TMS320F28069 功耗问题

TMS320F28069外部20M时钟  内部倍频到80M 外设时钟开启如下

 SysCtrlRegs.PCLKCR1.bit.EPWM1ENCLK = 0;//1;    // ePWM1

  SysCtrlRegs.PCLKCR1.bit.EPWM2ENCLK = 0;//1;    // ePWM2

  SysCtrlRegs.PCLKCR1.bit.EPWM3ENCLK = 0;//1;    // ePWM3

  SysCtrlRegs.PCLKCR1.bit.EPWM4ENCLK = 0;//1;    // ePWM4

  SysCtrlRegs.PCLKCR1.bit.EPWM5ENCLK = 0;//1;    // ePWM5

  SysCtrlRegs.PCLKCR1.bit.EPWM6ENCLK = 0;//1;    // ePWM6

  SysCtrlRegs.PCLKCR1.bit.EPWM7ENCLK = 0;//1;    // ePWM7

  SysCtrlRegs.PCLKCR1.bit.EPWM8ENCLK = 0;//0;//1;    // ePWM8

  SysCtrlRegs.PCLKCR0.bit.HRPWMENCLK = 0;//1;    // HRPWM

  SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 0;//1;     // Enable TBCLK within the ePWM

  SysCtrlRegs.PCLKCR1.bit.EQEP1ENCLK = 0;//1;    // eQEP1

  SysCtrlRegs.PCLKCR1.bit.EQEP2ENCLK = 0;//1;    // eQEP2

  SysCtrlRegs.PCLKCR1.bit.ECAP1ENCLK = 0;//1;    // eCAP1

  SysCtrlRegs.PCLKCR1.bit.ECAP2ENCLK = 1;    // eCAP2

  SysCtrlRegs.PCLKCR1.bit.ECAP3ENCLK = 0;//1;    // eCAP3

  SysCtrlRegs.PCLKCR2.bit.HRCAP1ENCLK = 0;//1;  // HRCAP1

  SysCtrlRegs.PCLKCR2.bit.HRCAP2ENCLK = 0;//1;  // HRCAP2

  SysCtrlRegs.PCLKCR2.bit.HRCAP3ENCLK = 0;//1;  // HRCAP3

  SysCtrlRegs.PCLKCR2.bit.HRCAP4ENCLK = 0;//1;   // HRCAP4

  SysCtrlRegs.PCLKCR0.bit.ADCENCLK = 1;      // ADC

  SysCtrlRegs.PCLKCR3.bit.COMP1ENCLK = 0;//1;    // COMP1

  SysCtrlRegs.PCLKCR3.bit.COMP2ENCLK = 0;//1;    // COMP2

  SysCtrlRegs.PCLKCR3.bit.COMP3ENCLK = 0;//1;    // COMP3

  SysCtrlRegs.PCLKCR3.bit.CPUTIMER0ENCLK = 1; // CPU Timer 0

  SysCtrlRegs.PCLKCR3.bit.CPUTIMER1ENCLK = 1; // CPU Timer 1

  SysCtrlRegs.PCLKCR3.bit.CPUTIMER2ENCLK = 1; // CPU Timer 2

  SysCtrlRegs.PCLKCR3.bit.DMAENCLK = 1;      // DMA

  SysCtrlRegs.PCLKCR3.bit.CLA1ENCLK = 1;     // CLA1

  SysCtrlRegs.PCLKCR3.bit.USB0ENCLK = 0;//1;  // USB0

  SysCtrlRegs.PCLKCR0.bit.I2CAENCLK = 0;//1;     // I2C-A

  SysCtrlRegs.PCLKCR0.bit.SPIAENCLK = 0;//1;     // SPI-A

  SysCtrlRegs.PCLKCR0.bit.SPIBENCLK = 0;//1;     // SPI-B

  SysCtrlRegs.PCLKCR0.bit.SCIAENCLK = 0;//1;     // SCI-A

  SysCtrlRegs.PCLKCR0.bit.SCIBENCLK = 0;//1;     // SCI-B

  SysCtrlRegs.PCLKCR0.bit.MCBSPAENCLK = 0;//1;   // McBSP-A

  SysCtrlRegs.PCLKCR0.bit.ECANAENCLK=0;//1;      // eCAN-A

  SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 0;//1;     // Enable TBCLK within the ePWM

其中使用了T0 T1 T2  ECAP2  ADC其他外设时钟都关掉了

但是实际测试下来 CPU功耗为 110毫安左右  我把工作的频率降下来 可是功耗还是不变！！

难道TMS320F28069功耗这么大吗？  有没有办法降低功耗呢？