Datasheet

Switches
2-12 ADSP-21369 EZ-KIT Lite Evaluation System Manual
Electret Microphone Select Switch (SW4)
To connect an electret microphone to audio input, place all positions of
SW4 ON. The default switch position is all OFF. When SW4 is all ON, a DC
offset of 2.5V is added to the signal, and gain of the input amplifiers is
changed from 1x to 10x.
UART Enable Switch (SW5)
The UART enable switch (SW5) disconnects the UART signals from the
DPI pins of the processor. When SW5 is OFF, its associated DPI signal (see
Table 2-5) can be used on the expansion interface.
Loopback Test Switches (SW6 and SW14)
The loopback test switch (SW6) is located at the top left side of the board.
The second loopback test switch,
SW14, is located at the top right side of
the board. These switches are used for testing only; all switch positions
should remain
OFF.
Table 2-5. UART Enable Switch (SW5)
Switch Position EZ-KIT Lite Signal Processor Signal
1 (OFF
1
)
1 Bold typeface denotes the default setting.
CTS DPI12
2 (ON) RX DPI10
3 (OFF) RTS DPI11
4 (ON) T2IN tied to R2OUT N/A