Jtag Configuration Port; Onboard Power Supplies - Xilinx ML505 User Manual

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24. JTAG Configuration Port

25. Onboard Power Supplies

ML505/ML506/ML507 Evaluation Platform
UG347 (v3.1.1) October 7, 2009
Downloaded from Elcodis.com electronic components distributor
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
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
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
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.
www.xilinx.com
section for more information.
section for more information.
shows the power supply architecture and maximum
Detailed Description
33