參數資料
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: 71/99頁
文件大?。?/td> 1913K
代理商: XR88C681
XR88C681
>
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Channel Mode
Tx RTS
Control
CTS Enable
Tx
Bit Length
J 7
J 2'
J 9' 9
J 9
J 7
J G
J 7
J G
J 6/1
J /6
J /==
1 J >6
< J =1
6 J =>6
/ J 1=
> J
= J 6/1
J /6
J /==
* J >6
J =1
J =>6
2 J 1=
J
Table 27. Mode Registers - MR2A, MR2B
MR1n[7] - Receiver Request to Send Control
$((&" E% $ (% %%$ -$
& (3(- C2 , , *# 7D
C92 , , *# 7D (
( 8" (+ N>O J (% %"
'( ( '
'(+('&" %(- (% ( (
'( - (+ (% 8 (% + (% C+
'D '(E (% %+ ( (- '(
2%
-( +
Figure 42
%%
'($
E%$
$ +'(
$(- (' (%%
'+(-(
MR1n[6] - Receiver Interrupt Select
(% ( %'% ( 5G %% ( 99
%% ( + '
-(- # E%
," #NO +
$ #N6O + *
%$ % '(( +
MR1n[5] - Error Mode Select
(%('% (+ # %%(%
,2" 2"'($ *3+ #+ (%((%%
CD" (% (' ' (
C'D 2 $
#+ (% (% (% %
(' ' ( ( C*'3D 2 $
(
CD" (%
# '' $ % %% (% & &
'' (% '&
'3 $" % (% % '( -('
+ # #
+ %% + ''% '(- +
# %(' % C222D '$
+ % (%%$
MR1n[4:3] - Parity Mode Select
#+C((&D C+'(&D((%-$"
(& ( (% $$$
'( +% (& ''3 '($ ''%
Section H.2
+ $%'(( + ( $
(
%($ ''% $
MR1n[2] - Parity Type Select
(% ( %'%
2D (% -$ $ % + +'$ (&
( (+ C 2 ,#GD $ (% -$ #
( $ ( %'% % + . +- (
(% ( %
++' (+ C7 ,#GD (% %'$ (
N<41O
2;27 (& (+ CB#8 ,#G
MR1n[1:0] - Bits per Character Select
'% + (% %($ $ '($
( $ +($ + '' (% $% ('$
" ,#G" $ , (%
Mode Register 2 (Channels A and B)
+ ' (% ''%%$ H%
,( (%
''%%
C$%D C(%D $% '- '%
+ (
" (' ''% + &
H%
-(%
%E
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