Re: [beagleboard] 4 GByte RAM?

2018-05-17 Thread Yiling Cao 
It is a Micron 256M * 16bit DDR3 chip

On Thu, May 17, 2018 at 8:06 PM, Gerald Coley 
wrote:

> That is correct.
>
> Gerald
>
>
> -Original Message-
> From: 'Roger Quadros' via BeagleBoard [mailto:beagleboard@googlegroups.com]
>
> Sent: Thursday, May 17, 2018 7:05 AM
> To: beagleboard@googlegroups.com; Mike Maikaefer  >
> Subject: Re: [beagleboard] 4 GByte RAM?
>
> It probably is 4Gb (Gigabit) which means 512MB.
>
> --
> cheers,
> -roger
>
> Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
> Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
>
> On 17/05/18 13:19, Mike Maikaefer wrote:
> > No, when you check out the BOM or the schematic, you will find 4GB DDR3
> RAM (which is not the eMMC).
> >
> > On Thu, May 17, 2018 at 10:47 AM, Rick Mann  <mailto:rm...@latencyzero.com>> wrote:
> >
> > That's eMMC flash, not RAM. It's accessed like a disk.
> >
> > > On May 16, 2018, at 22:44 , mike.maikae...@gmail.com  mike.maikae...@gmail.com> wrote:
> > >
> > > Hi,
> > >
> > > according to the schematics there is a RAM-module with 4 GByte
> available on the BBB (and also on the BBG). Why are there only 512 MBytes
> available for the CPU - aren't enough address lines used? Or what else is
> the reason?
> > >
> > > Kind regards
> > >
> > > Mike
> > >
> > >
> > >
> > > --
> > > For more options, visit http://beagleboard.org/discuss
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> >
> >
> > --
> > Rick Mann
> > rm...@latencyzero.com <mailto:rm...@latencyzero.com>
> >
> >
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RE: [beagleboard] 4 GByte RAM?

2018-05-17 Thread Gerald Coley 
That is correct. 

Gerald


-Original Message-
From: 'Roger Quadros' via BeagleBoard [mailto:beagleboard@googlegroups.com] 
Sent: Thursday, May 17, 2018 7:05 AM
To: beagleboard@googlegroups.com; Mike Maikaefer 
Subject: Re: [beagleboard] 4 GByte RAM?

It probably is 4Gb (Gigabit) which means 512MB.

-- 
cheers,
-roger

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

On 17/05/18 13:19, Mike Maikaefer wrote:
> No, when you check out the BOM or the schematic, you will find 4GB DDR3 RAM 
> (which is not the eMMC).
> 
> On Thu, May 17, 2018 at 10:47 AM, Rick Mann  <mailto:rm...@latencyzero.com>> wrote:
> 
> That's eMMC flash, not RAM. It's accessed like a disk.
> 
> > On May 16, 2018, at 22:44 , mike.maikae...@gmail.com 
> <mailto:mike.maikae...@gmail.com> wrote:
> > 
> > Hi,
> > 
> > according to the schematics there is a RAM-module with 4 GByte 
> available on the BBB (and also on the BBG). Why are there only 512 MBytes 
> available for the CPU - aren't enough address lines used? Or what else is the 
> reason?
> > 
> > Kind regards
> > 
> > Mike
> > 
> > 
> > 
> > -- 
> > For more options, visit http://beagleboard.org/discuss
> > --- 
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>  
> <https://groups.google.com/d/msgid/beagleboard/ebee7080-b740-42a2-a3ae-a23416241487%40googlegroups.com>.
> > For more options, visit https://groups.google.com/d/optout 
> <https://groups.google.com/d/optout>.
> 
> 
> -- 
> Rick Mann
> rm...@latencyzero.com <mailto:rm...@latencyzero.com>
> 
> 
> -- 
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Re: [beagleboard] 4 GByte RAM?

2018-05-17 Thread 'Roger Quadros' via BeagleBoard 
It probably is 4Gb (Gigabit) which means 512MB.

