xr16v2552il32 Exar Corporation, xr16v2552il32 Datasheet - Page 28
xr16v2552il32
Manufacturer Part Number
xr16v2552il32
Description
High Performance Duart With 16-byte Fifo
Manufacturer
Exar Corporation
Datasheet
1.XR16V2552IL32.pdf
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XR16V2552
HIGH PERFORMANCE DUART WITH 16-BYTE FIFO
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
•
•
LCR[4]: TX and RX Parity Select
If the parity bit is enabled with LCR bit-3 set to a logic 1, LCR bit-4 selects the even or odd parity format.
•
•
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.
Logic 0 = ODD Parity is generated by forcing an odd number of logic 1’s in the transmitted character. The
receiver must be programmed to check the same format (default).
Logic 1 = EVEN Parity is generated by forcing an even number of logic 1’s in the transmitted character. The
receiver must be programmed to check the same format.
Table 12
for parity selection summary below.
BIT-1
BIT-2
0
0
1
1
0
1
1
LENGTH
5,6,7,8
W
BIT-0
6,7,8
ORD
0
1
0
1
5
28
S
W
TOP BIT LENGTH
(B
5 (default)
1 (default)
ORD LENGTH
IT TIME
1-1/2
6
7
8
2
(
S
))
REV. 1.0.2
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