ML505/ML506/ML507 Evaluation Platform www.xilinx.com 33
UG347 (v3.1.1) October 7, 2009
Detailed Description
R
The Platform Flash PROM can program the FPGA by using the master or slave
configuration in serial or parallel (SelectMap) modes. The Platform Flash PROM is
programmed using Xilinx iMPACT software through the board’s JTAG chain. See the
“Configuration Options,” page 53 section for more information.
24. JTAG Configuration Port
The JTAG configuration port for the board (J1) allows for device programming and FPGA
debug. The JTAG port supports the Xilinx Parallel Cable III, Parallel Cable IV, or Platform
USB cable products. Third-party configuration products might also be available. The JTAG
chain can also be extended to an expansion board by setting jumper J21 accordingly. See
the “Configuration Options,” page 53 section for more information.
25. Onboard Power Supplies
Power supply circuitry on the board generates 0.9V, 1.0V, 1.8V, 2.5V, and 3.3V voltages to
power the components on the board. The 1.0V, 1.8V, and 3.3V supplies are driven by Texas
Instruments PTH08T2 switching power regulators. These regulators are driven with a
400 kHz clock so they run synchronous to each other, reducing noise caused by beat
frequencies. The clocks sent to each regulator are also out of phase to reduce reflected noise
at the input. In addition, the board utilizes the regulators’ turbo trans feature to improve
output transient response.
The diagram in Figure 1-5, page 34 shows the power supply architecture and maximum
current handling on each supply. The typical operating currents are significantly below the
maximum capable. The board is normally shipped with a 15W power supply, which
should be sufficient for most applications.
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