Datasheet

326
6120F–ATARM–03-Oct-06
AT91SAM7X512/256/128 Preliminary
30.7 USART User Interface
Table 30-12. USART Memory Map
Offset Register Name Access Reset State
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 Receiver Holding Register US_RHR Read-only 0x0
0x001C Transmitter 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
0x5C - 0xFC Reserved – – –
0x100 - 0x128 Reserved for PDC Registers – – –