Amin- > I'm new in this group.I work on TMS320vc549 for my final project. > I have (CCS v.2) and i don't know how convert *.obj files to *.hex > files. > And If i want to use HPI for first boot, what i must to do? > I design a board with c549 and i want send data to TMS320vc549'DARAM > With MC-8051.I want know if i use this method to boot my DSP, it's > important to use Level shifter for convert 5v-TTL(8051) to 3.3v(I/O > DSP).and if i dont use level shifter for this it's possible to > damage my DSP chip. A level shifting bus switch will work. With 8051, you should be able to treat HPI as SRAM and get it to work. You can tie /HDS1 and /HAS high, use an 8051 strobe connected to /HCS and a high address line (inverted) connected /HDS2, and use /MEMW as HR/W. The one thing to be careful of would be monitoring HRDY to make sure HPI is ready for additional transactions. It is possible to make consecutive HPI transactions too fast, although with 8051 that's not very likely :-) -Jeff |