initsrc.asm

来自「对ADSP21369的原理图和测试程序进行搜集」· 汇编 代码 · 共 35 行

/***************************************************************************************************
**  File:   initSRC.asm
**  Date:   7/29/05
**  Author: SH
**  Use:    ADSP-21369 EZkit SRC
**  Note:	Initializing SRC settings
**
*****************************************************************************************************/
#include <def21369.h>

.section/pm     seg_pmco;
.global _initSRC;

_initSRC:

  //============================================================
    //
    // Configure SRC Control Register (SRCCTL0).
    //
    //    SRC1_IN_I2S : SRC1 Serial Input Format= I2S mode
    //    SRC1_OUT_I2S: SRC1 Serial Output Format= I2S mode
    //    SRC1_OUT_24 : Output Word Length= 24 bits  
    //------------------------------------------------------------

ustat1= SRC1_IN_I2S | SRC1_OUT_I2S | SRC1_OUT_24;
dm(SRCCTL0)=ustat1;

// Enable SRC1 in a different cycle than setting the configuration
bit set ustat1 SRC1_ENABLE;
dm(SRCCTL0)=ustat1;    

_initSRC.end:  rts;