Analog Devices Lite ADSP-BF527 EZ-KIT, Manual

Page: 66 / 117

Push Button and Switch Settings
2-14 ADSP-BF527 EZ-KIT Lite Evaluation System Manual
Mic/HP LPBK Audio Mode Switch (SW8)
The
SW8
switch allows the EZ-KIT Lite to be placed in loopback mode to
test for signal/circuit continuity and functionality (see “Power-On-Self
Test” on page 1-25 ).
SW8
positions 1 and 2 connect the
MICIN
signal to the
headphone left and right outputs for audio loopback. Do not turn
SW8
positions 1 and 2
ON
at the same time.
SW8
positions 3 and 4 select the control interface for the audio codec.
SW8
position 3
ON
and 4
OFF
select SPI interface, while position 3
OFF
and
position 4
ON
select TWI mode. The
SW8
default settings are
OFF
,
OFF
,
ON
,
OFF
. See “SPI/TWI Switch (SW19)” on page 2-19 for more information.
Table 2-9. Flash Enable Switch (SW7)
SW7 Switch Position (Default) Processor Signal
1 (
ON
)
~AMS0
2 (
ON
)
~AMS1
3 (
ON
)
~AMS2
4 (
ON
)
~AMS3
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