On Fri, 8 Apr 2005, Chandrakant Deoda wrote: > > > Hello, > For software development perpose I want to connect external PM and DM, so > can u tell me how can I connect any external memory. i.e how can i modify > the .ldf file. > I have study the Hard Overlay and soft Overlay, but as i call the Hard > Overlay my whole internal DM is modified with external memory , that think > I dont want. > and about soft Overlay i have not try because it giving the error. > Please tell me which is good, or we have any other option. > > Regards > Chandrakant Deoda If you want a lot of external ram or rom, you will have to use a latch so you can fix the higher address lines, then read out small banks which the processor can directly access. A soft overlay should work fine. You may have to compile each program you want to load separatly, then burn them into different sectors of your flash rom rather than do it all in one huge chunk. From a design perspective, it makes more sense to use a processor that can handle the large amounts of ram directly rather than retrofit a small one. Patience, persistence, truth, Dr. mike

Hello, For software development perpose I want to connect external PM and DM, so can u tell me how can I connect any external memory. i.e how can i modify the .ldf file. I have study the Hard Overlay and soft Overlay, but as i call the Hard Overlay my whole internal DM is modified with external memory , that think I dont want. and about soft Overlay i have not try because it giving the error. Please tell me which is good, or we have any other option. Regards Chandrakant Deoda ----- Original Message ----- From: Al Clark <aclark@acla...> To: <adsp@adsp...> Sent: Thursday, April 07, 2005 8:43 PM Subject: Re: [ADSP] LDF file problem > I caught this out of context.... > None of the 21xx family has an SDRAM controller. We have a new SHARC based > kit available from Arrow for $199 that includes a 64Mb SDRAM. The SDRAM > controller is implemented in a companion Altera FPGA . > Details are at our web site: > www.danvillesignal.com > Al Clark > > At 08:53 AM 4/7/2005, Steve Holle wrote: > >I don't think a 2189 has an integral SDRAM controller and I'm pretty sure > >it can't handle that amount fo memory. Wouldn't it be easier to move up to > >something like the 21065L? > >At 12:13 AM 4/7/2005, Chandrakant Deoda wrote: > > >Hello > > >I am working with ADSP 2189 and facing the following problem > > >I have defult ldf file for 2189 with 32k PM and 48k DM, now I want to > > >connect the 8MB SDRAM and 2 MB Flash RAM > > >how can i connect ..? i.e. how can i modify the ldf file so i can connect > > >external memory. > > >Regards > > >Chandrakant

At 10:42 AM 4/7/2005, you wrote: >How come you use an FPGA? Don't most of the SHARCs have an SDRAM controller? The third generation SHARC ADSP-2126x and ADSP-21364 do not have SDRAM controllers. They are much faster than earlier SHARCs and they have much better peripheral support. I like them much better than the 21065L and 21161, but there are a few tradeoffs. The FPGA adds the SDRAM controller and other I/O expansion. You can also use the FPGA for your own purposes since only about 15% of the FPGA resources are used. Al Clark >At 09:13 AM 4/7/2005, Al Clark wrote: > >>I caught this out of context.... >> >>None of the 21xx family has an SDRAM controller. We have a new SHARC based >>kit available from Arrow for $199 that includes a 64Mb SDRAM. The SDRAM >>controller is implemented in a companion Altera FPGA . >> >>Details are at our web site: >> >>www.danvillesignal.com >> >>Al Clark >> >> >> >> >> >>At 08:53 AM 4/7/2005, Steve Holle wrote: >> >> >I don't think a 2189 has an integral SDRAM controller and I'm pretty sure >> >it can't handle that amount fo memory. Wouldn't it be easier to move up to >> >something like the 21065L? >> >At 12:13 AM 4/7/2005, Chandrakant Deoda wrote: >> > >> > >> > >Hello >> > >I am working with ADSP 2189 and facing the following problem >> > >I have defult ldf file for 2189 with 32k PM and 48k DM, now I want to >> > >connect the 8MB SDRAM and 2 MB Flash RAM >> > >how can i connect ..? i.e. how can i modify the ldf file so i can connect >> > >external memory. >> > > >> > >Regards >> > >Chandrakant >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > >> >Steve Holle >> >Link Communications, Inc. >> >1035 Cerise Rd. >> >Billings, MT 59101 >> >sholle@shol... >> > >> > >> > >> > >> > >> > >> > >> > >> >> >> >>Al Clark >>Danville Signal Processing, Inc. >>-------------------------------- >>Purveyors of Fine DSP Hardware and other Cool Stuff >>Available at http://www.danvillesignal.com >> >> >> >> >> >> >> > >Steve Holle >Link Communications, Inc. >1035 Cerise Rd. >Billings, MT 59101 >sholle@shol... > Al Clark Danville Signal Processing, Inc. -------------------------------- Purveyors of Fine DSP Hardware and other Cool Stuff Available at http://www.danvillesignal.com

