Analog Devices ADSP-21369 Loop-Back Test Switches SW6 and SW14, Push Button Enable Switch SW7

Switch Settings

Table 2-5. UART Enable Switch (SW5)

Switch Position		EZ-KIT Lite Signal	Processor Signal
1	(OFF1)	CTS	DPI12
2	(ON)	RX	DPI10
3	(OFF)	RTS	DP11
4	(ON)	T2IN tied to R2OUT	N/A

1 Bold typeface denotes the default setting.

Loop-Back Test Switches (SW6 and SW14)

The loop-back test switch SW6 is located at the top left side of the board. The second loop-back test switch, SW14, is located at the top right side of the board. These switches are used only for testing; all switch positions should be OFF.

Push Button Enable Switch (SW7)

The push button enable switch (SW7) disconnects the push buttons from the corresponding processor pins. This allows the signals to be used for another purpose. Table 2-6shows the SW7 connections. By default, all position of the SW7 switch are ON, allowing the push buttons to function as designed.

Table 2-6. Push Button Enable Switch (SW7)

Switch Position	Push Button Label	Push Button Reference Designator	Processor Pin
1	PB1	SW8	FLAG1/~IRQ
2	PB2	SW11	FLAG0/~IRQ0
3	PB3	SW10	DAI19
4	PB4	SW9	DAI20

2-12 ADSP-21369 EZ-KIT Lite Evaluation System Manual