DSP56824ADM Technical Summary
Jumper Configuration
MOTOROLA
DSP56824ADM User’s Manual
2-7
2.5.1
Clock Oscillator
A user-replaceable clock oscillator, U12, is provided to allow custom configuration of the
clock for the DSP56824. Any oscillator speed up to the maximum speed of the DSP can be
used. JG9 (see Clock Input Selection on page 2-8) allows using 3.3 V or 5 V oscillators.
2.5.2
LED Indicators
Two on-board Light-Emitting Diodes (LEDs) are provided. LED1 is a power indicator
that shows when power is applied to the DSP56824ADM board. LED2 is a debugging
indicator. See PB14 Indicator LED Configuration on page 2-15 for more information on
LED2. Both LEDs are located next to J7, the power input connector.
2.5.3
Pushbutton Switches
Two on-board pushbutton switches are provided. S1 allows the user to generate a
hardware reset to the DSP56824. The RESET line on the DSP56824 is asserted low when
S1 is depressed. S2 asserts IRQA when it is depressed. S1 and S2 are located near J4 and
J5, the codec input and output connectors.
2.5.4
Test Points
Four on-board test points are provided to allow for voltage reference connections. TP1
and TP2 are connected to analog ground. TP3 is connected to the 3.3 V supply. TP4 is
connected to the 5 V supply.
2.6
JUMPER CONFIGURATION
The DSP56824ADM board includes a number of configuration jumpers that allow the
user to modify the way in which the board is used in a particular application. The
following paragraphs give a detailed description of the function of the jumpers.
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