Analog Devices ADSP-BF592 EZ-KIT Lite, Руководство пользователя

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Push Buttons and Switches
2-10 ADSP-BF592 EZ-KIT Lite Evaluation System Manual
switch (SW5) disconnects all of the push buttons from their correspond-
ing GPIO pins of the processor and allows the I/O signals to be used on
the expansion interface. Refer to
“Push Button Enable Switch (SW5)” on
page 2-8 for more information.
MIC Gain Switch (SW10)
The microphone gain switch (
SW10
) sets the gain of the MIC signal, which
is connected to the top 3.5 mm jack (
J2
). The gain can be set to 14 dB,
0 dB, or –6 dB by turning
ON
position 1, 2, or 3 of the switch (see
Table 2-6 ). When the corresponding position for the desired gain is
ON
,
the remaining positions should be
OFF
. Refer to “Audio Interface” on
page 1-13 for more information about the audio codec.
WAKE_EN Switch (SW11)
The
WAKE_EN
momentary push button (
SW11
) is provided for an optional
power feature input. The push button is connected to the
WAKE_EN
signal
of the processor. The push button is active high and, when pressed, sends
a high (1) to the processor. The
WAKE_EN
signal can be configured as a ded-
icated
WAKE
input signal from hibernation. Refer to the ADSP-BF59x
Blackfin Processor Programming Reference for more information. The push
button enable switch (
SW5
) disconnects all of the push buttons from their
corresponding GPIO pins of the processor and makes available the I/O
signals to the expansion interface. Refer to
“Push Button Enable Switch
(SW5)” on page 2-8 for more information.
Table 2-6. Table 11. MIC Gain Switch (SW10)
Gain SW10 Switch Settings
5 (14 dB)
ON
,
OFF
,
OFF
,
OFF
1 (0 dB)
OFF
,
ON
,
OFF
,
OFF
0.5 (–6 dB) OFF, OFF, ON, OFF (default)
Unused
OFF
,
OFF
,
OFF
,
OFF