> I am convinced.  I've been looking into the availability of the
> AT91SAM7X, and Atmel claims the distributors will have them Oct 1.
> I've got calls into the distributors to see if that's for real.  Only
> Digi-Key has responded so far, and the responses was something along
> the lines of "Huh?  Ain't never heard of it."  We'll see if anybody
> else comes through.
>

There are distributors with samples right now...
If you download the evaluation kit manual ,then there are some schematics 
with a Davcom PHY.
You probably want to use RMII to save pins.
If you need industrial temp range, then the Davicom part will not cut it but 
a micrel part cn do
RMII + industrial.


> Thanks,
>
> -- 
> Randall 

> AT91SAM7X seems to be your best choice.  If you are concerned about 7X
> availabilty, goes with 7A or 7S first.  If you are starting your
> project soon, perhaps you can get the 7X when you are ready for it.
> Switching from 7A or 7S to 7X is a lot easier than from AVR to ARM.
>

SAM7X samples has been seen!


-- 
A. P. Richelieu

jpinkham wrote:
> >
> >linnix wrote:
> >> Randall Nortman wrote:
> >> > ...
> >> > Yeah, the prototypes will be hand-soldered by yours truly, so
> leadless
> >> > packages are probably not such a good idea.  How do the pros handle
> >> > prototype assembly of things that can't be hand-soldered?
> >>
> >> We simply order the prototype board with the part mounted.  Dm9161AE
> >> (TQFP 48) is not a problem for the prototype shop.  For productions,
> >> they are $2 to $4 each, depends on qty.
> >
> >I just got a quote from the shop.  They can provide the Dm9161AE
> >(ethernet phy) and mount on the prototype board for $5 additional.  The
> >prototype boards are $5 to $10 each, depending on size.  Mininum order
> >of $50.  See:
> >
> >http://pcb.info-for.us
> >
> >
>
> linnix, Randall,
>
> Were you able to find a US distributer for direct purchase/sample of the
> DM9161?
> 

We are getting some for $3 each.  How many do you need.

>
>linnix wrote:
>> Randall Nortman wrote:
>> > ...
>> > Yeah, the prototypes will be hand-soldered by yours truly, s
leadless
>> > packages are probably not such a good idea.  How do the pros handle
>> > prototype assembly of things that can't be hand-soldered?
>>
>> We simply order the prototype board with the part mounted.  Dm9161AE
>> (TQFP 48) is not a problem for the prototype shop.  For productions,
>> they are $2 to $4 each, depends on qty.
>
>I just got a quote from the shop.  They can provide the Dm9161AE
>(ethernet phy) and mount on the prototype board for $5 additional.  The
>prototype boards are $5 to $10 each, depending on size.  Mininum order
>of $50.  See:  
>
>http://pcb.info-for.us
>
>

linnix, Randall,

Were you able to find a US distributer for direct purchase/sample of th
DM9161?

Jason



		
This message was sent using the comp.arch.embedded web interface o
www.EmbeddedRelated.com

linnix wrote:
> Randall Nortman wrote:
> > ...
> > Yeah, the prototypes will be hand-soldered by yours truly, so leadless
> > packages are probably not such a good idea.  How do the pros handle
> > prototype assembly of things that can't be hand-soldered?
>
> We simply order the prototype board with the part mounted.  Dm9161AE
> (TQFP 48) is not a problem for the prototype shop.  For productions,
> they are $2 to $4 each, depends on qty.

I just got a quote from the shop.  They can provide the Dm9161AE
(ethernet phy) and mount on the prototype board for $5 additional.  The
prototype boards are $5 to $10 each, depending on size.  Mininum order
of $50.  See:  

http://pcb.info-for.us

Randall Nortman wrote:
> ...
> Yeah, the prototypes will be hand-soldered by yours truly, so leadless
> packages are probably not such a good idea.  How do the pros handle
> prototype assembly of things that can't be hand-soldered?

We simply order the prototype board with the part mounted.  Dm9161AE
(TQFP 48) is not a problem for the prototype shop.  For productions,
they are $2 to $4 each, depends on qty.

On 2005-09-09, pbreed@netburner.com <pbreed@netburner.com> wrote:
>>I can probably wait until mid-October to get the part.  But then I
>>have another problem -- I need a cheap Ethernet PHY (no MAC, since the
>>7X has on-chip MAC).  And the problem is that the low-volume suppliers
>>I usually use (Digi-Key and Mouser) have pretty poor selections of
>>PHYs.  (Digi-Key is charging ~$8+ for a simple 10/100 PHY... seems
>>outrageous.)  In fact, most of the parts I've been looking for during
>>this project (which is a bit more complex than things I've undertaken
>>before) are expensive or non-existant in Digi-Key's catalog, so
>>perhaps it's time I branch out to other suppliers -- any suggestions
>>(of suppliers and/or parts)?
>>
>
> How many are you trying to build?
> (Do you just need samples or 100.1000.10000?)

Initial prototype run of 5 units, then a first production run of about
50, and then (if all goes well), subsequent runs of 100-300.  The
larger runs are easy, but how do I get small quantities for
prototyping?

