uda1341.c

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//======
// iis device driver
//======
#include "includes.h"

#define F_L3ModeSet()    rGPBDAT|=(1<<2)   // GPB^2...TOUT2
#define F_L3ModeClear()  rGPBDAT&=~(1<<2)  // GPB^2...TOUT2
#define F_L3DataSet()    rGPBDAT|=(1<<3)   // GPB^3...TOUT3
#define F_L3DataClear()  rGPBDAT&=~(1<<3)  // GPB^3...TOUT3
#define F_L3ClockSet()   rGPBDAT|=(1<<4)   // GPB^4...TOUT4
#define F_L3ClockClear() rGPBDAT&=~(1<<4)  // GPB^4...TOUT4

void F_Uda1341Initial(INT8U Mode){
    //INT16U Index;

    F_L3ModeSet();
    F_L3DataSet();
    F_L3ClockSet();
    F_Uda1341L3AddressWrite(0x14+2);
    F_Uda1341L3DataWrite(0x60);
    F_Uda1341L3AddressWrite(0x14+2);
    if(CodecParam[IisCtrl.CodecIndex].Offset) F_Uda1341L3DataWrite(0x18);
    else F_Uda1341L3DataWrite(0x28);
    F_Uda1341L3AddressWrite(0x14+2);
    F_Uda1341L3DataWrite(0xc1);
    if(Mode==UDA_RECORD_MODE){ 
        F_Uda1341L3AddressWrite(0x14+2);
        F_Uda1341L3DataWrite(0xe3);
        F_Uda1341L3AddressWrite(0x14+0);
        F_Uda1341L3DataWrite(0x7b);
        F_Uda1341L3DataWrite(0xc4);
        F_Uda1341L3DataWrite(0xf0);
        F_Uda1341L3DataWrite(0xc0);
        F_Uda1341L3DataWrite(0xe4);
        F_Uda1341L3DataWrite(0xc1);
        F_Uda1341L3DataWrite(0xe4);
        F_Uda1341L3DataWrite(0xc2);
        F_Uda1341L3DataWrite(0xf9);    
    }
}
void F_Uda1341L3AddressWrite(INT8U Address){
    INT8U i,j;

    F_L3DataClear();
    //F_L3ClockSet(); // ??
    //for(i=0;i<10;i++); // L3 tsu >190ns
    //F_L3ModeSet(); // ??
    //for(i=0;i<10;i++); // L3 tsu >190ns
    F_L3ModeClear();
    for(i=0;i<10;i++); // L3 tsu >190ns    
    for(i=0;i<8;i++){
        if(Address&0x01){
            F_L3DataSet();
            F_L3ClockClear();           
            for(j=0;j<10;j++);
            F_L3ClockSet();            
            for(j=0;j<10;j++);
        }
        else{
            F_L3DataClear();
            F_L3ClockClear();           
            for(j=0;j<10;j++);
            F_L3ClockSet();            
            for(j=0;j<10;j++);
        }  
        Address>>=1;  
    }
    //F_L3ClockSet();   // no need
    F_L3ModeSet();
    for(j=0;j<10;j++);
}
void F_Uda1341L3DataWrite(INT8U Data){
    INT8U i,j;

    F_L3DataClear();
    //F_L3ClockSet(); // no need
    //for(i=0;i<10;i++); // L3 tsu >190ns
    //F_L3ModeSet(); 
    //for(i=0;i<10;i++); // L3 tsu >190ns
    F_L3ModeClear();
    for(i=0;i<10;i++); // L3 tsu >190ns
    F_L3ModeSet();
    for(i=0;i<10;i++); // L3 tsu >190ns
    for(i=0;i<8;i++){
        if(Data&0x01){
            F_L3DataSet();
            F_L3ClockClear();           
            for(j=0;j<10;j++);
            F_L3ClockSet();            
            for(j=0;j<10;j++);
        }
        else{
            F_L3DataClear();
            F_L3ClockClear();           
            for(j=0;j<10;j++);
            F_L3ClockSet();            
            for(j=0;j<10;j++);
        }  
        Data>>=1;  
    }
    //F_L3ClockSet(); // no need             
    //for(j=0;j<10;j++);
    F_L3ModeClear();
    for(j=0;j<10;j++); 
    F_L3ModeSet();
    for(j=0;j<10;j++);
}
#define UDA1341_MAX_VOLUMN      61
void F_Uda1341VolumnAdjust(INT16U Volumn){
    F_L3ClockSet();
    F_L3ModeSet();
    F_L3DataClear();
    Volumn=(Volumn*UDA1341_MAX_VOLUMN)/0xffff; // Volumn=0~0xffff...65525
    F_Uda1341L3AddressWrite(0x14);
    F_Uda1341L3DataWrite(UDA1341_MAX_VOLUMN-Volumn);
}