's Manual page 351

A d d r e s s T r a n s l a t i o n U n i t ( P C I E x p r e s s ) — I n t e l
3 . 1 6 . 6 1 P C I E x p r e s s * L i n k C a p a b i l i t i e s R e g i s t e r - P E _ L C A P
T h i s r e g i s t e r i d e n t i f i e s t h e c a p a b i l i t i e s a n d c u r r e n t o p e r a t i n g m o d e o f A T U , D M A s a n d
M e s s a g e U n i t w h e n o p e r a t i n g i n t h e P C I E x p r e s s * m o d e .
T a b l e 1 9 5 . P C I E x p r e s s * L i n k C a p a b i l i t i e s R e g i s t e r - P E _ L C A P
31
IOP
ro ro ro
Attributes
PCI
ro ro ro
Attributes
I n t e r n a l B u s A d d r e s s O f f s e t
+ 0 D C H
B i t D e f a u l t
3 1 : 2 4 0 0 H P o r t # - P C I E x p r e s s * p o r t n u m b e r .
2 3 : 1 8 0 0 H P r e s e r v e d
1 7 : 1 5 1 1 1 b L 1 E x i t L a t e n c y - A c t i v e S t a t e L 1 T r a n s i t i o n n o t s u p p o r t e d
1 4 : 1 2 0 0 1 b L 0 s E x i t L a t e n c y - 6 4 n s - 1 2 8 n s .
1 1 : 1 0 0 1 b A c t i v e S t a t e L i n k P M S u p p o r t
9 : 4 0 8 H M a x i m u m L i n k W i d t h - T h i s d e v i c e s u p p o r t s a m a x i m u m w i d t h o f x 8 .
3 : 0 1 H M a x i m u m L i n k S p e e d - T h e P C I E x p r e s s L i n k o p e r a t e s a t 2 . 5 G b / s .
D e c e m b e r 2 0 0 7
O r d e r N u m b e r : 3 1 5 0 3 7 - 0 0 2 U S
®
8 1 3 4 1 a n d 8 1 3 4 2
28 24 20
ro ro ro ro ro pr pr pr pr pr
ro ro ro ro ro pr pr pr pr pr
16 12
pr rw rw rw rw rw rw rw rw rw
pr ro ro ro ro ro ro ro ro ro
A t t r i b u t e L e g e n d :
R V = R e s e r v e d
P R = P r e s e r v e d
R S = R e a d / S e t
D e s c r i p t i o n
I n t e l
8 4 0
rw rw rw rw rw ro ro ro ro
ro ro ro ro ro ro ro ro ro
R W = R e a d / W r i t e
R C = R e a d C l e a r
R O = R e a d O n l y
N A = N o t A c c e s s i b l e
®
8 1 3 4 1 a n d 8 1 3 4 2 I / O P r o c e s s o r s
D e v e l o p e r ' s M a n u a l
3 5 1