Intel 81342 Developer's Manual page 889

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U A R T s — I n t e l 8 1 3 4 1 a n d 8 1 3 4 2
T a b l e 5 6 3 . U A R T R e g i s t e r M M R A d d r e s s e s
U A R T R e g i s t e r
D L A B B i t V a l u e
A d d r e s s e s
+ 2 3 0 0 H
+ 2 3 0 4 H
+ 2 3 0 8 H
+ 2 3 0 C H
+ 2 3 1 0 H
+ 2 3 1 4 H
+ 2 3 1 8 H
+ 2 3 1 C H
+ 2 3 0 0 H
+ 2 3 0 4 H
+ 2 3 2 4 H
+ 2 3 2 8 H
+ 2 3 2 C H
+ 2 3 4 0 H
+ 2 3 4 4 H
+ 2 3 4 8 H
+ 2 3 4 C H
+ 2 3 5 0 H
+ 2 3 5 4 H
+ 2 3 5 8 H
+ 2 3 5 C H
+ 2 3 4 0 H
+ 2 3 4 4 H
+ 2 3 6 4 H
+ 2 3 6 8 H
+ 2 3 6 C H
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
N a m e
0 U 0 R B R
0 U 0 T H R
0 U 0 I E R
X U 0 I I R
X U 0 F C R
X U 0 L C R
X U 0 M C R
X U 0 L S R
X U 0 M S R
X U 0 S P R
1 U 0 D L L
1 U 0 D L H
X U 0 F O R
X U 0 A B R
X U 0 A C R
0 U 1 R B R
0 U 1 T H R
0 U 1 I E R
X U 1 I I R
X U 1 F C R
X U 1 L C R
X U 1 M C R
X U 1 L S R
X U 1 M S R
X U 1 S P R
1 U 1 D L L
1 U 1 D L H
X U 1 F O R
X U 1 A B R
X U 1 A C R
R e g i s t e r A c c e s s e d
U A R T 0 R e c e i v e B U F F E R ( r e a d o n l y )
U A R T 0 T r a n s m i t B U F F E R ( w r i t e o n l y )
U A R T 0 I n t e r r u p t E n a b l e ( R / W )
U A R T 0 I n t e r r u p t I . D . ( r e a d o n l y )
U A R T 0 F I F O C o n t r o l ( w r i t e o n l y )
U A R T 0 L i n e C o n t r o l ( R / W )
U A R T 0 M o d e m C o n t r o l ( R / W )
U A R T 0 L i n e S t a t u s ( R e a d o n l y )
U A R T 0 M o d e m S t a t u s ( R e a d o n l y )
U A R T 0 S c r a t c h P a d ( R / W )
U A R T 0 D i v i s o r L a t c h ( L o w B y t e , R / W )
U A R T 0 D i v i s o r L a t c h ( H i g h B y t e , R / W )
U A R T 0 F I F O O c c u p a n c y R e g i s t e r ( R / W )
U A R T 0 A u t o b a u d C o n t r o l R e g i s t e r ( R / W )
U A R T 0 A u t o b a u d C o u n t R e g i s t e r ( r e a d o n l y )
U A R T 1 R e c e i v e B U F F E R ( r e a d o n l y )
U A R T 1 T r a n s m i t B U F F E R ( w r i t e o n l y )
U A R T 1 I n t e r r u p t E n a b l e ( R / W )
U A R T 1 I n t e r r u p t I . D . ( r e a d o n l y )
U A R T 1 F I F O C o n t r o l ( w r i t e o n l y )
U A R T 1 L i n e C o n t r o l ( R / W )
U A R T 1 M o d e m C o n t r o l ( R / W )
U A R T 1 L i n e S t a t u s ( R e a d o n l y )
U A R T 1 M o d e m S t a t u s ( R e a d o n l y )
U A R T 1 S c r a t c h P a d ( R / W )
U A R T 1 D i v i s o r L a t c h ( L o w B y t e , R / W )
U A R T 1 D i v i s o r L a t c h ( H i g h B y t e , R / W )
U A R T 1 F I F O O c c u p a n c y R e g i s t e r ( R / W )
U A R T 1 A u t o b a u d C o n t r o l R e g i s t e r ( R / W )
U A R T 1 A u t o b a u d C o u n t R e g i s t e r ( r e a d o n l y )
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I n t e l 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
8 8 9