Nuvoton NUC970 series, Technical Reference Manual, Page: 452 / 1251

NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 452 - Revision V1.30
NUC97
0
T
E
CHNIC
A
L
RE
F
E
RE
N
CE
MA
NUA
L
UART n Line Control Register (UAn_LCR)
Register Offset R/W Description Reset Value
UAn_LCR
n=0,1,2,3,4,5,6,7
,8,9,10
U0x00C R/W UART n Line Control Register 0x0000_0000
31 30 29 28 27 26 25 24
Reserved
23 22 21 20 19 18 17 16
Reserved
15 14 13 12 11 10 9 8
Reserved
7 6 5 4 3 2 1 0
Reserved BCB SPE EPE PBE NSB WLS
Bits Description
[31:7] Reserved Reserved.
[6] BCB
Break Control
0 = The serial data output (TX) is not forced to the Spacing State (logic 0).
1 = The serial data output (TX) is forced to the Spacing State (logic 0).
Note: This bit acts only on TX and has no effect on the transmitter logic.
[5] SPE
Stick Parity Enable Control
0 = Stick parity Disabled.
1 = If bit 3 and 4 are logic 1, the parity bit is transmitted and checked as logic 0. If bit 3 is 1
and bit 4 is 0 then the parity bit is transmitted and checked as 1.
[4]
EPE
Even Parity Enable Control
0 = Odd number of logic 1’s is transmitted and checked in each word.
1 = Even number of logic 1’s is transmitted and checked in each word.
Note: This bit is effective only when bit 3 (parity bit enable) is set.
[3] PBE
Parity Bit Enable Control
0 = No parity bit.
1 = Parity bit is generated on each outgoing character and is checked on each incoming
data.
[2] NSB
Number of
“STOP Bit”
0= One “ STOP bit” is generated in the transmitted data.
1= One and a half “ STOP bit” is generated in the transmitted data when 5-bit word length
is selected;.
Note:
Two “STOP bit” is generated when 6-, 7- and 8-bit word length is selected.
[1:0] WLS
Word Length Selection
00 = 5-bit character length.