ES9080 datasheet(11/146 Pages) ESS

11 / 146 page

CONFIDENTIAL ADVANCE INFORMATION 0.4.3

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

ES9080 Product Datasheet

Soft Mute

When Mute is asserted the digital signal level will be smoothly ramped to minimum. When Mute is de-asserted the digital signal level will ramp back

up to the set volume levels. Asserting Mute will not change the value stored in the volume control register. The volume level and ramp rate are

controlled through the Volume Control Registers.

Mute can be engaged through either the automute feature or by setting the mute bits for any individual channel through the MUTE CTRL register.

Volume Control Registers

•

Registers 94-101: VOLUMEx

•

Mute Control Registers

•

Automute

Automute is disabled by default and is triggered when any one of the following conditions are met:

Mode

Detection Condition

Time

PCM

Data is lower than automute_level for

longer than the automute_time

2^18

(��_�� ∗ ��)

DoP

DSD data contains an equal number of 1s

and 0s in any 8 consecutive bits of data

2^18

(��_�� ∗ ��)

Table 2 - Automute configuration

The automute feature is enabled for each channel individually through the AUTOMUTE ENABLE register. The thresholds that trigger and disable

automute can be configured through the AUTOMUTE LEVEL and AUTOMUTE OFF LEVEL registers.

Automute Configuration Registers

•

ES9080 Datasheet(PDF) 11 Page - ESS Technology,Inc