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5.4.2
Shutdown of Max3238
The Max3238 device can be shut down using the switch
SW200
:
Position 5
: shut down inactive,
Position 6
: shut down active.
When the shut down is active, the MAX3238 device transmitters and receivers are disabled and their
outputs go high impedance.
The shutdown is used for measuring the serial link consumption and for testing the RS232 cable.
5.5 Audio
functions
When
Auxiliary
Audio interface
is used on the mother board, the following jumpers must be
connected between pin 2 an pin 3:
JP500 and JP501: auxiliary speaker,
JP502 and JP503: auxiliary microphone.
When
Main
Audio interface
is used on the mother board, the following jumpers must be connected
between pin 2 and pin 3:
JP504 and JP505: main speaker,
JP506 and JP507: main microphone.
1 2 3
JP500 to JP507
5.6 ON/~OFF and BOOT function
Mode BOOT
(SW202)
ON/~OFF
(SW201)
Normal OFF
ON
Download ON
ON
Note
: internal boot is started when both switches
SW202
(
BOOT
) and
SW201
(
ON/~OFF
) are
ON
during the reset of the module (
SW203
).
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