🚀 go-pugleaf

In article <1993Jan6.133516.14312@murdoch.acc.Virginia.EDU>,
fh8n@uvacs.cs.Virginia.EDU (Frank Houston) writes:
|> 	Hello DSP land
|> 
|> 	I am doing my phd in compiler work here at UVA. Does anyone know
|> the current prices Ti 320c33 , 21020, National Semi 64 Bit Chip.
|> Etc, I am most interested in the cheapest highest performance chip.

~$30 for low quantities of TI 320C31 (what's the C33?).  ~$100 for 21020.
You really need price quotes from the manufacturers for a specified
clock rate, volume and time frame.  I think you'll find the 33 MHz C31
to be the greatest bang for the buck for floating point processors.

In article <1ife71INNiv1@fido.asd.sgi.com> gints@prophet.esd.sgi.com (Gints Klimanis) writes:
>In article <1993Jan6.133516.14312@murdoch.acc.Virginia.EDU>,
>fh8n@uvacs.cs.Virginia.EDU (Frank Houston) writes:
>|> 	Hello DSP land
>|> 
>|> 	I am doing my phd in compiler work here at UVA. Does anyone know
>|> the current prices Ti 320c33 , 21020, National Semi 64 Bit Chip.
>|> Etc, I am most interested in the cheapest highest performance chip.
>
>~$30 for low quantities of TI 320C31 (what's the C33?).  ~$100 for 21020.
>You really need price quotes from the manufacturers for a specified
>clock rate, volume and time frame.  I think you'll find the 33 MHz C31
>to be the greatest bang for the buck for floating point processors.
>

There is a low cost version of the 21020 available: The 21010. 

Quoting from AD's Q&A-Sheet:

"The ADSP-21010 is a low-entry-price part for floating point DSP at $49.9 for
 100 pieces. It has great performance - it does a 1024-point complex FFT in
 1.54 ms, which is twice the performance of TI's 320C31 for lower cost."

"Key differences between 21020 and 21010:
 a)The 21010 is a 32-bit only processor: it handels 32-bit IEEE Floating
    Point format and 32-bit Fixed Point format. [...] There is no 40-bit
    mode, but designers of low-cost systems would only want 32-bits anyway.
 b) Cycle time: 80ns cycle time versus the 21020's 40ns cycle time.

"The 21010 is software-compatible with the 21020 (source and object code).
 The 21010 will be pin-compatible with the 21020 in the PQFP package 
 (304 pins)."

304 pins, oh dear! But around 100 of them are Vdd, GND or nc.

-Urs Probst   probst@nessie.cs.id.ethz.ch  Zurich Switzerland