MicroBlaze and Multimedia Development Board User Guide

The MicroBlaze and Multimedia Development Board is designed to be a compact platform for developing multimedia applications. The board supports PAL and NTSC television input and output, true color SVGA output, an audio CODEC with power amplifier, and Ethernet and RS-232 interfaces. Several push buttons and DIP switches are available for user interaction with the system. The embedded SystemACE™ controller allows for high-speed FPGA configuration from CompactFlash™ storage devices.

Power Supplies

The main power for the board is obtained from an external 5V regulated power supply, which is equipped with an IEC AC input connector for use worldwide with a locally obtained AC line cord.
Local-switch-mode power supplies generate the board’s two main power rails. These power supplies are capable of providing 6 A continuous load current at 3.3 V for ZBT memories and FPGA VCCO and at 1.5 V for the FPGA VCCINT. If an over-current condition exists, the power supplies automatically shut down. The SystemACE controller FPGA is powered separately by a low-dropout linear regulator, deriving 3.3 V from the external 5 V supply. Isolation of the SystemACE controller FPGA power leaves the full 6 A from the switch-mode power supply available to the user application.

Power for the analog circuitry is created by filtering the main 5 V supply, and the –5 V rail is obtained from an isolated output surface-mounted DC-DC converter.

LEDs are used to indicate the status of the primary power supplies. The LED is illuminated if the voltage output is within ± 10% of the required voltage, the LED is illuminated.