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Message
From: Uwe Bonnes <bon@e...>
Date: Thu, 2 Oct 2003 19:03:15 +0200
Subject: Re: [usb] Any UTMI Phy available in small orders
>>>>> "Rudolf" == Rudolf Usselmann <rudi@a...> writes:
...
Rudolf> I'm not sure what a catalog distributor is or what you mean with
A "catalogue distributor" has a printed catalogue with fixed prices,
e.g. like Farnell or RS-Components. For "Normal" distributors you need to
get a quote for every devices, with the billing system of most "normal"
distributors" mostly needing the full qualified device name, no Wildcard
allowed. So if there are devices with different speed or different package
option, and you need any, you have to ask explicit of any combination until
some part is available.
Rudolf> "normal" distributors, but you should check the web sites of PHY
Rudolf> manufacturers who their distributors are. Almost every
Rudolf> distributor I know will sell you single units. Try Pioneer,
Rudolf> Arrow and Avnet for example.
>From those, only Avnet is present in Germany, and e.g. for the Xilinx XCF02
Platform Flash ( a 5 Euro part) a minimum order of 20 is needed.
Rudolf> Here is a very useful tool to find distributors:
Rudolf> http://findchips.com/avail
Yes, it is. Thanks for that link.
However regarding the UTMI PHY chips, there is no match for the ISP1501/2/3,
USS2X1, GT3200, UPD720210 and KL5KUSB.
The CY7C68001 seems available in sensible number ( 26 at 6.31$ each) from
Future. I have to take a closer look at that chips. It seems to have much of
the functionality of your USB2 core...
Rudolf> Distributors within Germany tend to be very arrogant and like to
Rudolf> avoid dealing with the small guys.
Good to hear that I am not alone with that observation. And bad for my
country...
Rudolf> Try ordering over the net
Rudolf> from the US directly.
Rudolf> Sometimes you can email the companies directly and ask for free
Rudolf> samples. Some companies are very quick sending those out.
Thanks for those tips and your core.
What I want to do:
1. Create a simple plugin board for my Memec 2S200 PCI board with the USB
PHY (or the SX2) and USB connector. Get your core or the SX2 to write and
read some registers implemented inside the Spartan, some registers
connected to the LED display of the Memec board. Write some (linux)
software to set and read to those registers and finally get the LED
display do something triggered by Software on the Linux PC.
2. If 1., works: Replace some custom PC card using some custom external bus
(not done by me) by USB. The external hardware contains about 200
registers (mostly r/w, some ro and some wo) with a maximim data width of
20 bits. While setting and reading those registers may take some time, in
one mode, a lot of data needs to be transferred ( up to 4 MiWords of 16
bit data) at high speed. I hope to implement this transfer as a USB bulk
transfer. What transfer rate could be expected?
Bye
--
Uwe Bonnes bon@e...
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
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