at91cap7e ATMEL Corporation, at91cap7e Datasheet - Page 37

• Manufacturer Part Number: at91cap7e
• Description: Customizable Microcontroller
• Manufacturer: ATMEL Corporation

10.4.2
10.4.3
10.4.3.1
10.4.3.2
10.4.3.3
10.4.3.4
10.4.3.5
10.4.3.6
10.4.3.7
10.4.3.8
8549A–CAP–10/08
PIO Controller B Multiplexing
Resource Multiplexing
NAND Flash Interface
Compact Flash Interface
USARTs
Clock Outputs
Interrupt Lines
EBI
32-bit Data Bus
SPI
Table 10-2.
If not required, the NWAIT function (external wait request) can be deactivated by soft-ware
allowing this pin to be used as a PIO. Use of the NWAIT function prevents use of the Debug
Unit.
Using a 32-bit Data Bus prevents:
Using the NAND Flash interface prevents using the NCS3 and USART0.
Using the CompactFlash interface prevents using the USART0.
Using the SPI prevents use of NCS6, NCS7, and the ADC external trigger.
Using the USART0 prevents use of CompactFlash or NAND Flash.
Using the USART1 prevents using a full 32-bit bus for the EBI.
Using the clock outputs prevents use of either higher EBI address bits or a full 32-bit data bus
(see table 10-2).
Using FIQ prevents using the Debug Unit.
Using IRQ0 prevents the use of SPI_NPCS0.
Using IRQ1 prevents the use of SPI_NPCS1.
PIO Controller A
I/O Line
PA29
PA30
PA31
• The PIOB Port is part of the FPGA Interface, and its multiplexing is determined by that
• using the three Timer Counter channels’ outputs and trigger inputs
• using the USART1
• using two of the clock outputs (APMC_PCK2 and APMC_PCK3)
interface (see section
Multiplexing on PIO Controller A
Peripheral A
D29
D30
D31
11.4.2 ”PIO Controller B Multiplexing” on page
Peripheral B
TIMER2_TIOA2
TIMER1_TIOB1
TIMER2_TIOB2
Reset State
AT91CAP7E
47).
37