BlackFin BF531 and MT48LC4M16
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From: Jookie on 2 Apr 2010 06:26 Hello, this is a question to guys with some experience with AD BlackFin BF531 (or BF533) - normally I would ask on blackfin.org, but it was shut down some time ago... Anyway... I've connected MT46LC4M16 (1 Meg x 16 x 4 banks) SDRAM to my BF531, I've initialized it (although I'm not sure about those settings), but I got some issues with it. According to datasheet of BF531 the smallest possible 'bank size' should be 16 MB, my MT48LC4M16 is only 8 MB... So my questions is: has anybody successfully used BF531 (or BF533) with this SDRAM? Best regards, Jookie --------------------------------------- Posted through http://www.EmbeddedRelated.com
From: Vladimir Vassilevsky on 2 Apr 2010 09:54 Jookie wrote: > Hello, > > this is a question to guys with some experience with AD BlackFin BF531 (or > BF533) - normally I would ask on blackfin.org, but it was shut down some > time ago... > > Anyway... I've connected MT46LC4M16 (1 Meg x 16 x 4 banks) SDRAM to my > BF531, I've initialized it (although I'm not sure about those settings), > but I got some issues with it. According to datasheet of BF531 the smallest > possible 'bank size' should be 16 MB, my MT48LC4M16 is only 8 MB... So my > questions is: has anybody successfully used BF531 (or BF533) with this > SDRAM? I haven't use BF531 with this particular SDRAM; however 1M x 16 x 4 is standard configuration and there should be no problem. Bank size field in SDRAM controller only controls the allowed address range for access. Vladimir Vassilevsky DSP and Mixed Signal Design Consultant http://www.abvolt.com
From: Jookie on 2 Apr 2010 15:48 Hello Vladimir, thank you for your answer. I'm still not sure if the SDRAM controler inside the BF531 can do it, so I've wrote an e-mail do AD technical support - I will see if I will get an answer and what it will be :) Best regards, Jookie >I haven't use BF531 with this particular SDRAM; however 1M x 16 x 4 is >standard configuration and there should be no problem. Bank size field >in SDRAM controller only controls the allowed address range for access. > >Vladimir Vassilevsky >DSP and Mixed Signal Design Consultant >http://www.abvolt.com > --------------------------------------- Posted through http://www.EmbeddedRelated.com
From: Vladimir Vassilevsky on 2 Apr 2010 16:05 The answer is: RTFM Namely EN-210 VLV Jookie wrote: > Hello Vladimir, > > thank you for your answer. I'm still not sure if the SDRAM controler inside > the BF531 can do it, so I've wrote an e-mail do AD technical support - I > will see if I will get an answer and what it will be :) > > Best regards, > Jookie > > > >>I haven't use BF531 with this particular SDRAM; however 1M x 16 x 4 is >>standard configuration and there should be no problem. Bank size field >>in SDRAM controller only controls the allowed address range for access. >> >>Vladimir Vassilevsky >>DSP and Mixed Signal Design Consultant >>http://www.abvolt.com >> > > > --------------------------------------- > Posted through http://www.EmbeddedRelated.com
From: Al Clark on 2 Apr 2010 18:59
Vladimir Vassilevsky <nospam(a)nowhere.com> wrote in news:l7ednQaiHK9LayjWnZ2dnUVZ_sydnZ2d(a)giganews.com: > > > Jookie wrote: > >> Hello, >> >> this is a question to guys with some experience with AD BlackFin BF531 >> (or BF533) - normally I would ask on blackfin.org, but it was shut down >> some time ago... Blackfin.org is quiet but there is very active support for Blackfin on the ADI site. http://ez.analog.com/community/blackfin-processors?view=discussions&start=0 Al Clark www.danvillesignal.com |