NS16C2552 Datasheet, PDF (17/43 Pages) National Semiconductor (TI) – Dual UART with 16-byte/64-byte FIFOs and up to 5 Mbit/s Data Rate

6.0 Register Set (Continued)
TABLE 10. LCR (0x3) (Continued)
Bit Name
R/W
Bit
Default
Def
Description
2
Tx/Rx
R/W
Tx and Rx Stop-bit Length Select
Stop-bit
Length Sel
0
This bit specifies the number of Stop bits transmitted with each serial character.
LCR[2] Word Length Sel Stop-bit Length
1
6,7,8
=2
1
5
= 1.5
0
5,6,7,8
= 1(Default)
Stop-bit length is measured in bit time.
1:0
Tx/Rx Word
R/W
Tx and Rx Word Length Select
Length Sel
0
These two bits specify the word length to be transmitted or received.
LCR[1]
1
1
0
0
LCR[0]
1
0
1
0
Word Length
=8
=7
=6
= 5 (Default)
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