Product category: Microprocessors, Microcontrollers and DSPs
News Release from: Texas Instruments (April 2001-March 2006) | Subject: TMS320C5503, TMS320C5507 and TMS320C5509A
Edited by the Electronicstalk Editorial Team on 30 June 2004
DSPs cut mobile power
budgets to new lows
Three new low-power digital signal processors and new eXpressDSP Power Design Tools together enable developers to optimise power consumption to previously unattainable levels
Where other vendors can only show typical power consumption of core and memory, TI reckons it is the first company to 'tell the rest of the power story' with design tools that show detailed and modular power information of a DSP chip core, memory and peripherals and a methodology for measuring power running under real-world conditions.
This article was originally published on Electronicstalk on 30 June 2004 at 8.00am (UK)
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The combination of the industry's lowest power DSPs and the essential tools to optimise power consumption and maximise battery life gives TI's customers the competitive edge they need when creating best-of-class portable, multimedia products.
The new TMS320C5503, TMS320C5507 and TMS320C5509A DSPs offer an ideal combination of low power, performance, memory and peripherals for mobile, portable and other low-power, real-time signal processing applications.
These devices enable advanced low power consumption through: the industry's lowest standby power (0.12mW) - 114x lower than nearest competition; very low core/memory operating power - for example, 58mW at 108MHz; dynamic voltage/frequency scaling; multiple standby modes with ability to turn individual peripherals and internal functional units on and off; and multiple SRAM options (64, 128 or 256Kbyte) for efficient code fitting.
The C5503 is optimised for low-cost, low-power devices such as portable biometric or medical devices and handheld wireless applications.
The C5507 is for applications such as wireless gateways, voice over Internet protocol (VoIP), GPS and wireless speakerphones and offers a 500us 10bit ADC as well as USB 2.0 full-speed port for PC connectivity.
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The C5509A is optimised for multimedia-rich, mobile devices such as MP3 audio jukeboxes and infotainment devices and offers two MMC/SD ports, as well as a 500us 10bit ADC and USB 2.0 full-speed port.
Standard peripherals for all include three MCBSP ports, three timers, I2C bus, six-channel DMA, 16bit EMIF, 16bit EHPI and 36 GPIO.
These are the first devices with integrated USB at this low a level of power consumption for this class of DSP.
Determining accurate power consumption early in the design process is essential for making the right tradeoffs in performance, peripherals activity and external memory use in order to maximise battery life and reduce cost.
With the new eXpressDSP power design tools, TI will be the first to 'tell the rest of the power story' by eliminating the guesswork of determining actual power consumption and giving developers previously inaccessible visibility into devices.
These tools allow developers to consume only as much power as is actually necessary by dynamically turning off all peripherals and internal functional units when they are not needed and developers can now optimally configure devices based on accurate and detailed power consumption information, rather than blindly guess at how much power a device consumes.
There are four tools included in the eXpressDSP power design package.
First, power planning tools provide detailed chip-specific internal function and peripheral power consumption data to accurately plan application 'net' power consumption.
These planning tools include an easy 'how to' application note and a spreadsheet for easy trial configurations.
These tools give detailed internal functional unit and peripheral power consumption data specific to a particular DSP.
Developers are able to easily and quickly create trial configurations to determine 'net' power consumption for various memory and peripheral combinations.
Secondly, included in the Code Composer Studio (CCStudio) integrated development environment via update advisor, the power scaling library tool implements a trial configuration and is facilitated by optimised library code that provides a base software architecture supporting customisation and porting to custom target hardware.
The library supports dynamic control of run-time core frequency and voltage based on application mode, allows callbacks to user code before/after scaling operations to accommodate peripheral changes and provides query operations to determine current frequency, voltage, supported frequencies and scaling latencies.
Thirdly, through intimate integration with TI's DSP/BIOS real-time kernel included in CCStudio via update advisor, developers are able to automatically implement power saving strategies at an operating system level, resulting in more efficient boot-time power savings, automatic management of clock domains and sleep states, supervision and control of power scaling and central registry management for power event notifications.
Finally, using an application power measurement tool from National Instruments, developers can accurately profile power consumption based on actual application behaviour.
They can visually measure and analyse power by using the power measurement tool from National Instruments connected to the EVM320C5509A evaluation module (EVM) from Spectrum Digital or target prototypes.
Measurements include total energy, max/average power and peripheral usage.
Power/peripheral data can be viewed in tabular or graphical views either forward or backward through time, as well as saved for future use.
The new TMS320C5000T DSPs are sampling immediately with volume production slated for August 2004.
Recommended pricing starts at $7.50 for the C5503, $10.50 for the C5507 and $16 for the C5509A (10,000 unit pricing).
The eXpressDSP power design tools are available as follows.
The power planning tools are downloadable from the web for free.
The power scaling library and power manager in DSP/BIOS are included in Code Composer Studio (CCStudio) via update advisor.
Beta versions available now with production in 4Q 2004.
Free evaluation tools for CCStudio are available online.
The application power measurement tool from National Instruments requires hardware available from National Instruments for $800 as well as free evaluation software.
The EVM320C5509A evaluation module is available from Spectrum Digital for $1495.
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