Complete Communications Engineering

With the MIPS® CorExtend™ Capability, VOCAL Achieves High-End DSP-Like Performance on an Industry-Standard Microprocessor

AMHERST, N.Y., January 27, 2003 – VOCAL Technologies, Ltd., a leading application developer of software and hardware for the communications industry, today announced that is has shown multiple flavors of xDSL baseband or 802.11 MAC functions can be subsumed into a new Pro Series microprocessor core from MIPS Technologies (see companion press release dated January 27, 2003 from MIPS Technologies). This capability enables value-enhanced multi-protocol consumer communication SOCs, with smaller die size than what can be achieved with a traditional DSP implementation.

The Pro Series family of cores from MIPS Technologies features the CorExtend capability that enables designers to supercharge their design’s performance by adding application-specific knowledge and instructions to a 32-bit core MIPS core. This capability is unique among industry-standard architectures and underscores the power and ability of a general purpose microprocessor to subsume the hardwired logic of an SOC. In turn, engineers can reduce total design costs by reducing silicon area and design time.

“The use of MIPS Technologies’ new CorExtend capability provides a very powerful mechanism to extend the performance of an industry-standard architecture in ways that eliminate part of the design effort of DSP-intensive designs,” said Dr. Victor Demjanenko, CTO of VOCAL Technologies. “Now, MIPS licensees can replace DSP functionality all together by leveraging the work our engineers have done and exploiting the parallelism in the MIPS architecture. Ultimately, we expect broad adoption of this technology.”

“VOCAL has given SOC designers a proven pathway to stay ahead of the rapidly changing communications standards with products that leverage and extend the functionality of an industry-standard processor,” said Brad Holtzinger, director of systems solutions for MIPS Technologies. “The MIPS core, with its efficient RISC instruction set and optimized C compilers, used native instructions and the CorExtend capability to perform the signal processing functions. The result is lower SOC die size and streamlined SOC programming models.”

Benchmark Results from VOCAL Technologies

The comparison table below illustrates benchmarks which are representative of the performance possible using a 32-bit Pro Series core from MIPS Technologies and VOCAL Technologies optimized algorithms and specific implementations:


Optimized Software (No Pro Instructions)

VOCAL Software and Pro



Reed Solomon
Encode Syndrome (204,188)

8237 cycles per block

1184 cycles per block

Reed Solomon Decode Syndrome


37,089 cycles per block

421 cycles per block

1680 cycles per block

460 cycles

AES Encrypt

(128-bit key)

774 cycles per block

64 cycles per block

227 cycles per block

AES Decrypt

(128-bit key)

837 cycles per block

64 cycles per block

268 cycles per block

FFT Radix 2

512 Complex

34,560 cycles per
512 FFT

3,583 cycles per
512 FFT

9,416 cycles per
512 FFT

4,500 est.

About VOCAL Technologies, Ltd.

Founded in 1986, VOCAL Technologies, Ltd., is an industry leader in providing innovative telecommunications and networking solutions to a large base of international OEM customers and integrators. The company supports all major DSP platforms and has the industry’s largest data and telephony software modem as well as 802.11 and GPRS libraries. VOCAL Technologies is headquartered in Amherst, NY, and has offices in Barcelona, Spain. For more information, visit

# # #

MIPS is a registered trademark in the United States and other countries, and Pro, Pro Series and CorExtend are trademarks of MIPS Technologies. All other trademarks referred to herein are the property of their respective owners.