S3C24A0A Datasheet, PDF (211/519 Pages) Samsung semiconductor – 32-BIT RISC MICROPROCESSOR

UART
S3C24A0A RISC MICROPROCESSOR (Preliminary Spec)
UART MODEM CONTROL REGISTER
There are two UART MODEM control registers, UMCON0 and UMCON1, in the UART block.
Register
UMCON0
UMCON1
Address
0x4440000C
0x4440400C
R/W
Description
R/W UART channel 0 Modem control register
R/W UART channel 1 Modem control register
Reset Value
0x0
0x0
UMCONn
Reserved
AFC(Auto Flow Control)
Reserved
Request to Send
Bit
Description
[7:5] These bits must be 0's
[4] 0 = Disable
1 = Enable
[3:1] These bits must be 0's
[0] If AFC bit is enabled, this value will be ignored. In this
case the S3C24A0A will control nRTS automatically.
If AFC bit is disabled, nRTS must be controlled by S/W.
0 = 'H' level (Inactivate nRTS)
1 = 'L' level (Activate nRTS)
Initial State
00
0
00
0
11-14
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.