evmdm642_apll.c

来自「ti dm642 board library, good for dm642 d」· C语言 代码 · 共 28 行

/*
 *  Copyright 2004 by Spectrum Digital Incorporated.
 *  All rights reserved. Property of Spectrum Digital Incorporated.
 */

/*
 *  ======== evmdm642_apll.c ========
 *  Analog PLL control for the EVMDM642
 */

#include <csl.h>

#include "evmdm642.h"
#include "evmdm642_apll.h"

/* Write to the configuration register on the analog PLL */
void EVMDM642_APLL_rset(Uint16 data)
{
    /* Force a clear of the transmit complete bit */
    EVMDM642_rset(EVMDM642_ISR, 0x20);

    /* Write data to the APLL */
    *((volatile Uint32 *)(EVMDM642_SYNC_BASE + 4)) = data;

    /* Wait for transmission to complete */
    while ((EVMDM642_rget(EVMDM642_ISR) & 0x20) == 0);
}