Development Board Leds - Digi Connect ME Hardware Reference Manual

Reset, SW4
Power On/Off Switch, SW5

Development Board LEDs

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The Reset switch is a push button switch labeled SW4 on the development board. Pressing
the switch holds the Digi Connect ME embedded module in reset. When the push button is
released, the module reboots.
The left position means that power is on. The right position means that power is off.
The development board contains 25 LEDs that are labeled CR1 through CR25. The
following table lists and describes the LEDs.
Development Board LED Descriptions
Board
Description
Label
TXD, Secondary Serial Port
CR1
Yellow
TXD, Secondary Serial Port
CR2
Green
RXD, Secondary Serial Port
CR 3
Yellow
RXD, Secondary Serial Port
CR4
Green
DCD, Primary Serial Port
CR5
Yellow
DCD, Primary Serial Port
CR6
Green
DSR, Primary Serial Port
CR7
Yellow
DSR, Primary Serial Port
CR8
Green
CTS, Primary Serial Port
CR9
Yellow
CTS, Primary Serial Port
CR10
Green
Indication
State
Logic 1 on TTL, mark,-V on line
On
side
Logic 0 on TTL, space, +V on
On
line side
On
Logic 0 on TTL, space, +V on
line side
Logic 0 on TTL
On
On Logic 0 on line side
On Logic 1 on line side
On Logic 0 on line side
On Logic 1 on line side
On Logic 0 on line side
On Logic 1 on line side
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