Push Button and Switch Settings
2-12
ADSP-BF526 EZ-Board Evaluation System Manual
Flash Enable Switch (SW6)
The flash enable switch (
SW6
) disconnects the
AMSx
signals from parallel
flash memory (
U16
), allowing other devices to utilize the signals via the
expansion interface II. For each switch listed in
OFF
, the size of available flash memory is reduced by 1 MB.
MIC Gain Switch (SW9)
The microphone gain switch (
SW9
) sets the gain of the
MIC
signal, which is
connected to the top 3.5 mm jack (
J4
). The gain can be set to 14 dB,
0 dB, or –6 dB by turning
ON
position 1, 2, or 3 of
SW9
(see
When the corresponding position for the desired gain is
ON
, the remaining
positions must be
OFF
. Refer to
“Audio Interface” on page 1-22
for more
information about the audio codec.
Table 2-6. Flash Enable Switch (SW6)
SW6 Switch Position (Default)
Processor Signal
1 (
ON
)
AMS0
2 (
ON
)
AMS1
3 (
ON
)
AMS2
4 (
ON
)
AMS3
Table 2-7. MIC Gain Switch (SW9)
Gain
SW9 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
