Electret Microphone Select Switch (Sw4); Uart Enable Switch (Sw5); Adsp-21371 Ez-Kit Lite Evaluation System Manual; Loopback Test Switches (Sw6 And Sw14) - Analog Devices Lite ADSP-21371 EZ-KIT System Manual

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Electret Microphone Select Switch (SW4)

To connect an electret microphone to audio input, place all positions of
. The default switch position is all
SW4 ON
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 (
DPI pins of the processor. When
Table 2-5) can be used on the expansion interface.
Table 2-5. UART Enable Switch (SW5)
Switch Position
1
1 (OFF )
2 (ON)
3 (OFF)
4 (ON)
1 Bold typeface denotes the default setting.

Loopback Test Switches (SW6 and SW14)

The loopback test switch (
The second loopback test switch (
the board. These switches are used for testing only; all switch positions
should remain .
OFF

ADSP-21371 EZ-KIT Lite Evaluation System Manual

ADSP-21371 EZ-KIT Lite Hardware Reference
OFF
) disconnects the UART signals from the
SW5
is , its associated DPI signal (see
SW5 OFF
EZ-KIT Lite Signal
CTS
RX
RTS
tied to
T2IN R2OUT
) is located at the top left side of the board.
SW6
) is located at the top right side of
SW14
. When is all , a DC
SW4 ON
Processor Signal
DPI12
DPI10
DPI11
N/A
2-11