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To determine the FPGA device, you just read the code on the package under the "Xilinx Spartan" label.
To determine the power supply source, please see paragraph 5.2 Power Supply Sources.
To determine the VcccIO0 voltage, please see paragraph 5.3 On-Board Power Rails.
To determine PCB revision and assembly variant from FPGA, TE0320 have dedicated user signals, which can be read by user core.
Board revision coded in 4 bits REV[3:0]

To define low (zero) level REV pin connected to ground rail, to define high (one) level REV pin left float (open). These pins should be configured with "pullup" option in user design.
See the table below for current list of board revisions.

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