Sundance SMT381 2004 - Manual (Page 40)

4.2 Configuring the FPGA
The default for the FPGA configuration mode is using ComPort3. Configuring the
FPGA from ComPort 3 makes it possible not to have to use a JTAG cable. Having a
direct ComPort link enhances debugging and testing and therefore reduces the
products time to market.
The configuration data can be downloaded into a DSP TIM module external memory
(SMT6001) along with the DSP application, or configuration data can be sent from a
PC application using a Sundance carrier with a DSP host (SMT6500).
The bitstream is presented on ComPort 3 and the microcontroller embedded on the
SMT381-VP provides the mechanism to deliver it to the Virtex-II Pro device
(configuration takes about 35 seconds and the process is similar to the configuration
of the SMT398. For more into refer to the SMT398 User Manual).
After configuration the ComPort is available to the FPGA for data transfers.
4.3 Setting up the FPGA
•
Configure the FPGA over ComPort 3 like described above
•
Initialize the SMT381-VP registers with the required values. See Control
Register Settings section underneath for the description of these registers
•
Store data in the memory on the SMT381-VP by writing it over the SHB bus.
•
The SMT381-VP is waiting for a trigger to start transferring data to the DAC.
This command can come either from the external trigger connectors, or from
ComPort 3 (see transfer trigger register section for more information).
•
Once it receives a trigger command, the SMT381-VP will read data from the
memory and pass it on to the DAC.