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PRELIMINARY
S3C6400 RISC MICROPROCESSOR
UART
31-13
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.
INDIVIDUAL REGISTER DESCRIPTIONS
UART LINE CONTROL REGISTER
There are three UART line control registers including ULCON0, ULCON1, ULCON2 and ULCON3 in the UART
block.
Register
Address
R/W
Description
Reset Value
ULCON0 0x7F005000
R/W
UART
channel 0 line control register
0x00
ULCON1 0x7F005400
R/W
UART
channel 1 line control register
0x00
ULCON2 0x7F005800
R/W
UART
channel 2 line control register
0x00
ULCON3 0x7F005C00
R/W
UART
channel 3 line control register
0x00
ULCONn
Bit
Description
Initial State
Reserved [7]
0
Infra-Red Mode
[6]
Determine whether or not to use the Infra-Red mode.
0 = Normal mode operation
1 = Infra-Red 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