Datasheet

SAM9261 [DATASHEET]
Atmel-6062O-ATARM-SAM9261-Datasheet_21-Jun-16
30
9.3.1.6 CompactFlash Interface
Using the CompactFlash interface prevents:
 using NCS4 and/or NCS5 to access other parallel devices
9.3.1.7 SPI0 and the MultiMedia Card Interface
As the DataFlash Card is compatible with the SDCard, it is useful to multiplex SPI and MCI. Here, the SPI0 signal
is multiplexed with the MCI.
9.3.1.8 USARTs
 Using the USART1 and USART2 control signals prevents using the ETM.
 Alternatively, using USART0 with its control signals prevents using some clock outputs and interrupt lines.
9.3.1.9 Clock Outputs
 Using the clock outputs multiplexed with the PIO A prevents using the Debug Unit and/or the Two Wire
Interface.
 Alternatively, using the second implementation of the clock outputs prevents using the LCD Controller
Interface and/or USART0.
9.3.1.10 Interrupt Lines
 Using FIQ prevents using the USART0 control signals.
 Using IRQ0 prevents using the NWAIT EBI signal.
 Using the IRQ1 and/or IRQ2 prevents using the SPI1.