Analog Devices ADSP-BF707 EZ-KIT Lite Manual page 39

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Figure 2-3 shows the equivalent circuit to
ical switches that are in the same package. Notice the default is shown by
black boxes located closer to the
connect these switches, physically move the switch to the
Figure 2-3. Example of Mechanical Switch Equivalent to
Figure 2-4 shows a bus switch example, reference designator UC (Pericom
PI3LVD512ZHE), selecting between lettered functionality and numbered
functionality. The signals on the left side are multiplexed signals with
naming convention
letter_number
signals separated into letter and number, with the number on the lower
group (eg. ) and the letter on the upper group (eg.
0B1
setting is controlled by the signal
low. This selects the number signals on the right to be connected to the
multiplexed signals on the left by default. In this example, the Microchip
IO expander is not shown but controls the signal
and allows the user to change the selection through software.
Figure 2-5 shows the equivalent circuit to
ical switches. Notice the default for reference designators
illustrated by black boxes located closer to the
enable the number signals by default. Also notice the default setting for
reference designators
instead of the numbers, the user physically changes all switches on
to the position and all switches on
SWD OFF
ADSP-BF707 EZ-KIT Lite Evaluation System Manual
ADSP-BF707 EZ-KIT Lite Hardware Reference
Figure 2-2
label of the switches. In order to dis-
ON
. The right side of the circuit shows the
CONTROL_LETTER_NUMBER
Figure 2-4
and is . In order to connect the letters
SWE SWF OFF
SWE
but utilizes mechan-
position.
OFF
Figure 2-2
). The default
0B2
which is pulled
CONTROL_LETTER_NUMBER
but utilizes mechan-
and is
SWC SWD
label of the switches to
ON
and
SWC
and to the position.
SEF ON
2-5