Hi, I'm looking for some information on the proprietary ISP interface used by Lattice (specifically in the ispGDS22 device) I've managed to find a Lattice document describing the function of the SDI,SDO,MODE + SCLK pins and the devices internal state machine, but nothing on specifically how to get the fuse map /JEDEC file into the device 'in-situ'. I've searched the Lattice website, but they don't seem to give out this information readily. Can anyone direct me to a suitable resource? Many thanks David
ISP interface
Started by ●December 12, 2006
Reply by ●December 12, 20062006-12-12
David schrieb:> Hi, > > I'm looking for some information on the proprietary ISP interface used > by Lattice (specifically in the ispGDS22 device) > > I've managed to find a Lattice document describing the function of the > SDI,SDO,MODE + SCLK pins and the devices internal state machine, but > nothing on specifically how to get the fuse map /JEDEC file into the > device 'in-situ'. I've searched the Lattice website, but they don't > seem to give out this information readily. > > Can anyone direct me to a suitable resource? > > Many thanks > > Davidlattice ISP sw source code used to be available but I think it no longer is :(
Reply by ●December 12, 20062006-12-12
Antti wrote:> David schrieb: > >> Hi, >> >> I'm looking for some information on the proprietary ISP interface used >> by Lattice (specifically in the ispGDS22 device) >> >> I've managed to find a Lattice document describing the function of the >> SDI,SDO,MODE + SCLK pins and the devices internal state machine, but >> nothing on specifically how to get the fuse map /JEDEC file into the >> device 'in-situ'. I've searched the Lattice website, but they don't >> seem to give out this information readily. >> >> Can anyone direct me to a suitable resource? >> >> Many thanks >> >> David > > lattice ISP sw source code used to be available > but I think it no longer is :( >Hmmm... that may make me think twice about using Lattice devices; ISP is a key requirement. Cheers PeteS
Reply by ●December 12, 20062006-12-12
PeteS schrieb:> Antti wrote: > > David schrieb: > > > >> Hi, > >> > >> I'm looking for some information on the proprietary ISP interface used > >> by Lattice (specifically in the ispGDS22 device) > >> > >> I've managed to find a Lattice document describing the function of the > >> SDI,SDO,MODE + SCLK pins and the devices internal state machine, but > >> nothing on specifically how to get the fuse map /JEDEC file into the > >> device 'in-situ'. I've searched the Lattice website, but they don't > >> seem to give out this information readily. > >> > >> Can anyone direct me to a suitable resource? > >> > >> Many thanks > >> > >> David > > > > lattice ISP sw source code used to be available > > but I think it no longer is :( > > > > Hmmm... that may make me think twice about using Lattice devices; ISP is > a key requirement. > > Cheers > > PeteSthere should be no problems with recent devices, I was referring to ISP source code for devices like ispGAL, etc.. I had it once, but I think this was still the "floppy disk era" so not sure if I still have to code for new devices the embedded programming is obtainable Antti
Reply by ●December 12, 20062006-12-12
Antti wrote:> PeteS schrieb: > >> Antti wrote: >>> David schrieb: >>> >>>> Hi, >>>> >>>> I'm looking for some information on the proprietary ISP interface used >>>> by Lattice (specifically in the ispGDS22 device) >>>> >>>> I've managed to find a Lattice document describing the function of the >>>> SDI,SDO,MODE + SCLK pins and the devices internal state machine, but >>>> nothing on specifically how to get the fuse map /JEDEC file into the >>>> device 'in-situ'. I've searched the Lattice website, but they don't >>>> seem to give out this information readily. >>>> >>>> Can anyone direct me to a suitable resource? >>>> >>>> Many thanks >>>> >>>> David >>> lattice ISP sw source code used to be available >>> but I think it no longer is :( >>> >> Hmmm... that may make me think twice about using Lattice devices; ISP is >> a key requirement. >> >> Cheers >> >> PeteS > > there should be no problems with recent devices, > I was referring to ISP source code for devices like ispGAL, etc.. > I had it once, but I think this was still the "floppy disk era" so > not sure if I still have to code > > for new devices the embedded programming is obtainable > > Antti >Thanks for that clarification, Antti :) Cheers PeteS