Specifications
Multi
Slavo
Product
Re£eroncQ
Henual
Appendix
H
DUAL
ASVNC
..
IRONOUS
RECEIVER/TRANSMITTER
(DUARij
SCN268i
SERIES
M"1A
MA1.
MA2A
MA21
CSAA
CSAI
CRA
CAD
SAA
SAl
OPe
..
ACA
IPCA
Tablo 2
REGISTER
BIT FORMATS
BIT7
OITO
OITS
0lT4
DIT3
BIT2
01T1
BITO
AX
RTS
RXINT
ERROR
PARITY MODE
PARITY
OITS
PER CHAR.
CONTROL
SELECT
MODE TYPE
0
...
00
0=
RXROV
0= char
00
=
with
panty
0=
even
00=5
1
=yos
1 = FFULL
1
=
block
01
= force parity
1
=odd
I
01
=6
10
= no parity
10=
7
11
=
multi·drop
mode
11
= 8
BIT7
0lT6
BIT5 BIT4
BIT3
BIT2
0lT1
BITO
CHANNEL
MODE
Tx
RTS
CTS
STOP
OIT
LENGTH-
CONTROL ENAOLE Tx
00=
Normal
0=
no
0=
no
0=
0.563
4 = 0.813
8 = 1.563
C=
1.813
01::
Auto
echo
1 =
,es
1 = yes 1 = 0.625
5=
0.875
9=
1.625
0=1.875
10=
Local
loop
2 = 0.688
6=
0.9.38
A=
1.688
E=
1.938
11
= Remote
lOOp
3=
0.750
7 = 1.000
B=
1.750
F=2.000
'''1212
0 S
'a
••
I".'lnown
lor
0-7
,I
~h.~n81
,~
~'""Q'lmrr.eO
'~,!)
o,u
..
:~
.• ,
BIT7
OITO
OITS
0lT4
BIT3
BIT2
BIT1
BITO
RECEIVER CLOCK SELECT
TRANSMITTER CLOCK SELECT
See toxt
See
lexl
BIT7
BITO
BIT5
BIT4 BIT3
8112
BIT1
BITO
MISCELLANEOUS COMMANDS
"DISABLE
Tx
ENABLE Tx
DISABLE Rx ENABLE Rx
not
used-
must
bo 0
See
loxt
0=
no
0=
no
0=00
0=00
, = yes
.
1
=yes
, = yes
1
=yes
BIT7
0lT6
BIT5
0lT4
BIT3 BIT2
BIT1
OITO
RECEIVED FRAMING
PARITY OVERRUN
TxEMT
TxRDV
FFULL RxRDV
OREAK ERROR ERROR ERROR
O=no
0=
no
0=
no
0=
no
0=
no
0=
no
O=no
0=00
1
:II
~es
1 = yes 1 = yes
1.:
yes
1 = yes
1
= yes
1 = yes
1
=yes
.
'T"
•••
~I.'",
O,II.r
••
""dnOdd!o
Ine
Cc"e~ponCI:'~
:.1'.
;h.r.cto,.n
:"0
,,:0 ...
FIFO"
'Ud
01,,,_
S~~'UI
:,,;;,\t.,
p'c.,c!es
'~es.
O
.•
s
:15"'0"'
'''''~D
01
,lie
~IFO
.og.,".'
"",n
D,".0
T"".
o',s
.I'"
~I".reo
0)
a 'esll' .rro, Sli:".
c~"'~."C
In
crl'ICle'
'1'1,,12.
'ney
.1<e
·l.SCI'~ad
..
~en
:~
•
.;(mesoond.ng
".I'.
c,..r.c
••
r
's
'.ad
I,om
,,..
F!FO.
BIT7
BIT8
BIT5 BIT4 BIT3
0lT2
BIT1
BITO
OP7
OPO
OPS
OP4 OP3 OP2
O=OPR[7]
O=OPR[6]
O=OFR(S)
0=
OPR[")
00=
OPR(3)
00=
OPRI2}
1.TxROVB
1 = TxROVA
1 = RxROVI 1 = RxROV'
01
=
CIT
OUTPUT
01
= TxCA
116X)
FFULLB FFULLA
10=TACBllX)
10
= TxCA
('X)
11
=
RACB
('X)
11
= RxCA
(IX)
BIT7
BITO
BIT5 BIT4
BIT3
BIT2 BIT1
OITO
BRG SET
COUNTERITIMER
DELTA DELTA DELTA
DELTA
SELECT MODE AND SOURCE IP31NT IP21NT IP11NT
IPO
INT
0=5ell
See table 4
0=
off
0=
oil
0=
off
0=0
'
1
1
=sot2
1
=on
1
=on
1
=on
l=on
BIT7
BITO
BIT5
BIT4
BIT3
0lT2
BIT1
BITO
DELTA DELTA DELTA DELTA
IP3 IP2
IP1
IPO
IP3
IP2
IP1
IPO
0=
no
0=
no
0=
no
0=
no
O=low
O=low
0=
low
O=low
1
=yes
1 = yes 1 = yes
1.:
yes
1 = hIgh
1
=
high
1 =
high
1
:hiQh
Signetics
2681
DUART
Device
Speci~icationa
Page
H-7