Power Measurements; Power-On-Self Test - Analog Devices EZ-Board ADSP-BF518F Manual

Power Measurements

Several locations are provided for measuring the current draw from vari-
ous power planes. Precision 0.1 ohm shunt resistors are available on the
VDDINT, VDDEXT, VDDMEM, and VDDFLASH voltage domains.
For current draw measuments, the associated jumper (
removed. Once the jumper is removed, voltage across the resistor can be
measured using an oscilloscope. Once voltage is measured, current can be
calculated by dividing the voltage by 0.1. For the highest accuracy, a dif-
ferential probe should be used for measuring voltage across the resistor.
For more information, see
"VDDEXT Power Jumper (P9)" on page
Jumper (P10)" on page
page 2-17.

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 for a custom software design 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.
ADSP-BF518F EZ-Board Evaluation System Manual
Using ADSP-BF518F EZ-Board
"VDDINT Power Jumper (P8)" on page
2-17, and "VDDFLASH Power Jumper (P11)" on
P8—11
2-17, "VDDMEM Power
) must be
2-16,
1-23