Re: Kopin

From Wear-Hard Mailing list Archive (WH) Maintained by R. Paul McCarty

Well, for example the spec says that the typical HCK cycle time is 166ns. 
Maybe if the micro had a lot of timer channels for the other signals it 
would be doable.  But it seems like most of the processing power of the 
micro would be dedicated to just generating the timing signals.  Then you 
have to generate a video signal.  So, I was thinking that the micro could do 
the video and the FPGA could do the timing.  Also, most of the pics dont 
have enough on-chip ram to have a video buffer.  Motorola just put out a 
80mhz version of the coldfire, but the setup is pretty expensive and most of 
the packages are BGA.

----- Original Message ----- 
From: "Paul-V Khuong" <>
To: "Wearable Hardware Discussion List" <>; "john 
McDonald" <>
Sent: Saturday, October 23, 2004 1:22 PM
Subject: Re: Kopin

> --- Ben Stickrod <> wrote:
> [...]
>> it.  Right now I don't have any micros that have
>> enough speed to get the job
>> done.  (just PICs and there max instruction time is
>> about 200 ns).  I
>> waiting on a FPGA development board that I ordered
>> from fpga4fun.com.
>
> How fast do you need to be able to output signals?
> Ubicom's SX series is PIC compatible, and pipelined,
> so it can get 1 IPC instead of 1/4. They also have a
> nice amount of pins, since they're marketed as virtual
> peripherals to replace multiple discrete components.
> IIRC, they sell them at 50 MHz and 75 MHz, but have
> been reliably overclocked to 100 MHz.
>
> Paul Khuong
>
>
>
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