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feiutm9898
Joined: 31 May 2004
Posts: 227
Helped: 4
Location: Singapore
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 11 Jan 2007 13:42 renesas dsp |
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Renesas have dual core microcomputer (1 high speed CPU and 1 DSP) whereas TI DSP chip provide good DSP processing but no CPU.
What do you think suitable way for low cost design? If decide to use TI DSP chip may cause one more MCU. This is likely not a good way.
Can anyone comment on this?
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Nandulal
Joined: 23 Feb 2006
Posts: 98
Helped: 1
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26 Jul 2007 14:19 iva2+ -pandora |
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| Are you looking from cost wise or performance wise?
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Tamasco
Joined: 27 Jun 2006
Posts: 168
Helped: 11
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03 Dec 2007 16:54 what is a dsp chip |
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The TI OMAP series are also dual core processors!!
# OMAP5910 - ARM9 + C55x DSP
# OMAP5912 - ARM9 + C55x DSP
#OMAP3430 - ARM Cortex A8 + ISP (Image Signal Processor) + PowerVR SGX 2D/3D
Graphics Accelerator + IVA2+ (Imaging and Video Accelerator)
#OMAP-DM270 - ARM7 + C54x DSP
#OMAP850 - ARM926EJ-S + GSM/GPRS digital baseband + stacked EDGE
co-processor
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03 Dec 2007 16:54 Ads |
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mowgli
Joined: 05 Apr 2002
Posts: 142
Helped: 20
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06 Dec 2007 21:12 texas instruments dsp 54xx |
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You have also to consider that TI produces high performances devices, like the C6x series, capable of high speed (the C6455 runs up to 1.2 GHz clock frequency) which can perform simultaneously tasks normally reserved to GPP processors (control flow, device interface and so on) and DSP operations (MAC, FFT etc.).
Of course such devices are not the cheapest, but you should consider the total saving in the BOL (bill of material) you obtain by substituting several devices (GPP/MCU + low-end DSPs used as co-processors) with one device.
Obviously you always have to evaluate the target application before making such a choice: just think that changing the platform implies that you should do a porting of all your SW to another environment and in case of DSP this could mean rewriting almost all the optimized assembly routines obtained after months/years spent debugging!
Regards
Mowgli
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