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XR68C681J-F Datasheet, PDF (17/75 Pages) Exar Corporation – CMOS Dual Channel UART(DUART) | |||
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XR68C681
Bit 7
Input Port
Change
J 8
J E%
Bit 6
Delta Break
B
J 8
J E%
Bit 5
RXRDY/
FFULLB
J 8
J E%
Bit 4
TXRDYB
J 8
J E%
Bit 3
Counter
Ready
J 8
J E%
Bit 2
Delta Break
A
J 8
J E%
Bit 1
RXRDY/
FFULLA
J 8
J E%
Table 5. Interrupt Status Register - (ISR) Bit Format
Bit 0
TXRDYA
J 8
J E%
(
- (
$ ' + % (% (% $+(
$
ISR[7]: Input Port Change of State:
#+ (% ( (% -(' HI"
H'
- + %I %
$'$ #, #,1 (
% % $ %(' (%
(
& $(
- #, (+ #M@N J #M@N (%
'$
, % $ #, *& $(
-
#," % ( $(
4
(
$(($ #
, (
'
-$ %
+(
% +
($ (
%" +(
-
- +
$($ $%'((
+ #," % %
Section E
,%
(
$
(% (
'
$((
"
% % $ (
-%4
A( ( $
( +
!((&
-(%"
M14N #
(% %"
% (% %'(+&(
- (' (
(
% % $ (--
H#
,
-I (
C%
A( -(' HI #M@N
ISR[6] Delta Break Indicator - Channel B:
A
(% ( (% %" ( (
$('% '
* '(
% $'$ -(
(
-
$ + '($ 3
(% ( (% '$ %
, (
3%
'
* H22 *2
7 9
802 #82,I
'
$ (
+(
(
.%
%
% *2
7 '
$((
" % % Section G.2
ISR[5] RXRDYB/FFULLB - Channel B Receiver
Ready or FIFO Full
+
'(
+ (% ( (% %'$ & -(
-
*M/N #+ -$ % '( $&
(
$(' 5E*" ( (
$('% %
' ' + $ (% (
9*
$ (% $& $ &
, (% ( (% %
' ' (%
%+$
+ '($ % (+ -(% 9*
$ (% '$
, $% 9* #+ %(
' '% (
9* + $ (
" ( (
% -(
+ 9* (% H$I
#+ (% ( (% -$ % # (
$(' ::*"
( (% %
' ' (%
%+$ +
9*
$
%+ '%% 9* ' + (%
( (% '$
, $% 9*K
$ &
H(
-I # " 3(
- +
! ' ' #+
' ' (% ((
- (
'% 9* (% +"
(% ( ( % -(
+ $ (
"
' ' (% $$ (
9*
ISR[4] TXRDYB - Channel B Transmitter Ready
(% ("
%" (
$('% 9* (% &
$ (%
$& '' ' ' + , ( (%
'$
, (%
' ' 9*K
$ (% % -(
"
' ' (%
%+$
5E (% %
%( (% (
((&
$
$ (% '$
%( (% $(%$
'% $$ (
9* (
%( (%
$(%$ (
%($
@
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