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AN3959 데이터시트(PDF) 56 Page - STMicroelectronics

부품명 AN3959
상세설명  The purpose of this application note is to describe
PDF  65 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3959 데이터시트(HTML) 56 Page - STMicroelectronics

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Examples of code (TV SoC)
AN3959
56/65
Doc ID 022081 Rev 3
*/
void STA381BWX_Powerdownonoff(unsigned char FFX_Powerflag){
I2Cm_Rx(&I2C_buf1,FFX_CONFIGURE_F,1,FFX_I2C_ADDR);
I2C_buf1&=0xBF;
I2C_buf1+=((FFX_Powerflag)<<6);
I2Cm_Tx(&I2C_buf1,FFX_CONFIGURE_F,1,FFX_I2C_ADDR);
}
/*
Set Crossover
FFX_CrossOver value have define as constant value
*/
void STA381BWX_CrossOver(unsigned char FFX_CrossOverValue){
I2Cm_Rx(&I2C_buf1,FFX_AUTO2,1,FFX_I2C_ADDR);
I2C_buf1&=0x0F;
I2C_buf1+=(FFX_CrossOverValue<<4);
I2Cm_Tx(&I2C_buf1,FFX_AUTO2,1,FFX_I2C_ADDR);
}
/* the volume system consist of main volume and channel volume, the
main volume is responsible for the overall system control, it's
range from -127.5dB to 0dB, every step as 0.5dB,
Mastervolume=|dbrequest*2|;
0=0dB
0*2
255=-127.5dB
127.5*2
*/
void STA381BWX_SetMasterVolume(unsigned char MasterVolume)
{
I2C_buf1=MasterVolume;
I2Cm_Tx(&I2C_buf1,FFX_MAIN_VOLUME,1,FFX_I2C_ADDR);
return;
}
void STA381BWX_SetMasterMute(unsigned char Mute)
{
unsigned char Tempdata1,Tempdata2,Tempdata3,Tempdata;
if(Mute==0)
{



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