Sundance SMT362 - Manual (Page 9)

4.2.5 DSP Boot
When the module is reset, both DSPs come out of their reset state. DSPA will begin
execution of code stored in the flash memory. DSPB is set to boot from host port, and will
thus wait until is has had its boot code loaded by DSPA. The DSPA boot code (factory
programmed by default) will load the FPGA configuration (again from flash), boot DSPB over
the EMIF to host port interface, perform any necessary initialisation and then enter a
ComPort boot sequence. The ComPort boot involves polling the ComPort status register(s)
and downloading code from the first active port.
DSPB, when booted, will simply enter the ComPort boot sequence after initialising any of its
internal devices.
4.2.6 Host Port Interface (HPI)
The HPI of DSPA is not connected, and DSPB’s is connected to the EMIF of DSPA.
User Manual SMT362 Page 9 of 30 Last Edited: 29/04/2009 08:56