> We have had good luck with the Davicom DM9161
> Probably at least a 100pc minimum buy.

I've seen Davicom mentioned, so I've been looking for anybody who
carries Davicom, with no luck... where can I get them in the US?

> Micrel has some new very low cost PHY chips as well... 
> you could probably get dsitributor samples....
> (We are just starting to use some of these)
>
> Lastly try the DP83847ALQA56A-ND $5.70 Q1 from digikey.
> It is a fine PHY, but be aware that placing the LLP56 package on a
> PCB is a bitch.

Yeah, the prototypes will be hand-soldered by yours truly, so leadless
packages are probably not such a good idea.  How do the pros handle
prototype assembly of things that can't be hand-soldered?  I'm not a
pro, just an amateur hack who got talked into doing this project.  I
guess that makes me a pro now, but I don't feel like one.  In
particular, trying to navigate the sea of manufacturers, parts, and
distributors is getting a little overwhelming.

-- 
Randall

>I can probably wait until mid-October to get the part.  But then I
>have another problem -- I need a cheap Ethernet PHY (no MAC, since the
>7X has on-chip MAC).  And the problem is that the low-volume suppliers
>I usually use (Digi-Key and Mouser) have pretty poor selections of
>PHYs.  (Digi-Key is charging ~$8+ for a simple 10/100 PHY... seems
>outrageous.)  In fact, most of the parts I've been looking for during
>this project (which is a bit more complex than things I've undertaken
>before) are expensive or non-existant in Digi-Key's catalog, so
>perhaps it's time I branch out to other suppliers -- any suggestions
>(of suppliers and/or parts)?
>

How many are you trying to build?
(Do you just need samples or 100.1000.10000?)


We have had good luck with the Davicom DM9161
Probably at least a 100pc minimum buy.

Micrel has some new very low cost PHY chips as well... 
you could probably get dsitributor samples....
(We are just starting to use some of these)

Lastly try the DP83847ALQA56A-ND $5.70 Q1 from digikey.
It is a fine PHY, but  be aware that placing the LLP56 package on a PCB is a bitch.


Paul

On 2005-09-09, linnix <me@linnix.info-for.us> wrote:
>
> pbreed@netburner.com wrote:
>> Why the Mega128???
>> ...

Because it's what I'm familiar with.  Bad reason.

> It doesn't make sense with AVR, if you need ethernet.

Upon further investigation, I have come to agree.

>> Freescale/Coldfire 5270 7.95 (We currently use the 150Mhz version $9.54)
>> ...
>> This gives you a far more capable unit.
>> 100Mhz 32 bit CPU,  512K flash ,2M bytes of SRAM, 3 uarts, CAN, I2C, SPI, 16 timers,
>> 10/100 Ethernet.
>>
>> If you need A/D from the Mega then substitute a freescale 5282 for the CPU and Flash.
>
> AT91SAM7A,7S or 7X are just as good.
>
> AT91SAM7X seems to be your best choice.  If you are concerned about 7X
> availabilty, goes with 7A or 7S first.  If you are starting your
> project soon, perhaps you can get the 7X when you are ready for it.
> Switching from 7A or 7S to 7X is a lot easier than from AVR to ARM.

I am convinced.  I've been looking into the availability of the
AT91SAM7X, and Atmel claims the distributors will have them Oct 1.
I've got calls into the distributors to see if that's for real.  Only
Digi-Key has responded so far, and the responses was something along
the lines of "Huh?  Ain't never heard of it."  We'll see if anybody
else comes through.

I can probably wait until mid-October to get the part.  But then I
have another problem -- I need a cheap Ethernet PHY (no MAC, since the
7X has on-chip MAC).  And the problem is that the low-volume suppliers
I usually use (Digi-Key and Mouser) have pretty poor selections of
PHYs.  (Digi-Key is charging ~$8+ for a simple 10/100 PHY... seems
outrageous.)  In fact, most of the parts I've been looking for during
this project (which is a bit more complex than things I've undertaken
before) are expensive or non-existant in Digi-Key's catalog, so
perhaps it's time I branch out to other suppliers -- any suggestions
(of suppliers and/or parts)?

Thanks,

-- 
Randall

pbreed@netburner.com wrote:
> Why the Mega128???
> ...

It doesn't make sense with AVR, if you need ethernet.

> Freescale/Coldfire 5270 7.95 (We currently use the 150Mhz version $9.54)
> ...
> This gives you a far more capable unit.
> 100Mhz 32 bit CPU,  512K flash ,2M bytes of SRAM, 3 uarts, CAN, I2C, SPI, 16 timers,
> 10/100 Ethernet.
>
> If you need A/D from the Mega then substitute a freescale 5282 for the CPU and Flash.

AT91SAM7A,7S or 7X are just as good.

AT91SAM7X seems to be your best choice.  If you are concerned about 7X
availabilty, goes with 7A or 7S first.  If you are starting your
project soon, perhaps you can get the 7X when you are ready for it.
Switching from 7A or 7S to 7X is a lot easier than from AVR to ARM.