Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet
Product codes
AT91SAM9N12-EK
632
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
36.8
Serial Peripheral Interface (SPI) User Interface
Table 36-5. 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
0x40 - 0xE0
Reserved
–
–
–
0xE4
Write Protection Control Register
SPI_WPMR
Read-write
0x0
0xE8
Write Protection Status Register
SPI_WPSR
Read-only
0x0
0x00EC - 0x00F8
Reserved
–
–
–
0x00FC
Reserved
–
–
–