evm5509_aic23_closecodec.c

来自「dsp 5509a MMC 卡 ID号读取 12Mhzx16=192M」· C语言 代码 · 共 32 行

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

/*
 *  ======== evm5509_aic23_closeCodec.c ========
 *  EVM5509_AIC23_closeCodec() implementation
 */
 
#include <evm5509.h>
#include <evm5509_aic23.h>

/*
 *  ======== EVM5509_AIC23_closeCodec ========
 *  Close the codec
 */
void EVM5509_AIC23_closeCodec(EVM5509_AIC23_CodecHandle hCodec)
{
    /* Disable codec data path */
    EVM5509_rset(EVM5509_MISC, EVM5509_rget(EVM5509_MISC) & 0xfe);

    /* Put codec in slave mode to stop driving outputs */
    EVM5509_AIC23_rset(hCodec, EVM5509_AIC23_DIGIF, EVM5509_AIC23_rget(hCodec, EVM5509_AIC23_DIGIF) & 0xbf);

    /* Turn the codec off */
    EVM5509_AIC23_rset(hCodec, EVM5509_AIC23_POWERDOWN, 0xff);
        
    /* Close data channel */
    MCBSP_close(EVM5509_AIC23_DATAHANDLE);
}