W. H. Heydt
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Joined: Fri Mar 09, 2012 7:36 pm
Location: Vallejo, CA (US)

Re: CM3 Release Date

Fri Oct 14, 2016 4:15 am

jamesh wrote:
PeterO wrote:I read that NEC are using a custom spin of the CM from element14, so it may not actually be the same as a CM3 that eventually becomes available to everyone.
PeterO
I don't know, but they could be using a CM3Lite, and have the eMMC on the carrier.
Having watched the NEC announcement video, it is my impression that the CM slot in the monitors can use either a stock CM/CM3 or the custom NEC CM3-16, depending on your needs. This would argue against the eMMC being on the carrier board. Also...while the CM3L exposes the SD interface, I'm not at all sure that the eMMC *could* be on the carrier board and still work.

Now that I think about it, there isn't anything I've seen suggesting that the eMMC interface is exposed off the board, anyway.

mic_s
Posts: 91
Joined: Sun Oct 26, 2014 4:15 pm

Re: CM3 Release Date

Fri Oct 14, 2016 8:08 am

Now that I think about it, there isn't anything I've seen suggesting that the eMMC interface is exposed off the board, anyway.
clk, cmd and data[0] ... data[7] : GPIO34-GPIO43 (Alt3) , SODIMM pin 52 ... pin 78

.

gregeric
Posts: 1509
Joined: Mon Nov 28, 2011 10:08 am

Re: CM3 Release Date

Fri Oct 14, 2016 8:31 am

The Pi's primary SD/eMMC interface is 4-bits wide at GPIO48-53. That's the one broken out on even numbered pins 2-24.

CM3(L) & revised IO board schematics now at https://www.raspberrypi.org/documentati ... ematics.md

Vbat now straight to 5V re core power - a simple mod to do on the old CMIO board if required.
2016-10-14_09-36-52_344.jpg
Remove R1 & run a wire from the pad nearest the CM socket to one of the caps as shown.
2016-10-14_09-36-52_344.jpg (62.37 KiB) Viewed 2301 times

W. H. Heydt
Posts: 10371
Joined: Fri Mar 09, 2012 7:36 pm
Location: Vallejo, CA (US)

Re: CM3 Release Date

Fri Oct 14, 2016 1:39 pm

Blog post today (14 Oct.) is about the NEC announcement and says (in part) that the CM3 will be released "near the end of the year". As I read it, it also says that that the CM1, CM3, and CM3-16 will all work in the NEC displays.

JamesPi123
Posts: 110
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Location: Inside my Pi
Contact: Website

Re: CM3 Release Date

Thu Apr 13, 2017 8:45 pm

where?

fruitoftheloom
Posts: 19845
Joined: Tue Mar 25, 2014 12:40 pm
Location: Delightful Dorset

Re: CM3 Release Date

Thu Apr 13, 2017 8:52 pm

adieu

My other Computer is an Asus CS10 ChromeBit running Chrome Operating System.
HP Envy 4500 Wireless Printer supported by HPLIP software in Raspbian Buster.
Raspberry Pi Model 2B v1.1

W. H. Heydt
Posts: 10371
Joined: Fri Mar 09, 2012 7:36 pm
Location: Vallejo, CA (US)

Re: CM3 Release Date

Fri Apr 14, 2017 1:02 am

W. H. Heydt wrote:
hippy wrote:
W. H. Heydt wrote:What intrigues me about the NEC announcement is the NEC "special" CM3 with 16GB of eMMC (aka CM3-16). The two interesting items (for me) in the datasheet are that the CM3 will still have 4GB eMMC (I was hoping for more) and the CM3L, without any eMMC.
If the CM3 and CM3L use the same PCB, if it's just that an eMMC isn't fitted to the CM3L but the tracking is there, it would seem to be trivial to fit any sized eMMC memory.
Well...BGA soldering isn't in my skill set, but other than that, one would think that was possible.
There is one other--rather critical--difference. The CM3L routes signals to use an external SD card or eMMC, while the CM3 does not. Therefore, one would have to either remove the eMMC from a CM3 and replace it or put the eMMC on the carrier board for a CM3L.


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