ADSP-CM403F EZ-KIT Lite Evaluation System Manual
2-3
ADSP-CM403F EZ-KIT Lite Hardware Reference
User I/O to the processor is provided in the form of two user push buttons
and three LEDs. The software-controlled switches (SoftConfig) facilitate
the switch multi-functionality by disconnecting the push buttons from
their associated processor pins and reusing the pins elsewhere on the
board. See
ADSP-CM403F EZ-KIT Lite Schematic
for more information.
Software-Controlled Switches
(SoftConfig)
On the ADSP-CM403F EZ-KIT Lite, most of the traditional mechanical
switches have been replaced by I
2
C software-controlled switches. The
remaining mechanical switches are provided for changing the boot mode
and push buttons. Reference any
SoftConfig*.c
file found in the installa-
tion directory for an example of how to set up the SoftConfig feature of
the ADSP-CM403F EZ-KIT Lite through software.
The SoftConfig section of this manual serves as a reference to any user
that intends to modify an existing software example. If software provided
from ADI is used, there should be little need to reference this section.
Care should be taken when changing SoftConfig settings not to
create a conflict with interfaces. This is especially true when con-
necting extender cards.
Overview of SoftConfig
In order to further clarify the use of electronic single FET switches and
multi-channel bus switches, an example of each is illustrated and com-
pared to a traditional mechanical switching solution. This is a generic
example that uses the same FET and bus switch components that are on
the EZ-KIT Lite.
After this generic discussion there is a detailed explanation of the Soft-
Config interface specific to the ADSP-CM403F EZ-KIT Lite.
