Datasheet

 2017 Microchip Technology Inc. DS60001516A-page 395
SAM9G20
29.7 Serial Peripheral Interface (SPI) User Interface
Table 29-3: 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
0x004C–0x00F8 Reserved – – –
0x100–0x124 Reserved for the PDC – – –