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Push Buttons and Switches
Table 2-17. Multiple-Processor Configuration (Cont'd)
Switch Position
SW19.5
SW19.6
SW19.7
SW19.8
SW20.1
SW20.2
SW21.1
SW21.2
SW22.1
SW22.2
Headphone Enable Switch (SW23)
The headphone enable switch (
to the 3.5 mm headphone connector (
enable switch is disabled. To use the headphones, set
more information, see "Headphone Out Connector (J8)" on page 2-26.
Audio Loopback Switches (SW24–25)
The audio loopback switches (
The switches loop back any analog signal generated from the AD1939's
digital-to-analog converter (DAC) circuit to analog-to-digital converter
(ADC) circuit.
2-18
Main EZ-Board
Attached to Emulator
ON
ON
ON
ON
ON
OFF
OFF
ON
OFF
ON
SW23
SW24
ADSP-21479 EZ-Board Evaluation System Manual
EZ-Board(s)
Not Attached to Emulator
OFF
ON
OFF
ON
OFF
OFF
OFF
ON
ON
OFF
) connects the AD1939's
). By default, the headphone
J8
SW23
and
) are used for testing only.
SW25
circuit
OUT3
to all
.
For
ON
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