参数资料
型号: XR68C681CP
厂商: Exar Corporation
文件页数: 10/75页
文件大小: 0K
描述: IC UART CMOS DUAL 40PDIP
产品变化通告: Leaded UART, V&I Obsolescence 11/Apr/2011
标准包装: 9
特点: *
通道数: 2,DUART
FIFO's: 1 字节,3 字节
电源电压: 5V
安装类型: 通孔
封装/外壳: 40-DIP(0.600",15.24mm)
供应商设备封装: 40-PDIP
包装: 管件
XR68C681
<
ISR[3] Counter Ready
# #2 $" . .( ( %
#M1N ' ' '&' + % %C
( ,1 ( #M1N ( '$ &
(3(- H, 82I '$ * ( ($"
( #2 $" H, 82I
'$ ( % .
# 82 $" (% ( (% % .
'% ( ' / $ (% '$
. (% %$ & H, 82I '$
A .( (% ( 82 $" (%
'$ ( % '
ISR[2]: Delta Break Indicator - Channel A
%%( + (% ( ($('% ' '(
% $'$ -((- $ + '($ *3
* (% ( (% '$ , (3% '
H22 *27 9802 #82 ,I '$
(+( ( .% %%
*27 '$((" % % Section G.2
ISR[1] RXRDYA/FFULLA - Channel A Receiver
Ready or FIFO Full
+'( + (% ( (% %'$ & -(-
M/N
#+ -$ % '( $&
($(' 5E" (% ( ($('% (% %
'' + $ ( 9" $ (% $& $ &
, (% ( (% % '' (% %+$
+ 9 $ (% '$ ,
$% H%I 9 #+ %( ''%
( 9 + $ (" ( ( % -(
+ 9 (% H$I
#+ (% ( (% -$ % # 9 + ($('
::" ( (% % '' (% %+$ +
9 $ & %+$ ''
'%% 9 ' + # (% '$ ,
$% 9 #+ '' (% ((- ( '%
9 (% +" (% ( ( % -( + $
(" '' (% $$ ( 9
ISR[0]: Channel A Transmitter Ready
(% (" %" ($('% 9 (% & $ (%
$& '' '' + , ( (%
'$ , (% '' 9K
$ (% % -(" '' (% %+$
5E (% % %( (% (((&
$ $ (% '$ %( (% $(%$
'% $$ ( 9 ( %( (%
$(%$ ( %($
C.2 Interrupt Mask Register (IMR)
( %3 -(% (% HA( &I -(%
(' % % %' '$((% (
'% (%% ( C%
'%% # $%" % % ( +
%3(- '3(- '( '$((% + '%(-
(%% ( C% +"
(+ + # (% %%(& % % #
9" + '%%" ( + + # (%
%$ ( +(-
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++
J
J++
J
J++
J
J++
J
J++
J
J++
J
J++
J
J++
J
Table 6. IMR Bit Format
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