How come you use an FPGA? Don't most of the SHARCs have an SDRAM controller? At 09:13 AM 4/7/2005, Al Clark wrote: >I caught this out of context.... > >None of the 21xx family has an SDRAM controller. We have a new SHARC based >kit available from Arrow for $199 that includes a 64Mb SDRAM. The SDRAM >controller is implemented in a companion Altera FPGA . > >Details are at our web site: > >www.danvillesignal.com > >Al Clark >At 08:53 AM 4/7/2005, Steve Holle wrote: > > >I don't think a 2189 has an integral SDRAM controller and I'm pretty sure > >it can't handle that amount fo memory. Wouldn't it be easier to move up to > >something like the 21065L? > >At 12:13 AM 4/7/2005, Chandrakant Deoda wrote: > > > > > > >Hello > > >I am working with ADSP 2189 and facing the following problem > > >I have defult ldf file for 2189 with 32k PM and 48k DM, now I want to > > >connect the 8MB SDRAM and 2 MB Flash RAM > > >how can i connect ..? i.e. how can i modify the ldf file so i can connect > > >external memory. > > > > > >Regards > > >Chandrakant > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >Steve Holle > >Link Communications, Inc. > >1035 Cerise Rd. > >Billings, MT 59101 > >sholle@shol... > > > > > > > > > > > > > > > > >Al Clark >Danville Signal Processing, Inc. >-------------------------------- >Purveyors of Fine DSP Hardware and other Cool Stuff >Available at http://www.danvillesignal.com Steve Holle Link Communications, Inc. 1035 Cerise Rd. Billings, MT 59101 sholle@shol...

I caught this out of context.... None of the 21xx family has an SDRAM controller. We have a new SHARC based kit available from Arrow for $199 that includes a 64Mb SDRAM. The SDRAM controller is implemented in a companion Altera FPGA . Details are at our web site: www.danvillesignal.com Al Clark At 08:53 AM 4/7/2005, Steve Holle wrote: >I don't think a 2189 has an integral SDRAM controller and I'm pretty sure >it can't handle that amount fo memory. Wouldn't it be easier to move up to >something like the 21065L? >At 12:13 AM 4/7/2005, Chandrakant Deoda wrote: > >Hello > >I am working with ADSP 2189 and facing the following problem > >I have defult ldf file for 2189 with 32k PM and 48k DM, now I want to > >connect the 8MB SDRAM and 2 MB Flash RAM > >how can i connect ..? i.e. how can i modify the ldf file so i can connect > >external memory. > > > >Regards > >Chandrakant > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >Steve Holle >Link Communications, Inc. >1035 Cerise Rd. >Billings, MT 59101 >sholle@shol... Al Clark Danville Signal Processing, Inc. -------------------------------- Purveyors of Fine DSP Hardware and other Cool Stuff Available at http://www.danvillesignal.com

I don't think a 2189 has an integral SDRAM controller and I'm pretty sure it can't handle that amount fo memory. Wouldn't it be easier to move up to something like the 21065L? At 12:13 AM 4/7/2005, Chandrakant Deoda wrote: >Hello >I am working with ADSP 2189 and facing the following problem >I have defult ldf file for 2189 with 32k PM and 48k DM, now I want to >connect the 8MB SDRAM and 2 MB Flash RAM >how can i connect ..? i.e. how can i modify the ldf file so i can connect >external memory. > >Regards >Chandrakant Steve Holle Link Communications, Inc. 1035 Cerise Rd. Billings, MT 59101 sholle@shol...