Analog Devices SHARC ADSP-21375, Руководство пользователя

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ADSP-21375 EZ-KIT Lite Evaluation System Manual 2-13
ADSP-21375 EZ-KIT Lite Hardware Reference
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 else-
where on the board.
Table 2-6 shows the
SW7
connections. By default, all
position of the
SW7
switch are
ON
, allowing the push buttons to function as
designed.
ELVIS Oscilloscope Configuration Switch (SW1)
The oscilloscope configuration switch (
SW1
) determines which audio cir-
cuit signals connect to channels A and B of the oscilloscope. The switch is
used only when the board connects to the Educational Laboratory Virtual
Instrumentation Suite (ELVIS) station (see
“ELVIS Interface” on
page 1-9 ). Each channel must have only one signal selected at a time, as
described in Table 2-7 .
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
Table 2-7. Oscilloscope Configuration Switch (SW1)
Channel Switch Position Audio Circuit Signal
A
1 ( OFF
1
)
AMP_LEFT_IN
A 2 ( OFF )
AMP_RIGHT_IN
A 3 ( OFF )
LEFT_OUT
A 4 ( OFF )
RIGHT_OUT
B 5 ( OFF )
AMP_LEFT_IN