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TMP320C2811PBKA bảng dữ liệu(PDF) 44 Page - Texas Instruments |
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TMP320C2811PBKA bảng dữ liệu(HTML) 44 Page - Texas Instruments |
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44 / 147 page ![]() Functional Overview 44 June 2004 SPRS257 3.7 System Control This section describes R281x oscillator, PLL and clocking mechanisms, the watchdog function and the low power modes. Figure 3−7 shows the various clock and reset domains in R281x devices that will be discussed. HSPCLK PLL X1/XCLKIN X2 Power Modes Control Watchdog Block C28x CPU Low-Speed Peripherals SCI-A/B, SPI, McBSP Peripheral Registers High-Speed Peripherals EV-A/B High-Speed Prescaler Low-Speed Prescaler Clock Enables GPIO MUX System Control Registers Peripheral Registers XF_XPLLDIS ADC Registers 12-Bit ADC 16 ADC Inputs HSPCLK LSPCLK I/O I/O Peripheral Reset SYSCLKOUT XRS Reset GPIOs eCAN Peripheral Registers I/O OSC CLKIN NOTE A: CLKIN is the clock input to the CPU. SYSCLKOUT is the output clock of the CPU. They are of the same frequency. Figure 3−7. Clock and Reset Domains The PLL, clocking, watchdog and low-power modes are controlled by the registers listed in Table 3−11. |
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