SAM3X8E Atmel Corporation, SAM3X8E Datasheet - Page 1422

• Manufacturer Part Number: SAM3X8E
• Manufacturer: Atmel Corporation

45.10.3.1
1422
Master Write Mode
SAM3X/A
Maximum SPI Frequency
Figure 45-16. SPI Master Mode with (CPOL = 0 and NCPHA=1) or (CPOL=1 and NCPHA= 0)
Figure 45-17. SPI Slave Mode with (CPOL=0 and NCPHA=1) or (CPOL=1 and NCPHA=0)
Figure 45-18. SPI Slave Mode with (CPOL = NCPHA = 0) or (CPOL= NCPHA= 1)
The following formulas give maximum SPI frequency in Master read and write modes and in
Slave read and write modes.
NPCS0
NPCSS
NPCSS
SPCK
MISO
MOSI
SPCK
SPCK
SPCK
MISO
MISO
MISO
SPCK
MOSI
MISO
MOSI
MOSI
SPI
SPI
SPI
12
12
14
SPI
SPI
SPI
9
5
5
SPI
SPI
6
6
SPI
10
SPI
SPI
7
7
SPI
SPI
SPI
3
3
11
SPI
SPI
8
8
SPI
SPI
4
4
SPI
SPI
13
13
11057A–ATARM–17-Feb-12
SPI
15