參數(shù)資料
型號: 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): 17/99頁
文件大?。?/td> 1913K
代理商: XR88C681
XR88C681
>
Bit 7
Bit 6
Bit 5
Bit 4
Description
Set Standby Mode (Channel A).
B (% '
$ (% (3$ (
$-(%
" (% $ + ' + %(%"
'(%" '.($ $$(( '('(%
' ( %$&
$
Please note that this command effects the
operation of the entire chip
7 ( (%
%$ & $ % & (3(- C2
#;2 2D '$
Reset IUS Latch (Channel B).
B (% '$
(% (3$ ( * $ -(%"
$
(% (- ( $" ( '%%
#$('# ' %
(%" ( " ( '% #2 --
C(-D
Set Active Mode (Channel A).
B (% '
$ (% (3$ (
$-(%
" (% $ + $& $
$ %% (
Set Z-Mode (Channel B).
B (% '$ (%
(3$ ( * $ -(%"
(% '$(($ ( $
$($ $(%'%%(+ H% ((
( $" ,% %
+ = ( #, '3-$ $('%
Section C.6.2
7 (
Reserved.
Reserved.
Table 3. Miscellaneous Commands, Upper Nibble of all Command Registers,
Unless Otherwise Specified (Cont’d)
# $$(( '$% (' ( -
'$
-(%%"
C$$%%(--$D '$% % '$%
(%$ (
Table 1
" C , 7 20#2
2#70DL
$
+ ($(+($ & (-
C%$$D (
Table 1
'(+('&" % '$% 4
%
++%
72.#2 7
, 72.#2 7
2 , , *# 7
92 , , *# 7
2'+%'$% (3$&($(-
((- $ ( '%$(- $$%%% %
%'(+($ (
Table 1
2!4
72.#27(%(3$&
'$ + $(- $$%% 2
note that this “Read Operation” will not result in placing
the contents of a DUART register on the data bus.
/
Please
& (- ( " ( %% (% '$
(% .( ( ((( '(- $($
$(%'%%(( (+ .("%
%
Section D.2
! + $$%%(--$ '$% (%
C2 , , *#D $
'$ (% (3$ & +(-
$$%% 2
'$" .% (% %(- '( (% CD ((
, ,-(% (%"(( ,
%'(+($ %" '-$ %+
(% '% + ($(($ (%
(( , 8'" (+,NO (% % CD" % +
'%$(-
(" ," (% %
-(' CD
%E&"
, , *#D '$ %
, , ,#7D '$
$(%'%%( ( ( + ,%" %
%
Section F
(%
( + $
/
B
% (3% (%
' (3 +
C2
C92
$($
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