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AT91SAM9261 датащи(PDF) 30 Page - ATMEL Corporation |
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AT91SAM9261 датащи(HTML) 30 Page - ATMEL Corporation |
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30 / 43 page ![]() 30 6062KS–ATARM–15-Jan-09 AT91SAM9261 Preliminary • using the three Timer Counter channels’ outputs and trigger inputs • using the SSC2 10.3.1.5 NAND Flash Interface Using the NAND Flash interface prevents: • using NCS3, NCS6 and NCS7 to access other parallel devices 10.3.1.6 Compact Flash Interface Using the CompactFlash interface prevents: • using NCS4 and/or NCS5 to access other parallel devices 10.3.1.7 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. 10.3.1.8 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. 10.3.1.9 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. 10.3.1.10 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. |
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