Power-On-Self Test
1-10
ADSP-BF706 EZ-KIT Mini Evaluation System Manual
Power-On-Self Test
The Power-On-Self-Test Program (POST) tests all EZ-KIT Mini periph-
erals and validates functionality as well as connectivity to the processor.
Once assembled, each EZ-KIT Mini is fully tested for an extended period
of time with POST. All EZ-KIT Mini boards are shipped with POST pre-
loaded into flash memory. The POST is executed by resetting the board
and pressing the proper push button(s). The POST also can be used as a
reference for a custom software design or hardware troubleshooting.
Note that the source code for the POST program is included in the
ADSP-BF706 EZ-KIT Mini Board Support Package along with the
readme.html
file that describes how the board is configured to run POST.
Power Architecture
The ADSP-BF706 EZ-KIT Mini has two methods to power the board—
through the debug agent’s USB mini connector (
ZP1
) or through the
micro USB connector (
P8
) attached to the ADSP-BF706 processor.
By selecting the jumper positioning on
JP2
, the power source can be
swapped between the two. Only change the
JP2
jumper setting when both
USB cables are removed.
• Method 1. To configure the board to use the 5V power from the
debug agent’s USB mini connector, set
JP2
to positions
1
and
2
(labeled
DA
).
• Method 2. To configure the board to use power from the USB
micro connector, set
JP2
to positions
2
and
3
(labeled
706
).
The debug agent can be powered separately, even with the
JP2
setting of
the
706
as the power source (jumper on positions
2
and
3
), by inserting a
USB cable connected to a PC in both the micro and mini USB connector.
