摘要
TMS32 0系列 DSP具有高性能、低成本等特点 ,在许多系统中得到了应用。为了有效降低系统的功耗 ,对 DSP芯片采用双电源供电是十分必要的。 TMS32 0 C2 0 6是 TMS32 0 C2 0 0 0系列中采用双电源供电的 1 6位定点 DSP产品。本文针对系统输入电压的不同情况介绍了两种TMS32 0 C2 0 6的双电源供电电路 ,该方案也适用于其它采用 5 V/3.3V供电的 DSP。
The TMS320 family digital signal processors(DSPs) have an architecture designed specifically for real-time signal processing.Its high performance as well as low cost and other characteristics make this family the ideal choice for a wide range of processing applications.It is important to use two power supply to decrease the power assume in many DSP-based system.This paper describes two options used to supply power to the TMS320C206-one member of the TMS320C2000 digital signal processor(DSP) product families.The TMS320C206 DSP requires 3.3V for the CPU and 5.0V for the I/O.The first solution applise when a design already has a regulated 5.0V power supply and requires only a 3.3V(LDO) Low Dropout regulator.The second solution applies an unregulated voltage input to both LDO regulators to generate the 5.0V and 3.3V voltages.As voltage requirements become stricter,tighter tolerance regulators,such as the TI TPS71/72/73 families of LDOs,are required.
出处
《微处理机》
2001年第4期11-12,15,共3页
Microprocessors
