Datasheet

674
SAM9X25 [DATASHEET]
11054E–ATARM–10-Mar-2014
35.8 Serial Peripheral Interface (SPI) User Interface
Table 35-5. Register Mapping
Offset Register Name Access Reset
0x00 Control Register SPI_CR Write-only ---
0x04 Mode Register SPI_MR Read-write 0x0
0x08 Receive Data Register SPI_RDR Read-only 0x0
0x0C Transmit Data Register SPI_TDR Write-only ---
0x10 Status Register SPI_SR Read-only 0x000000F0
0x14 Interrupt Enable Register SPI_IER Write-only ---
0x18 Interrupt Disable Register SPI_IDR Write-only ---
0x1C Interrupt Mask Register SPI_IMR Read-only 0x0
0x20 - 0x2C Reserved
0x30 Chip Select Register 0 SPI_CSR0 Read-write 0x0
0x34 Chip Select Register 1 SPI_CSR1 Read-write 0x0
0x38 Chip Select Register 2 SPI_CSR2 Read-write 0x0
0x3C Chip Select Register 3 SPI_CSR3 Read-write 0x0
0x4C - 0xE0 Reserved – – –
0xE4 Write Protection Control Register SPI_WPMR Read-write 0x0
0xE8 Write Protection Status Register SPI_WPSR Read-only 0x0
0x00E8 - 0x00F8 Reserved – – –
0x00FC Reserved – – –