Samsung S3C6400X User Manual page 1010

S3C6400 RISC MICROPROCESSOR
UCONn Bit
Clock Selection [11:10] Select PCLK or EXT_UCLK0
Tx Interrupt Type [9]
Rx Interrupt [8]
Type
Rx Time Out [7]
Enable
Rx Error Status [6]
Interrupt Enable
Loop-back Mode [5]
Send Break [4]
Signal
Transmit Mode [3:2]
Receive Mode [1:0]
baud rate.
x0 = PCLK : DIV_VAL
01 = EXT_UCLK0: DIV_VAL
11 = EXT_UCLK1: DIV_VAL
Interrupt request type.
0 = Pulse (Interrupt is requested as soon as the Tx buffer becomes
empty in Non-FIFO mode or reaches Tx FIFO Trigger Level in FIFO
mode.)
1 = Level (Interrupt is requested while Tx buffer is empty in Non-
FIFO mode or reaches Tx FIFO Trigger Level in FIFO mode.)
Interrupt request type.
0 = Pulse (Interrupt is requested the instant Rx buffer receives the
data in Non-FIFO mode or reaches Rx FIFO Trigger Level in FIFO
mode.)
1 = Level (Interrupt is requested while Rx buffer is receiving data in
Non-FIFO mode or reaches Rx FIFO Trigger Level in FIFO mode.)
Enable/Disable Rx time-out interrupts when UART FIFO is enabled.
The interrupt is a receive interrupt.
0 = Disable
Enable the UART to generate an interrupt upon an exception, such
as a break, frame error, parity error, or overrun error during a receive
operation.
0 = Do not generate receive error status interrupt.
1 = Generate receive error status interrupt.
Setting loop-back bit to 1 cause the UART to enter the loop-back
mode. This mode is provided for test purposes only.
0 = Normal operation
Setting this bit causes the UART to send a break during 1 frame
time. This bit is automatically cleared after sending the break signal.
0 = Normal transmit
Determine which function is currently able to write Tx data to the
UART transmit buffer register.
00 = Disable
01 = Interrupt request or polling mode
10 = DMA request( request signal 0)
11 = DMA request( request signal 1)
Determine which function is currently able to read data from UART
receive buffer register.
00 = Disable
01 = Interrupt request or polling mode
10 = DMA request( request signal 0)
11 = DMA request( request signal 1)
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.
Description
4)
or EXT_UCLK1
1)
= (PCLK / (bps x 16) ) -1
1)
= (EXT_UCLK 0 / (bps x 16) ) –1
1)
= (EXT_UCLK1 / (bps x 16) ) –1
2)
2)
1 = Enable
1 = Loop-back mode
1 = Send break signal
4)
clock for the UART
UART
Initial State
0
0
0
0
0
0
0
00
00
31-15