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From: Ulf Samuelsson on 4 May 2008 10:59
"www.interfacebus.com" <Interfacebus.Engineer(a)gmail.com> skrev i meddelandet
news:c6648f12-e2c5-453a-9c84-cbd7d8de4fbe(a)k37g2000hsf.googlegroups.com...
On May 1, 7:00 pm, mach7 <mach7so...(a)gmail.com> wrote:
> I know very little about USB, so excuse the naive question. I'm
> looking for an IC that I can interface with a microcontroller (in my
> case, the ATMega32) that will let me communicate with a computer over
> USB. My project involves large data transfers (for logging purposes)
> and serial / UART is too slow. Any direction would be helpful.
>
> Thanks,
> -J


The AT90USBxxx chips will allow you to do
a bulk transfer, which seems to be more inline
with your needs than a USB<->Serial chip.

--
Best Regards,
Ulf Samuelsson
This is intended to be my personal opinion which may,
or may not be shared by my employer Atmel Nordic AB


From: Mark Borgerson on 4 May 2008 13:22
In article <fvkj8p$cqn$1(a)aioe.org>, ulf(a)a-t-m-e-l.com says...
> "www.interfacebus.com" <Interfacebus.Engineer(a)gmail.com> skrev i meddelandet
> news:c6648f12-e2c5-453a-9c84-cbd7d8de4fbe(a)k37g2000hsf.googlegroups.com...
> On May 1, 7:00 pm, mach7 <mach7so...(a)gmail.com> wrote:
> > I know very little about USB, so excuse the naive question. I'm
> > looking for an IC that I can interface with a microcontroller (in my
> > case, the ATMega32) that will let me communicate with a computer over
> > USB. My project involves large data transfers (for logging purposes)
> > and serial / UART is too slow. Any direction would be helpful.
> >
> > Thanks,
> > -J
>
>
> The AT90USBxxx chips will allow you to do
> a bulk transfer, which seems to be more inline
> with your needs than a USB<->Serial chip.
>
>
The FTDI chips also use the bulk transfer mode. It makes
the most sense for any device where you want high
data rates with intermittent transfers and guaranteed
end-to-end delivery.


Mark Borgerson

From: pinik on 5 May 2008 06:24
>On May 1, 4:00 pm, mach7 <mach7so...(a)gmail.com> wrote:
>> I know very little about USB, so excuse the naive question. I'm
>> looking for an IC that I can interface with a microcontroller (in my
>> case, the ATMega32) that will let me communicate with a computer over
>> USB. My project involves large data transfers (for logging purposes)
>> and serial / UART is too slow. Any direction would be helpful.
>>
>> Thanks,
>> -J
>
>Just get the AT90USB1287. It has everything you needed.
>
Lots of free USB stuff on my site including verilog code and
explainations:
http://bknpk.no-ip.biz/usb_1.html


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