AT91SAM7S32-AI ATMEL [ATMEL Corporation], AT91SAM7S32-AI Datasheet - Page 227

• Manufacturer Part Number: AT91SAM7S32-AI
• Description: AT91 ARM Thumb-based Microcontrollers
• Manufacturer: ATMEL [ATMEL Corporation]

Figure 82. SPI Transfer Format (NCPHA = 1, 8 bits per transfer)
Figure 83. SPI Transfer Format (NCPHA = 0, 8 bits per transfer)
6071A–ATARM–28-Oct-04
SPCK cycle (for reference)
SPCK cycle (for reference)
(from master)
(from master)
(from slave)
(CPOL = 0)
(CPOL = 1)
(from slave)
(CPOL = 0)
(CPOL = 1)
(to slave)
(to slave)
SPCK
SPCK
MOSI
MISO
SPCK
SPCK
MOSI
MISO
NSS
NSS
* Not defined, but normally MSB of previous character received.
*
* Not defined but normally LSB of previous character transmitted.
MSB
1
1
MSB
MSB
MSB
2
2
6
6
6
6
3
3
5
5
5
5
4
4
4
4
4
4
AT91SAM7S32 Preliminary
5
5
3
3
3
3
6
6
6
2
2
2
2
7
7
1
1
1
1
8
LSB
LSB
8
LSB
LSB
*
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