ES9080 datasheet(134/146 Pages) ESS

134 / 146 page

CONFIDENTIAL ADVANCE INFORMATION 0.4.3

ES9080 Product Datasheet

ESS TECHNOLOGY, INC. 109 Bonaventura Drive, San Jose, CA 95134, USA Tel (408) 643-8800 WWW.ESSTECH.COM

134

w 0x90 128 0xCC; //Set the NSMOD dither phases for best performance if summing channels

together, (NOTE: not strictly needed for 8 channel mode)

w 0x90 129 0x54; //Set NSMOD dither type

w 0x90 131 0x44; //Set the Amount of dither into the NSMOD CH1/2 quantizer to best

linearity

w 0x90 132 0x44; //Set the Amount of dither into the NSMOD CH3/4 quantizer to best

linearity

w 0x90 133 0x44; //Set the Amount of dither into the NSMOD CH5/6 quantizer to best

linearity

w 0x90 134 0x44; //Set the Amount of dither into the NSMOD CH7/8 quantizer to best

linearity

//DRE Registers

w 0x90 136 0xFF; //Set the DRE to turn off the THDR at low volume for power saving, and to

swap analog and digital gain at low volume for best DNR

w 0x90 139 0xFF; //Allow DRE to still trigger if there is a small DC offset in the music.

(Some recordings have small DC offsets in them)

w 0x90 140 0x56; //Set DRE digital gain of CH1/3/5/7 to 16.37dB to match the Analog

attenuate amount when DRE turns on

w 0x90 141 0x1A; //Set DRE digital gain of CH1/3/5/7 to 16.37dB to match the Analog

attenuate amount when DRE turns on

w 0x90 142 0x56; //Set DRE digital gain of CH2/4/6/8 to 16.37dB to match the Analog

attenuate amount when DRE turns on

w 0x90 143 0x1A; //Set DRE digital gain of CH2/4/6/8 to 16.37dB to match the Analog

attenuate amount when DRE turns on

w 0x90 144 0xF1; //Set DRE ON theshold to -48dB

w 0x90 145 0x0C; //Set DRE ON theshold to -48dB

w 0x90 146 0x84; //Set DRE OFF theshold to -28dB

w 0x90 147 0x81; //Set DRE OFF theshold to -28dB

w 0x90 148 0x8F; //Set DRE decay rate (time it takes to automatically engage DRE if the

signal drops below the DRE ON threshold

//Enable Audio

w 0x90 92 0x10;

//Toggle DAC clock Resync to line up all the clocks in the DAC core for

best analog performance

w 0x90 92 0x0F;

//Toggle DAC clock Resync to line up all the clocks in the DAC core for

best analog performance

ES9080 Datasheet(PDF) 134 Page - ESS Technology,Inc