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Apply Power
The emulator can be powered from the target or via an optional external power supply. If your target
operates at 5Volts and can supply the extra emulator current (100ma typical/300ma max) to the memory
socket, then you can use target power. If your target operates at less than 5V or is incapable of supply the
extra emulator current, then you must use an external power supply. External power supplies are available
from TechTools or your local dealer. The external supply must provide a regulated 5VDC at 300ma or
greater.
The emulator status LED operates differently based on whether you are using target power or external
power. If you are powering the emulator with an external power supply, refer to the section “Using
External Power”. Otherwise, refer to the section below, “Using Target Power”.
Using Target Power
Turn on your target power supply. The emulator status LED should glow a STEADY GREEN. If not, refer
to the troubleshooting tips below to correct the problem before continuing.
LED Glows RED or does not turn on:
Immediately turn off target power and correct the
problem before reapplying power!
Your target does not have enough power to operate the emulator, power is not reaching the emulator or
REVERSE voltage is reaching the emulator.
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Verify all target cable connections
Verify the target cable is plugged in correctly (pin 1 orientation)
Verify that any adapters you might be using are the correct pin-outs.
Once you are SURE the emulator is not being subjected to reverse voltage, verify the target
provides at least 4.5V to the memory socket WHILE THE EMULATOR IS PLUGGED IN.
Connect an external power supply to the emulator if necessary.
LED Flashes GREEN:
You have enough power, but you failed to connect the reset line properly. When the emulator is first
powered up, it asserts RESET to keep the target from running until it receives a download. The flashing
GREEN LED indicates target activity.
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Verify the RESET line is connected
Verify your selection of the RESET attachment point
Verify your selection of RESET polarity.
FlexROM III User’s Manual
8
Copyright ? 2001, TechTools
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