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The module can be powered by B2B connector J5 or the USB connector. If both power supplies are available, the B2B connector power supply takes precedence, disabling the USB power supply automatically.

On Board Power Rails

Three onOn-board voltage regulators provide the following power supply rails needed by the components on the module:

  • 1.2V, 4.0 A max (3.0 A max REV00)
  • 2.5V, 0.8 A max
  • 3.3V, 3.0 A max (1.5 A max REV01)
  • 1.5V, 3.0 A max (1.0 A 5 A max REV01)

The figure below show power supply diagram.

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Scroll pdf title
titleFPGA banks VCCIO power supply


Bank

Supply
Voltage

B0

VCCIO0

B1

1.5V

B2

3.3V

B3

3.3V


VCCIO0 voltage can be configured in 3 ways:

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Warning
Others options of VCCIO0 power supply are not supported and can damage the FPGA!


Scroll pdf title
titleExample of VCCIO0 assembly not dependent on 2.5V power rail. The other way is also possible.
Image Added

See  See the figure below to locate R102 and R103 on PCB.

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Note that some of Spartan-6 I/O types are partially compatible, so pins of compatible types can be used as inputs for signal of other type. See "Spartan-6 FPGA SelectIO Resources" page 38 for detailed information.

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