-- 
cheers,
-roger

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

On 17/05/18 13:19, Mike Maikaefer wrote:
> No, when you check out the BOM or the schematic, you will find 4GB DDR3 RAM 
> (which is not the eMMC).
> 
> On Thu, May 17, 2018 at 10:47 AM, Rick Mann  > wrote:
> 
> That's eMMC flash, not RAM. It's accessed like a disk.
> 
> > On May 16, 2018, at 22:44 , mike.maikae...@gmail.com 
>  wrote:
> > 
> > Hi,
> > 
> > according to the schematics there is a RAM-module with 4 GByte 
> available on the BBB (and also on the BBG). Why are there only 512 MBytes 
> available for the CPU - aren't enough address lines used? Or what else is the 
> reason?
> > 
> > Kind regards
> > 
> > Mike
> > 
> > 
> > 
> > -- 
> > For more options, visit http://beagleboard.org/discuss
> > --- 
> > You received this message because you are subscribed to the Google 
> Groups "BeagleBoard" group.
> > To unsubscribe from this group and stop receiving emails from it, send 
> an email to beagleboard+unsubscr...@googlegroups.com 
> .
> > To view this discussion on the web visit 
> https://groups.google.com/d/msgid/beagleboard/ebee7080-b740-42a2-a3ae-a23416241487%40googlegroups.com
>  
> .
> > For more options, visit https://groups.google.com/d/optout 
> .
> 
> 
> -- 
> Rick Mann
> rm...@latencyzero.com 
> 
> 
> -- 
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> 
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RE: [beagleboard] 4 GByte RAM?

2018-05-17 Thread Gerald Coley 
The maximum memory that is supported by the processor is 1GB. There are not 
enough address lines on the processor to support more than that.

4GB is the eMMC.

Gerald


From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] On 
Behalf Of Mike Maikaefer
Sent: Thursday, May 17, 2018 5:19 AM
To: beagleboard@googlegroups.com
Subject: Re: [beagleboard] 4 GByte RAM?

No, when you check out the BOM or the schematic, you will find 4GB DDR3 RAM 
(which is not the eMMC).

On Thu, May 17, 2018 at 10:47 AM, Rick Mann 
mailto:rm...@latencyzero.com>> wrote:
That's eMMC flash, not RAM. It's accessed like a disk.

> On May 16, 2018, at 22:44 , 
> mike.maikae...@gmail.com<mailto:mike.maikae...@gmail.com> wrote:
>
> Hi,
>
> according to the schematics there is a RAM-module with 4 GByte available on 
> the BBB (and also on the BBG). Why are there only 512 MBytes available for 
> the CPU - aren't enough address lines used? Or what else is the reason?
>
> Kind regards
>
> Mike
>
>
>
> --
> For more options, visit http://beagleboard.org/discuss
> ---
> You received this message because you are subscribed to the Google Groups 
> "BeagleBoard" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
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> For more options, visit https://groups.google.com/d/optout.


--
Rick Mann
rm...@latencyzero.com<mailto:rm...@latencyzero.com>


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Re: [beagleboard] 4 GByte RAM?

2018-05-17 Thread Mike Maikaefer 
No, when you check out the BOM or the schematic, you will find 4GB DDR3 RAM
(which is not the eMMC).

On Thu, May 17, 2018 at 10:47 AM, Rick Mann  wrote:

> That's eMMC flash, not RAM. It's accessed like a disk.
>
> > On May 16, 2018, at 22:44 , mike.maikae...@gmail.com wrote:
> >
> > Hi,
> >
> > according to the schematics there is a RAM-module with 4 GByte available
> on the BBB (and also on the BBG). Why are there only 512 MBytes available
> for the CPU - aren't enough address lines used? Or what else is the reason?
> >
> > Kind regards
> >
> > Mike
> >
> >
> >
> > --
> > For more options, visit http://beagleboard.org/discuss
> > ---
> > You received this message because you are subscribed to the Google
> Groups "BeagleBoard" group.
> > To unsubscribe from this group and stop receiving emails from it, send
> an email to beagleboard+unsubscr...@googlegroups.com.
> > To view this discussion on the web visit https://groups.google.com/d/
> msgid/beagleboard/ebee7080-b740-42a2-a3ae-a23416241487%40googlegroups.com.
> > For more options, visit https://groups.google.com/d/optout.
>
>
> --
> Rick Mann
> rm...@latencyzero.com
>
>
> --
> For more options, visit http://beagleboard.org/discuss
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Re: [beagleboard] 4 GByte RAM?

2018-05-17 Thread Rick Mann 
That's eMMC flash, not RAM. It's accessed like a disk.

> On May 16, 2018, at 22:44 , mike.maikae...@gmail.com wrote:
> 
> Hi,
> 
> according to the schematics there is a RAM-module with 4 GByte available on 
> the BBB (and also on the BBG). Why are there only 512 MBytes available for 
> the CPU - aren't enough address lines used? Or what else is the reason?
> 
> Kind regards
> 
> Mike
> 
> 
> 
> -- 
> For more options, visit http://beagleboard.org/discuss
> --- 
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-- 
Rick Mann
rm...@latencyzero.com


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