xr16l784iv Exar Corporation, xr16l784iv Datasheet - Page 31

• Manufacturer Part Number: xr16l784iv
• Description: High Performance 2.97v To 5.5v Quad Uart
• Manufacturer: Exar Corporation

xr
REV. 1.2.2
The Line Control Register is used to specify the asynchronous data communication format. The word or
character length, the number of stop bits, and the parity are selected by writing the appropriate bits in this
register.
LCR[1:0]: TX and RX Word Length Select
These two bits specify the word length to be transmitted or received.
4.6
T
Table-A
Table-B
Table-C
Table-D
RIGGER
T
ABLE
Line Control Register (LCR) - Read/Write
FCTR
B
IT
0
0
1
1
T
-7
ABLE
FCTR
B
14: T
IT
0
1
0
1
-6
RANSMIT AND
B
FCR
IT
X
0
0
1
1
0
0
1
1
0
0
1
1
BIT-1
-7
0
0
1
1
B
FCR
IT
0
1
0
1
0
1
0
1
0
1
0
1
X
-6
R
ECEIVE
BIT-0
B
FCR
0
1
0
1
IT
X
0
0
0
1
1
0
0
1
1
-5
FIFO T
31
BIT
FCR
HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART
X
0
0
1
0
1
0
1
0
1
-4
RIGGER
W
T
Programmable
RIGGER
5 (default)
via RXTRG
ORD LENGTH
1 (default)
R
register.
T
ECEIVE
ABLE AND
6
7
8
14
16
24
28
16
56
60
4
8
8
8
L
EVEL
L
Programmable
EVEL
via TXTRG
1 (default)
T
T
register.
RANSMIT
L
RIGGER
EVEL
16
24
30
16
32
56
8
8
S
ELECTION
16C550, 16C2550,
16C2552, 16C554,
16C580
16C650A
16C654
16L2752, 16L2750,
16C2852, 16C850,
16C854, 16C864
C
OMPATIBILITY
XR16L784