Analog Devices ADSP-BF518F EZ-Board Manual page 40

SPI Interface
External serial flash memory is a 16 Mb ST M25P16 device, selected
using the
SPISEL2
nected to the processor; see
page 2-16 for more information. Internal serial flash memory is a 4 Mb
device, selected using an internal
External SPI flash memory is factory programmed with Das U-Boot—the
universal boot loader. Das U-Boot (U-Boot for short) is open source firm-
ware for embedded processors, including the ADSP-BF518F Blackfin
processors. U-Boot can load files from a variety of peripherals, such as a
serial connection, an Ethernet network connection, or flash memories.
U-Boot is executed at system reset, which automatically loads up another
application (such as the Linux kernel or a stand alone application).
U-Boot can parse many types of files on many types of storage devices.
U-Boot is controlled via a serial connection. The default setting is 56700
baud, 8 data bits, No parity, 1 stop bit. See
page 2-21 for information on the serial connector.
For more information about U-Boot, refer to the online documentation
at:
http://docs.blackfin.uclinux.org/doku.php?id=bootloaders:u-boot
For U-Boot support on the Blackfin processors, refer to the online help
forums at:
http://blackfin.uclinux.org/gf/proj-
ect/u-boot/forum/?action=ForumBrowse&forum_id=51
SPI flash can be modified. For instructions, refer to the online help, exam-
ple program included in the EZ-Board installation directory, and U-Boot
documentation. U-Boot includes an SPI flash driver and can be used to
download a new file over Ethernet or serial connection, and write the file
to SPI flash.
1-18
line of the processor. By default, SPI flash is not con-
"SPI FLASH CS Enable Jumper (JP16)" on
SPISSEL
ADSP-BF518F EZ-Board Evaluation System Manual
line of the processor.
"RS-232 Connector (J2)" on
.
.