Transcript Document
Building Power Smart Applications with TI’s Power Measurement and Management Tools Presentation begins live from Dallas December 11, 2002 7:00 a.m. and 11:00 a.m. Central Standard Time (Dallas Time) TMS320C5000, TMS320C55x, C55x, and Code Composer Studio are trademarks of Texas Instruments, Inc. Building Power Smart Applications with TI’s Power Measurement and Management Tools TMS320C5000, TMS320C55x, C55x, and Code Composer Studio are trademarks of Texas Instruments, Inc. 1 © Copyright © 2002 Texas Instruments. All rights reserved. Host: Lori Vidra TMS320C5000™ DSP Tools Product Manager 2 Presenter: Ed Anderson Software Engineer Software Development Systems 3 Agenda Importance of Power Management (PM) Support for Effective PM TI’s New Support for PM Power-Aware Development Paradigm Summary Questions & Answers 4 Importance of Power Management Tomorrow’s portable applications will be power hungry Battery technology is tapped out MIPS and memory are not gating factors anymore Study shows that less than 20% of battery consumption goes to customer use Competitive advantage gained by power efficiency 5 The Question is How To . . . Measure With enough visibility to see power consumption hot spots Affect 6 power consumption power consumption With software changes to see immediate results The Power Management Answer is . . . Measuring Determine system power budget and estimate battery life Determine areas that can be tuned to consume less power Affecting 7 power power Dynamic power management capability requires both hardware and software support Consistent framework for accessing and managing power management capabilities Today’s Power Challenges Current development paradigm Research Build Measure Affecting power consumption is costprohibitive Power consumption hot spots unknown Need new paradigm 8 Earlier in development process Enables software developers as well as hardware developers TMS320C55x™ DSP Support for Power Management Programmable PLL for variable frequency DSP is operable at variable voltages Automatic low-power modes Domains can be idled 9 Controlled via assembly instruction DSP Starter Kit with Power Management Capabilities “Power friendly” DSK Software 10 Power measurement points for DSP and board Voltage regulation with fixed voltage points I/O pin pinned out for triggering Code Composer Studio™ Development Tools Power Analyzer Power Scaling Library Application notes TMS320C5510 DSP Starter Kit (DSK) TI’s New Tool: Power Analyzer 11 Measures power anywhere Simplifies power measurement Automatically instruments source code Correlates power to source code Provides view of peripheral usage Displays power data in tabular and graphical forms Power Analyzer Set-Up CCStudio Power Analyzer Plug-In IEEE 488 Software Software Hardware IEEE 488 Card USB Trigger Data Emulation C5510 DSK Current Data TEK Scope Current Probe System Power Analyzer’s Tabular View Access to detailed function-level data helps developer craft power-aware software Can be saved to file for further analysis 12 Total energy Maximum power Average power Peripheral usage Seamless interface to reports Chart power savings progress Power Analyzer’s Graphical View Dynamic view of power data Observe power consumption over time Identify exactly when peripherals are on and off Visualize where most power is consumed Power Consumption Time 13 Dynamic Power Management TI provides dynamic power management with its new Power Scaling Library (PSL) Apply PSL when CPU is not fully utilized Dynamic control of frequency and voltage Query operations Callbacks to user code Architected for porting to custom target hardware Utilizing the PSL results in power savings Frequency reduction – 1:1 power savings Voltage reduction – n:n2 power savings 14 Power Savings Example via PSL Power Savings Frequency Scaling – 54% Frequency & Voltage Scaling – 73% 15 Power Savings Example via PSL Power savings can be used for product differentiation 16 Software Development for Power – A New Paradigm Start Measure Power Build App Powe r OK? No Adjust Peripheral Activity Dynamic Power Management 17 Examine Peripheral Activity Examine CPU Load Yes Done Visualize Power TI Tools Power Analyzer Power Scaling Library What Does the New Paradigm Mean? Start Measure Power Build App Pow er OK? Yes Done No Adjust Peripheral Activity Dynamic Power Management Software Examine Peripheral Activity Visualize Power Examine CPU Load engineer can measure and affect power consumption Power tuning enabled earlier in development Results in time savings and cost reductions 18 Summary TI’s power management solutions extend battery life The C55x™ DSP architecture and C5510 DSK facilitate power management Power Analyzer measures and visualizes power consumption Power Scaling Library provides frequency and voltage scaling New 19 paradigm emerging as a result Lower development costs Quicker time to market Question & Answer Session 20