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): 46/99頁
文件大?。?/td> 1913K
代理商: XR88C681
XR88C681
</
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C(D$(%%'$$(%<-13
' $+(((% % $
6 '%
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5(( B (% ( (% (-"
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5 J
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==6
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- + , $
Table 14
B ==/
, % ( (%
Pin Number
MN/ MX = 1 (Min Mode)
MN/ MX = 0 (Max Mode)
<
89
).
0
6
89
).
0
/
B
9:
>
.
#
=
.
27
1
92
)
1
#7
)
Table 14. MN/ MX Mode and Function of Pins 24-31 of 8086 CPU Device.
B7.
$
('(% ( (' ==/
==> (' $ '%% 7, # (% $"
%'( % ' === (% E($ -
& $ #. ' % %(-%
5(%" ==/
,(%(-( C!D
(% $ (% ($$ +
'!
, E(% % +
==/
$ 7# 7#(% '((- C%3D (
, '(% ( E% (%4 #7
E% (L $ #7 (%
E% ( #+ ==/
$"
(
,( < %
==/
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%(- % $($ +
=== % '
%%$==='(%%$
C!D $ %% %(-%
C%3D (
, (% (- ( C(D
#7 # '3$- ( (%
Figure 20
8" (+
#7
"
" $
(% (
Table 15
%% '%%
"
"$
S2
S1
S0
Processor State
8288 Active Output
# '3$-
#7
$ #. ,
#
B( #. ,
#B
8
7
$ ''%%
$ &
B( &
B
,%%(
7
Table 15. 8086 Processor State/8288 Bus Controller Active Output as a function of S0, S1 and S2
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