s3c2410a Samsung Semiconductor, Inc., s3c2410a Datasheet - Page 320

• Manufacturer Part Number: s3c2410a
• Description: 16/32-bit Risc Arm Microprocessor
• Manufacturer: Samsung Semiconductor, Inc.

UART
UART MODEM STATUS REGISTER
There are two UART modem status registers including UMSTAT0 and UMSTAT1 in the UART block.
11-18
Delta CTS
Reserved
Clear to Send
UMSTAT0
UMSTAT1
Register
Reserved
UMSTAT0
Read_UMSTAT
Delta CTS
0x5000001C
0x5000401C
0x5000801C
Address
nCTS
[3:1]
Figure 11-8. nCTS and Delta CTS Timing Diagram
Bit
[4]
[0]
Indicate that the nCTS input to the S3C2410A has
changed state since the last time it was read by CPU.
(Refer to Figure 11-8.)
0 = Has not changed
1 = Has changed
0 = CTS signal is not activated (nCTS pin is high.)
1 = CTS signal is activated (nCTS pin is low.)
R/W
R
R
–
UART channel 0 Modem status register
UART channel 1 Modem status register
Reserved
Description
Description
Reset Value
Initial State
Undef
0x0
0x0
S3C2410A
0
0
0