AT91SAM7A1_05 Datasheet, PDF (396/402 Pages) ATMEL Corporation – AT91 ARM Thumb-based Microcontrollers

22.2.1 Fixed Peripheral Select ............................................................. 224
22.2.2 Variable Peripheral Select ........................................................ 225
22.2.3 Chip Selects.............................................................................. 225
22.2.4 Mode Fault Detection ................................................................ 225
22.2.5 Functional Flow Diagram in Master Mode ................................ 226
22.2.6 SPI in Master Mode .................................................................. 227
22.3 Slave Mode ......................................................................................... 228
22.4 PIO Controller ..................................................................................... 228
22.5 Power Management ........................................................................... 228
22.6 Serial Peripheral Interface (SPI) Memory Map ................................... 229
22.6.1 SPI PIO Enable Register .......................................................... 231
22.6.2 SPI PIO Disable Register.......................................................... 231
22.6.3 SPI PIO Status Register ........................................................... 232
22.6.4 SPI PIO Output Enable Register............................................... 233
22.6.5 SPI PIO Output Disable Register.............................................. 233
22.6.6 SPI PIO Output Status Register................................................ 234
22.6.7 SPI PIO Set Output Data Register............................................ 235
22.6.8 SPI PIO Clear Output Data Register......................................... 235
22.6.9 SPI PIO Output Data Status Register ....................................... 236
22.6.10 SPI PIO Pin Data Status Register........................................... 237
22.6.11 SPI PIO Multidriver Enable Register ....................................... 238
22.6.12 SPI PIO Multidriver Disable Register ...................................... 238
22.6.13 SPI PIO Multidriver Status Register ........................................ 239
22.6.14 SPI Enable Clock Register...................................................... 240
22.6.15 SPI Disable Clock Register ..................................................... 240
22.6.16 SPI Power Management Status Register ............................... 241
22.6.17 SPI Control Register ............................................................... 242
22.6.18 SPI Mode Register .................................................................. 243
22.6.19 SPI Status Register................................................................. 245
22.6.20 SPI Interrupt Enable Register ................................................. 247
22.6.21 SPI Interrupt Disable Register ................................................ 247
22.6.22 SPI Interrupt Mask Register .................................................... 249
22.6.23 SPI Receive Data Register ..................................................... 250
22.6.24 SPI Transmit Data Register .................................................... 251
22.6.25 SPI Chip Select Register x [x = 0..3]....................................... 252
22.7 Timing Diagrams ................................................................................ 254
x AT91SAM7A1
6048A–ATARM–03-Mar-05