AT91SAM9G45-EKES Atmel, AT91SAM9G45-EKES Datasheet - Page 63

• Manufacturer Part Number: AT91SAM9G45-EKES
• Description: KIT EVAL FOR AT91SAM9G45
• Manufacturer: Atmel
• Series: AT91SAM Smart ARMr
• Type: MCUr

Specifications of AT91SAM9G45-EKES

• Contents: Board
• Processor To Be Evaluated: SAM9G45
• Data Bus Width: 32 bit
• Interface Type: I2C, SPI, UART
• Maximum Operating Temperature: + 50 C
• Minimum Operating Temperature: - 10 C
• Operating Supply Voltage: 1.8 V to 3.3 V
• For Use With/related Products: AT91SAM9G45
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q4626953

11.4.3
Figure 11-7. NVM Bootloader Sequence Diagram
11.4.3.1
6438F–ATARM–21-Jun-10
NVM Bootloader Sequence
NAND Flash Boot
TWI EEPROM Boot
NAND Flash Boot
No
No
SPI Flash Boot
No
SD Card Boot
No
SAM-BA
Monitor
Device
Setup
The NAND Flash bootloader program uses the EBI CS3. It uses both valid code detections. First
it searches a boot.bin file. Then it analyzes the ARM exception vectors.
The first block must be guaranteed by the manufacturer. There is no ECC check.
After NAND Flash interface configuration, the Manufacturer ID is read. If it is different from 0xFF,
the Device ID is read, else, the NAND Flash boot is aborted. The Boot program contains a list of
SLC small block Device ID with their characteristics (size, bus width, voltage) (see
the device ID is not found in this list, the NAND Flash device is considered as an SLC large block
and its characteristics are obtained by reading the Extended Device ID byte 3.
Yes
Yes
Yes
Yes
TWI EEPROM to SRAM
NAND Flash to SRAM
SPI Flash to SRAM
SD Card to SRAM
Copy from
Copy from
Copy from
Copy from
Run
Run
Run
Run
NAND Flash Bootloader
SD Card Bootloader
SPI Flash Bootloader
TWI EEPROM Bootloader
AT91SAM9G45
Table
11-1). If
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