[hpsdr] [FPGA_USB] Review/Comments FPGA_USB Board - April 5, 2006

[Eric Ellison]

Lyle

Do I hear Pic-a-star creeping in here? (smile). Wonderful project! I can't
keep up with all the posts just reading backwards! Basically I see this as
Pic-a-star on a buss, with a FPGA and some other distributed stuff instead
of a PIC! (smile again!)

Eric


-----Original Message-----
From: hpsdr-bounces at hpsdr.org [mailto:hpsdr-bounces at hpsdr.org] On Behalf Of
Lyle Johnson
Sent: Friday, April 07, 2006 6:01 PM
To: Christopher T. Day
Cc: High Performance Software Defined Radio Discussion List
Subject: Re: [hpsdr] [FPGA_USB] Review/Comments FPGA_USB Board - April 5,
2006

***** High Performance Software Defined Radio Discussion List *****

> ...Phil commented that he figured the FX2 would essentially
> always be loaded via USB at turn-on, hence the I2C EEPROM wouldn't be
> needed. True in a lot of scenarios, and it could normally be unpopulated
> like the Xylo, but there have been some messages going by figuring to
> have a DSP engine in the Atlas box so, once firmware/configurations were
> downloaded, the PC was no longer needed. [Not sure what these folks have
> in mind for an interface, but a beacon might not need much of one.] 

An LCD and a couple of a couple of encoders.

>...
> And one last bit. What do we intend to do about a USB VID/DID (Vendor
> ID/Device ID) pair? As Phil points out, even though the FX2 by necessity
> will come up with one if nothing else is done, that pair belongs to
> Cypress and their manual explicitly states it is _not_ to be used for
> "production" devices. One of the I2C EEPROM's jobs is to supply a
> different one. Official IDs can be had from www.usb.org, but at a price
> of about $2000 as far as I can see. Presumably we'd only need one VID
> for all the projects we do, but that's still a lot of money from my
> perspective.

It can be quite cheap. <http://www.mecanique.co.uk/products/usb/pid.html>

73,

Lyle KK7P

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