Datasheet

782
SAM4S Series [DATASHEET]
11100F–ATARM–29-Jan-14
36.8 Universal Synchronous Asynchronous Receiver Transmitter (USART) User Interface
Table 36-16. 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 – – –