dsp56000 Freescale Semiconductor, Inc, dsp56000 Datasheet - Page 178

• Manufacturer Part Number: dsp56000
• Description: 24-bit Digital Signal Processor Family Manual
• Manufacturer: Freescale Semiconductor, Inc

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SECTION 9.1 PLL CLOCK OSCILLATOR INTRODUCTION ........................... 3
SECTION 9.2 PLL COMPONENTS .................................................................. 3
SECTION 9.3 PLL PINS ................................................................................... 9
SECTION 9.4 PLL OPERATION CONSIDERATIONS ..................................... 11
9.2.1 Phase Detector and Charge Pump Loop Filter ................................... 4
9.2.2 Voltage Controlled Oscillator (VCO) ................................................... 5
9.2.3 Frequency Multiplier ........................................................................... 5
9.2.4 Low Power Divider (LPD) ................................................................... 5
9.2.5 PLL Control Register (PCTL) .............................................................. 5
9.4.1 Operating Frequency .......................................................................... 11
9.4.2 Hardware Reset .................................................................................. 11
9.4.3 Operation with PLL Disabled .............................................................. 12
9.4.4 Changing the MF0-MF11 Bits ............................................................. 12
9.4.5 Change of DF0-DF3 Bits .................................................................... 13
9.4.6 Loss of Lock ........................................................................................ 13
9.4.7 STOP Processing State ...................................................................... 13
9.4.8 CKOUT Considerations ...................................................................... 14
9.4.9 Synchronization Among EXTAL, CKOUT, and the Internal Clock ...... 14
9.2.5.1 PCTL Multiplication Factor Bits (MF0-MF11) - Bits 0-11 ............ 5
9.2.5.2 PCTL Division Factor Bits (DF0-DF3) - Bits 12-15 ..................... 6
9.2.5.3 PCTL XTAL Disable Bit (XTLD) - Bit 16 ..................................... 7
9.2.5.4 PCTL STOP Processing State Bit (PSTP) - Bit 17 ..................... 7
9.2.5.5 PCTL PLL Enable Bit (PEN) - Bit 18 .......................................... 8
9.2.5.6 PCTL Clock Output Disable Bits (COD0-COD1) - Bits 19-20 .... 8
9.2.5.7 PCTL Chip Clock Source Bit (CSRC) - Bit 21 ............................ 9
9.2.5.8 PCTL CKOUT Clock Source Bit (CKOS) - Bit 22 ....................... 9
9.2.5.9 PCTL Reserved Bit - Bit 23 ........................................................ 9
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