xr16m580im48 Exar Corporation, xr16m580im48 Datasheet - Page 31

• Manufacturer Part Number: xr16m580im48
• Description: 1.62v To 3.63v High Performance Uart With 16-byte Fifo
• Manufacturer: Exar Corporation

REV. 1.0.0
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.
LCR[2]: TX and RX Stop-bit Length Select
The length of stop bit is specified by this bit in conjunction with the programmed word length.
LCR[3]: TX and RX Parity Select
Parity or no parity can be selected via this bit. The parity bit is a simple way used in communications for data
integrity check. See
•
•
4.6
FCR B
Logic 0 = No parity.
Logic 1 = A parity bit is generated during the transmission while the receiver checks for parity error of the
data character received.
0
0
1
1
IT
Line Control Register (LCR) - Read/Write
-7
FCR B
T
0
1
0
1
ABLE
IT
Table 10
-6
9: T
FCR B
RANSMIT AND
0
0
1
1
for parity selection summary below.
IT
BIT-1
BIT-2
-5
0
0
1
1
0
1
1
FCR
1.62V TO 3.63V HIGH PERFORMANCE UART WITH 16-BYTE FIFO
R
0
1
0
1
BIT
ECEIVE
-4
LENGTH
BIT-0
5,6,7,8
W
6,7,8
0
1
0
1
ORD
5
FIFO T
R
ECEIVE
1(default)
31
L
EVEL
14
RIGGER
4
8
T
RIGGER
S
W
TOP BIT LENGTH
(B
ORD LENGTH
5 (default)
1 (default)
T
IT TIME
ABLE AND
1-1/2
6
7
8
2
T
RANSMIT
(
S
))
1(default)
L
L
EVEL
14
4
8
EVEL
T
RIGGER
S
ELECTION
16L580
C
OMPATIBILITY
XR16M580