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1 5 . 4 . 9
U A R T x S c r a t c h p a d R e g i s t e r
T h i s r e a d / w r i t e r e g i s t e r h a s n o e f f e c t o n t h e U A R T . I t i s i n t e n d e d a s a s c r a t c h p a d
r e g i s t e r f o r u s e b y p r o g r a m m e r s .
T a b l e 5 7 5 . U A R T x S c r a t c h p a d R e g i s t e r - ( U x S C R )
s
3 1
t e
P
b u
r v
I O
r i
t t
A
e s
u t
I
P C
i b
n a
t r
A t
U n i t #
0
1
B i t
31:8
7:0
®
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
9 0 4
2 8
2 4
r v
r v
r v
r v
r v
r v
r v
r v
r v
r v
n a
n a
n a
n a
n a
n a
n a
n a
n a
n a
®
I n t e l X S c a l e
C o r e i n t e r n a l b u s a d d r e s s
+ 2 3 1 C H ( D L A B = x )
+ 2 3 5 C H ( D L A B = x )
D e f a u l t
00 0000h
Reserved
00h
No effect on UART functionality
2 0
1 6
1 2
r v
r v
r v
r v
r v
r v
r v
r v
r v
r v
n a
n a
n a
n a
n a
n a
n a
n a
n a
n a
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 1 3 4 1 a n d 8 1 3 4 2 — U A R T s
8
4
r v
r v
r v
r w
r w
r w
r w
r w
r w
r w
n a
n a
n a
n a
n a
n a
n a
n a
n a
n a
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
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
0
r w
n a
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