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Preliminary
UART
S3C2451 RISC MICROPROCESSOR
15-16
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 FIFO STATUS REGISTER
There are four UART FIFO status registers including UFSTAT0, UFSTAT1 UFSTAT2 and UFSTAT3 in the UART
block.
Register Address
R/W
Description
Reset
Value
UFSTAT0
0x50000018
R
UART channel 0 FIFO status register
0x00
UFSTAT1
0x50004018
R
UART channel 1 FIFO status register
0x00
UFSTAT2
0x50008018
R
UART channel 2 FIFO status register
0x00
UFSTAT3
0x5000C018
R
UART channel 3 FIFO status register
0x00
UFSTATn Bit
Description
Initial
State
Reserved [15]
0
Tx FIFO Full
[14]
Set to 1 automatically whenever transmit FIFO is full during
transmit operation
0 = 0-byte
≤
Tx FIFO data
≤
63-byte
1 = Full
0
Tx FIFO Count
[13:8]
Number of data in Tx FIFO
0
Reserved [7]
–
0
Rx FIFO Full
[6]
Set to 1 automatically whenever receive FIFO is full during
receive operation
0 = 0-byte
≤
Rx FIFO data
≤
63-byte
1 = Full
0
Rx FIFO Count
[5:0]
Number of data in Rx FIFO
0