參數(shù)資料
型號(hào): XR88C681
廠商: Exar Corporation
英文描述: CMOS DUAL CHANNEL UART (DUART)
中文描述: CMOS雙通道UART(杜阿爾特)
文件頁數(shù): 18/99頁
文件大小: 1913K
代理商: XR88C681
XR88C681
=
C. INTERRUPT CONTROL BLOCK
# *'3 % % &
(
C# (D (
('$%
#7" (' & -$ %%$
''' + & + +(- %4
( E%
%(-
%( 8$ -(% * $&
'( 8$ -(% * $&
'( # *
2$ + '($ *3 ( % *
2$ + .( '$
- + ( (%" #," #," #," #,1
# *'3'%(%%+ #%
-(%% #" # %3 -(%% #"
%3$ # % -(%% # $
# ;' -(% #;
-(%%" ( $$%% '( ((
Table 4
(%% %
Register
Description
Address Location
(in DUART Address Space)
#
#
#
#;
# % -(%
# %3 -(%
%3$ # % -(%
# ;' -(%
6
/
$ &
6
/
B( &
/
$ &
/
Table 4. Listing and Brief Description of Interrupt System Registers
$ % + ' + % -(%%
$+($
C.1 Interrupt Status Registers (ISR)
'%+ #($('% %%+ (
( '$((% #+ & (% (( % -(%%
--$ C(-D" '%$(- '$(( % (%
''(- # -" '% + # (($('
'%%" %' %+ #
E% +
%(' ( +
%$ -( & $(-
( (% -(% # %3$ # %
-(%
(+ +
Table 5
4
+" & (
# (% %$ (
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Input Port
Change
Delta Break
B
RXRDY/
FFULLB
TXRDYB
Counter
Ready
Delta Break
A
RXRDY/
FFULLA
TXRDYA
J 7
J G
J 7
J G
J 7
J G
J 7
J G
J 7
J G
J 7
J G
J 7
J G
J 7
J G
Table 5. ISR Bit Format
$+((( + (- ($ ' + % (% (%
%$
ISR[7]: Input Port Change of State
#+ (% ( (%
$'$ # , (% #, #,1
%(' (% ( & $(- #, (+ #N>O J
#N>O (% '$
, % $ # ,
+(-( -(% #, *& $(- #,"
% ( $(4
-(' CD"
'- + % %
% $
($(($ # , ( '-$ %
+( % + ($ ( %" +(-
- +
$($ $%'(( + #," %
Section F
Please note that in order to enable this Interrupt
Condition, the user must do two things:
B( ( $
!((& -(%" N14O # (% %"
% (% %'(+&(- (' # ,(% %$ (--
C# , -D # E%
( +
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