Has anyone tried the Silicon Labs USB chips (uControllers)?  They look
pretty decent.


On 12/24/05, Seitai Chen <seitai.chen@gmail.com> wrote:
>
> Hi Chen,
>
>     I had the chance to use the Cypress FX2 USB Chip (I used the 68013
> chip) and I liked everything about the chip except for its price. I
> really think that re-enumeration is a very clever idea and that the chip
> itself actually supports Hi-Speed mode (480 Mbps) instead of just Full
> Speed (12Mbps) like the PIC USB chips. They actually have a lot of
> support for the chip, everything driver to firmware source code in C and
> app notes. Overall a nice little enhanced 8051 microcontroller w/ a very
> powerful USB hardware engine. The most impressive thing about the FX2
> chip was the fact that there was a dedicated programmable FIFO (GPIF)
> that had a programmable parallel interface which allows it to
> communicate w/ outside parallel devices while bypassing the the slow
> microcontroller which was only 12 mips. This greatly improves ability to
> stream large quantity of data (to a hard drive etc...).
>     The only thing that really bugged me about Cypress was that their C
> compiler (Keil, I think...) wasn't free and the trial edition had some
> severe size limitation to it, and the fact that the firmware isn't
> offered in assembly...
>
> ~Terry
>
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--


Shawn Wilton (b9 Systems)
http://black9.com
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