Atmel Xplained Pro Evaluation Kit ATSAM4E-XPRO ATSAM4E-XPRO Data Sheet
Product codes
ATSAM4E-XPRO
921
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
38.8
Universal Synchronous Asynchronous Receiver Transmitter (USART)
User Interface
User Interface
Table 38-16.
Register Mapping
Offset
Register
Name
Access Reset
0x0000
Control Register
US_CR
Write-only
–
0x0004
Mode Register
US_MR
Read/Write
–
0x0008
Interrupt Enable Register
US_IER
Write-only
–
0x000C
Interrupt Disable Register
US_IDR
Write-only
–
0x0010
Interrupt Mask Register
US_IMR
Read-only
0x0
0x0014
Channel Status Register
US_CSR
Read-only
–
0x0018
Receive Holding Register
US_RHR
Read-only
0x0
0x001C
Transmit Holding Register
US_THR
Write-only
–
0x0020
Baud Rate Generator Register
US_BRGR
Read/Write
0x0
0x0024
Receiver Time-out Register
US_RTOR
Read/Write
0x0
0x0028
Transmitter Timeguard Register
US_TTGR
Read/Write
0x0
0x2C–0x3C
Reserved
–
–
–
0x0040
FI DI Ratio Register
US_FIDI
Read/Write
0x174
0x0044
Number of Errors Register
US_NER
Read-only
–
0x0048
Reserved
–
–
–
0x004C
IrDA Filter Register
US_IF
Read/Write
0x0
0x0050
Manchester Configuration Register
US_MAN
Read/Write
0xB0011004
0x0054–0x005C
Reserved
–
–
–
0x0060–0x00E0
Reserved
–
–
–
0x00E4
Write Protection Mode Register
US_WPMR
Read/Write
0x0
0x00E8
Write Protection Status Register
US_WPSR
Read-only
0x0
0x00EC–0x00FC
Reserved
–
–
–
0x100–0x128
Reserved for PDC Registers
–
–
–