
XR88C681
>
Receiver Errors
#+ '($% % C3D" %$
( + , (" (- 2 2 (% +--$ &
%(-" N/O J #+" ' '( +
''"
%%E (& ''3 (% (''"
,(& 2 ,2 (% +--$ & %(- N6O J #+
8 % +" $ '' !(%$ ( L
$(+ $ % ( '%$(-
5 (L
'' (
(" $ '( 2 2 '$((
( +--$ ( % -(% N<O J (%
(%& %% ( %% + $
(
(& (+ 5 ( (% $ %' '$(( +
( ''($"$ ,(%$'$
, ( %(- %$ (
*3* '$(((% %$ B(% '$(((%
$'$ % (-%
%'L
'($
C'($ *3D '$(( (% +--$ (
% -(% N>O J
C*3D '' (% $$ (
8" + $ (% '($ $$ (
8 (
5 ( %
'$((
8
C3D
1
'%$(-
E%$(+-$$+--$( #
% -(%
C
*3D
(
(%
'
%%E ''% ( $$ ( 8" $
'%$(- C *3D ( '$(( (
5 ( %
C3D '$(("
' -( E%$ (+ -$ $ +--$ (
# % -(%
' -$ - #
E%
99 # $(( !(%% + ( '
5G $(( !(%%
$ !(%% (( 8" $ (% (& ((-
C$D $ $ & ,
!(%% 8 (% '& + $ ' ''
& ''% + ( , % $
C$D #
% ' %' #
E% '' $ (
99 '$(( (
% (%
$ & %(- #NO $
#N6O + % $ *" %'(&
, (+ 5G '( $&
% '' +
99 '$((
5G
$ -(%%
2' ' (% E($ ( % -(%%
%$ ($ ' $ ((- + %
'%
+ % -(%% $(%'%%$ (
( %'(% + $ % 8" $($
$(%'%%( +
%$ (
($ + % -(%%
Section G.3
G.3 Mode Registers, MR1n and MR2n
$ -(%%"
' % .% (% '
% -(%% %
'%
'(E%
$(%'%%$ (
%
%'(+& +
% '+(-
-- ( $ $%3(-
(% + ' + % -(%%
Table 26
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Rx RTS
Control
Rx Interrupt
Select
Error Mode
Parity Mode
Select
Select
Parity
Select Number of Bits per
Character
J 7
J G
J!G
J 99
J'
J *'3
J B( ,(&
J ' ,(&
J 7 ,(&
J ( $
J 2
J $$
J 6
J /
J >
J =
Note:
MR1nforeachchannelisaccessedwhenthechannel’sMRpointerpointstoMR1. ThepointerissettoMR1nbyahardware
RESET or by a “RESET MR POINTER” command invoked via the channel’s command register. After any read or write to
MR1, the MR pointer will automatically point to MR2.
Table 26. Mode Registers - MR1A, MR1B