FPGAs vs. DSPs: 瞧瞧未解的問題

chip123

這兩大門派有這三大問題纏鬥不休？精通這兩大門派的高手，如tommywgt...來切搓、討教一下吧!? :o

FPGAs vs. DSPs: A look at the unanswered questions
7 F' ~; s/ ?" j5 {) [http://www.dspdesignline.com/sho ... articleID=196802403

BDTI looks at the open questions about FPGAs' performance, cost, power, and ease of development. It also explains why FPGAs might benefit from the move to deep-submicron processes.

DSP DesignLine (01/11/2007 10:00 H EST)   

BDTI recently completed an in-depth analysis of FPGAs' suitability for DSP applications. We found that, in some high-performance signal processing applications, FPGAs have several significant advantages over high-end DSP processors. Our recent benchmark results (shown in Figure 1), for example, have shown that high-end, DSP-oriented FPGAs have a huge throughput advantage over high-performance DSP processors for certain types of signal processing. And FPGAs, which are not constrained by a specific instruction set or hardwired processing units, are much more flexible than processors.


- ?' X1 E$ _4 C7 j- iFigure 1. Results of the BDTI Communications Benchmark (OFDM)™

If market success were based solely on throughput or flexibility, FPGAs would appear to be on the verge of taking over the DSP market; in fact, according to a recent report from market research firm Forward Concepts, in 2005 Altera and Xilinx each had DSP FPGA revenues in excess of $200 million, selling more non-cell-phone DSP silicon than Freescale and Agere.

) s# e/ r' }# a& {& f6 x2 b& c3 EAre FPGAs energy hogs, or not?
! ]% g. ^7 b' n( W$ v% h+ wJust how useful are the new high-level tools?

Figure 2. Typical high-level tool flow

Can FPGAs use extra gates better than processors?
DSP processors have been the dominant processing engines for many DSP applications for decades, but that may be changing. FPGAs clearly have many advantages relative to DSP processors for some high-performance applications; while they are unlikely to completely eliminate the need for DSPs, they may well invade—or even take over—many of the applications in which DSP processors are used today.

About BDTI
BDTI enables engineers, marketers, and managers to make confident technical and business decisions about technologies for signal processing applications. For more BDTI resources, see www.BDTI.com.

dennis27

目前正在評估FPGA和DSP兩者的效益!!

十分感謝您的分享!!