gnupic: USB
Subject:
Re: USB
From:
Jesse Lackey ####@####.####
Date:
21 Mar 2002 19:26:44 -0000
Message-Id: <3C9A332D.3020704@celestialaudio.com>
Hi, in 98 I used a $495 anchor chips dev system, I started with an intel
usb chip+kit one but got fed up with them (bad docs, poor, minimal
examples). The docs for the anchor part (they were later acquired by
cypress) were a bit rough but there were plenty of examples and stuff
worked. I even used SDCC for the 8051 back then ... it was pretty
rough, I found numerous bugs in it.
Anyway, I was hoping to do it all with a PIC to get my PIC skills up.
(I did mean the 12mbps "full speed" ... I'm still in 1998 land)
Tx for the email
Jesse
Eric Smith wrote:
>>At one point in 1998 I had a 8051-based very very minimally functional
>>USB audio device operating with Win98. I foolishly didn't finish the
>>project, but I've been thinking of picking it up again since USB audio
>>devices are supported in linux. (But with PIC instead).
>>
>>Has anyone interfaced a PIC with a high-speed USB peripheral controller
>> chip? This is probably better asked on the piclist, but thought I'd
>>try here first.
>>
>
> I've been waiting for some time for the Cypress EZ-USB/FX2 to become
> real. They've had silicon for a while, but as far as I'm concerned
> such things aren't "real" until you can actually get parts and a
> development kit in hand. (I don't count early access to select
> customers.) Anyhow, it looks like the CY3681 development kit for it
> is finally available to anyone for $495.
>
> If you already have some 8051 code, I'd suggest using the EZ-USB/FX2
> (which uses a high-speed 8051 core), and not using a PIC. I've used
> the EZ-USB/FX, and it's a nice part. The 8051 isn't my favorite
> architecture, but I can live with it.
>
> On re-reading your question, I'm not sure now whether you really
> meant the new high-speed (480 Mbps) or what's now called "full speed"
> (12 Mbps). For 12 Mbps, I recommend using the EZ-USB/FX and forgetting
> about the PIC.
>
> Eric
>
>
>
>
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