Datasheet

Power-On-Self Test
1-22 ADSP-21489 EZ-Board Evaluation System Manual
Power-On-Self Test
The power-on-self-test program (POST) tests all EZ-Board peripherals
and validates functionality as well as connectivity to the processor. Once
assembled, each EZ-Board is fully tested for an extended period of time
with a POST. All EZ-Boards are shipped with the POST preloaded into
one of their on-board flash memories. The POST is executed by resetting
the board and pressing the proper push button(s). The POST also can be
used for reference in custom software designs or hardware troubleshoot-
ing. Note that the source code for the POST program is included in the
VisualDSP++ installation directory along with the readme text file, which
describes how the board is configured to run a POST.
Example Programs
Example programs are provided with the ADSP-21489 EZ-Board to dem-
onstrate various capabilities of the product. The programs are installed
with the VisualDSP++ software and can be found in the
<install_path>\214xx\Examples\ADSP-21489 EZ-Board directory. Refer
to the readme file provided with each example for more information.
Background Telemetry Channel
The USB debug agent supports the background telemetry channel (BTC),
which facilitates data exchange between VisualDSP++ and the processor
without interrupting processor execution.
The BTC allows you to read and write data in real time while the proces-
sor continues to execute. For increased performance of the BTC,
including faster reading and writing, please check our latest line of proces-
sor emulators at:
http://www.analog.com/en/embedded-processing-dsp/sharc/USB-EMU-