AN3959 datasheet(59/65 Pages) STMICROELECTRONICS

Part #	AN3959

Description	The purpose of this application note is to describe

PDF	65 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

Logo

59 / 65 page

AN3959

Examples of code (TV SoC)

Doc ID 022081 Rev 3

59/65

I2C_buf1+=(FilterlinkFlag<<4);

I2Cm_Tx(&I2C_buf1,FFX_CONFIGURE_D,1,FFX_I2C_ADDR);

}

Set the FFX PostScale Link or not

PostscalelinkFlag=0;each channel use the own filter

PostscalelinkFlag=1;each channel's filter setting same as

channel1's

void STA381BWX_PostscaleLink(unsigned char PostscalelinkFlag)

{

I2Cm_Rx(&I2C_buf1,FFX_CONFIGURE_D,1,FFX_I2C_ADDR);

I2C_buf1&=0xF7;

I2C_buf1+=(PostscalelinkFlag<<3);

I2Cm_Tx(&I2C_buf1,FFX_CONFIGURE_D,1,FFX_I2C_ADDR);

}

void STA381BWX_Bass(unsigned char basssetting)

{

basssetting=basssetting+1;

I2Cm_Rx(&I2C_buf1,FFX_TONEBASS,1,FFX_I2C_ADDR);

I2C_buf1&=0xF0;

I2C_buf1+=basssetting;

I2Cm_Tx(&I2C_buf1,FFX_TONEBASS,1,FFX_I2C_ADDR);

}

Set the FFX Treble value, 2dB every step

treblesetting=0=-12dV

treblesetting=12=+12dB

void STA381BWX_Treble(unsigned char treblesetting)

{

treblesetting=treblesetting+1;

I2Cm_Rx(&I2C_buf1,FFX_TONEBASS,1,FFX_I2C_ADDR);

I2C_buf1&=0x0F;

AN3959 Datasheet(PDF) 59 Page - STMicroelectronics