pll2.c

来自「dsp5509的pll2使用例程」· C语言 代码 · 共 65 行

/*
 *  Copyright 2002 by Texas Instruments Incorporated.
 *  All rights reserved. Property of Texas Instruments Incorporated.
 *  Restricted rights to use, duplicate or disclose this code are
 *  granted through contract.
 *  
 */
/* "@(#) DSP/BIOS 4.80.208 12-06-02 (barracuda-l19)" */
/******************************************************************************\
*           Copyright (C) 2000 Texas Instruments Incorporated.
*                           All Rights Reserved
*------------------------------------------------------------------------------
* MODULE NAME... MCBSP
* FILENAME...... pll2.c
* DATE CREATED.. Tu 11/14/2000 
* PROJECT....... Chip Support Library
* COMPONENT..... 
* PREREQUISITS.. 
*------------------------------------------------------------------------------
* HISTORY:
*   11/14/2000  (IM) Created
*  
*------------------------------------------------------------------------------
* DESCRIPTION:  
*   
* This is an example for PLL_config() function for C5509 (Digital PLL)
\*----------------------------------------------------------------------*/
#include <csl.h>
#include <csl_pll.h>

Uint16 x;
Uint32 y;
CSLBool b;

PLL_Config  myConfig      = {
  0,    //IAI: the PLL locks using the same process that was underway 
                //before the idle mode was entered
  1,    //IOB: If the PLL indicates a break in the phase lock, 
                //it switches to its bypass mode and restarts the PLL phase-locking 
                //sequence
  7,    //PLL multiply value; multiply 7 times
  1             //Divide by 2 PLL divide value; it can be either PLL divide value 
                //(when PLL is enabled), or Bypass-mode divide value
                //(PLL in bypass mode, if PLL multiply value is set to 1)
};


main()
{

        CSL_init();
        
        PLL_config(&myConfig);


        asmtest();      // Put a loop to observe output frequencies
}



/******************************************************************************\
* End of pll2.c
\******************************************************************************/