User Manual For Cyclone LC Programmers 38
Figure 4-8: External Power Passed Through the Cyclone to the Debug Cable
4.2.5 Power provided by the Cyclone and out 2.5 mm barrel port
In a slightly different scenario, the user may wish to have the Cyclone provide power, but power
the target via an external connector on the target. The voltage supplied to the target is determined
by the settings in the SAP image. When generating the SAP image the Cyclone relays must be
selected as well as the correct voltage level for the target.
Figure 4-9: Power Provided by the Cyclone and Out 2.5 mm Barrel Port
4.3 Setup Reminders
The most important step when providing power out to a target is to check the Cyclone's jumper
settings to make sure they match the intended power setup. The jumpers control the power
settings which determine how power is supplied, regardless of the SAP image settings. If the
jumpers are set for power to be provided through the Cyclone, and the target is externally
powered, this is a conflict and may cause damage to the board.
In the case where power is being supplied through the Cyclone and the target is not being
powered on, the user should first check the jumper settings to make sure they match the
intended power setup. Second, the user should check to make sure the SAP image has the ‘Use
Cyclone Relays’ box checked with the appropriate voltage level selected.
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