pll1.c

来自「dsp5509的pll使用例程」· C语言 代码 · 共 60 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... PLL
* FILENAME...... pll1.c
* DATE CREATED.. Tue 07/03/2001
* PROJECT....... Chip Support Library
* COMPONENT..... 
* PREREQUISITS.. 
*------------------------------------------------------------------------------
* HISTORY:
*   07/03/2001  (IM) Created
*  
*------------------------------------------------------------------------------
* DESCRIPTION:  
*   
* This is an example of the usage of PLL_setFreq function on C5509.
*
* The following assumptions for the PLL CLKMD fields were implemented 
* in the PLL_setFreq() function:
*       - IAI = 0; the PLL locks using the same process that was underway 
*                               before the idle mode was entered.
*       - IOB = 1; If the PLL indicates a break in the phase lock, it 
*                               switches to its bypass mode and restarts the PLL 
*                               phase-locking sequence.
*       - PLLDIV = BYPASSDIV = div -1; 
*       - PLLENAB = 0 (bypass mode) if mul = 1, and 1 (PLL enabled) otherwise.
*
*
\******************************************************************************/
#include <csl.h>
#include <csl_pll.h>


main()

{ 
    CSL_init();
  
        PLL_setFreq(7,2);       //multiplier = 7; Divisor = 2; PLL - enabled

        asmtest();

}



/******************************************************************************\
* End of pll1.c
\******************************************************************************/