Atmel Evaluation Kit AT91SAM9X25-EK AT91SAM9X25-EK Data Sheet

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SAM9X25 [DATASHEET]

11054E–ATARM–10-Mar-2014

Before performing the jump to the application in internal SRAM, all the PIOs and peripherals used in the boot program 
are set to their reset state.

PIO Driven during Boot Program Execution

NAND

EBI CS3 SMC

NANDOE

PIOD0

EBI CS3 SMC

NANDWE

PIOD1

EBI CS3 SMC

NANDCS

PIOD4

EBI CS3 SMC

NAND ALE

A21

EBI CS3 SMC

NAND CLE

A22

EBI CS3 SMC

Cmd/Addr/Data 

D[16:0]

SD Card

MCI0

MCI0_CK

PIOA17

MCI0

MCI0_D0

PIOA15

MCI0

MCI0_D1

PIOA18

MCI0

MCI0_D2

PIOA19

MCI0

MCI0_D3

PIOA20

SPI Flash

SPI0

MOSI PIOA10

SPI0

MISO

PIOA11

SPI0

SPCK

PIOA13

SPI0

NPCS0

PIOA14

SPI0

NPCS1

PIOA7

TWI0 EEPROM

TWI0

TWD0

PIOA30

TWI0

TWCK0

PIOA31

SAM-BA Monitor

DBGU

DRXD

PIOA9

DBGU

DTXD

PIOA10