Preliminary
S3C2451 RISC MICROPROCESSOR
UART
15-9
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
UART SPECIAL REGISTERS
UART LINE CONTROL REGISTER
There are four UART line control registers including ULCON0, ULCON1, ULCON2 and ULCON3 in the UART
block.
Register Address
R/W
Description
Reset
Value
ULCON0 0x50000000
R/W
UART
channel
0 line control register
0x00
ULCON1 0x50004000
R/W
UART
channel
1 line control register
0x00
ULCON2 0x50008000
R/W
UART
channel
2 line control register
0x00
ULCON3 0x5000C000
R/W
UART
channel
3 line control register
0x00
ULCONn Bit
Description
Initial
State
Reserved [7]
–
0
Infrared Mode
[6]
Determine whether or not to use the Infrared mode.
0 = Normal mode operation
1 = Infrared Tx/Rx mode
0
Parity Mode
[5:3]
Specify the type of parity generation and checking during UART
transmit and receive operation.
0xx = No parity
100 = Odd parity
101 = Even parity
110 = Parity forced/checked as 1
111 = Parity forced/checked as 0
000
Number of Stop
Bit
[2]
Specify how many stop bits are to be used for end-of-frame
signal.
0 = One stop bit per frame
1 = Two stop bit per frame
0
Word Length
[1:0]
Indicate the number of data bits to be transmitted or received per
frame.
00 = 5-bits 01 = 6-bits
10 = 7-bits 11 = 8-bits
00