Spartan 3E - Readback via JTAG

Another source of information are the BSDL files. Find them in the ISE directory under spartan3e/data for e.g. the XC3SE.You will find the CFG_IN command the progalgxc3s.cpp uses for programming. The BSDL file also knows about a CFG_OUT command that could probably be used for readback. Compare with the BSDL files for the S2(E) and try out to do similar.

Hope this helps

thanks for your help.

Actually I think I found the commands in the *.rbb-file, which, according to XAPP452, starts with the binary command sets.

So, for reference, here the commands which hopefully work :-)

0xffff ffff // Sync 0xaa99 5566 // Sync 0x3001 c001 // IDCODE Register 0x01c2 2093 // XC3S500E 0x3000 2001 // FAR Write Packet Header 0x0000 0000 // FAR Write Packet Data (0h) 0x3000 8001 // CMD Write Packet Header 0x0000 000b // CMD Write Packet Data (SHUTDOWN) 0x3000 8001 // CMD Write Packet Header 0x0000 0007 // CMD Write Packet Date (RCRC) 0x2000 0000 // NOP 0x2000 0000 // NOP 0x2000 0000 // NOP 0x2000 0000 // NOP 0x3000 8001 // CMD Write Packet Header 0x0000 0004 // CMD Write Packet Data (RCFG) 0x2800 6000 // FDRO Read Packet Header (Type 1) 0x4801 149a // FDRO Read Packet Header (Type 2), Word-Counter 1149Ah ... ... ... 0x3000 8001 // CMD Write Packet Header 0x0000 0005 // CMD Write Packet Data (START) 0x3000 8001 // CMD Write Packet Header 0x0000 0007 // CMD Write Packet Data (RCRC) 0x3000 8001 // CMD Write Packet Header 0x0000 000d // CMD Write Packet Data (DESYNCH) 0x2000 0000 // NOP 0x2000 0000 // NOP 0x2000 0000 // NOP 0x2000 0000 // NOP

Greetings Benni

Please keep us informed and eventually send patches to sourceforge.

Thanks