ES9826 datasheet(12/88 Pages) ESS

12 / 88 page

ES9826 Datasheet

VERSION 0.1.2

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

GPIO Table

In analog input mode, DC blocking can be enabled and/or disabled by setting GPIO5.

In digital PDM input mode, GPIO4 and GPIO5 are the PDM data and PDM_CLK, respectively.

GPIO3/DATA2 is always the digital data output, either in hardware TDM, PCM, or S/PDIF modes.

GPIO #

Input/Output

HW3 State

HW mode function

DATA2/GPIO3

Output

0 / 1

PCM data

Pull 0 / Pull 1

S/PDIF data

GPIO4

Input

0 / Pull 0

Must connect to Ground

GPIO5

Input

0 / Pull 0

DC Block enable

Table 6 – Analog ADC GPIO functions in Hardware mode

GPIO #

Input/Output

HW3 State

HW mode function

DATA2/GPIO3

Output

0 / 1

PCM data

Pull 0 / Pull 1

S/PDIF data

GPIO4

Input

Pull 1 / 1

PDM data

GPIO5

Output

Pull 1 / 1

PDM clock

Table 7 – Digital PDM GPIO functions in hardware mode

Mute

Set MUTE_MCLK_CTRL (Pin 1) to mute the output while in Hardware Mode:

HW MUTE Control (Pin 1)

Condition

Mute (MCLK 24.576MHz)

Unmute (MCLK 24.576MHz)

Pull 0

Mute (MCLK 49.152MHz)

Pull 1

Unmute (MCLK 49.152MHz)

Table 8 – Mute Control for HW mode configuration

Note: If MUTE_MCLK_CTRL (Pin 1) is set incorrectly, then it may seem that the ADC has higher noise than specified.

ES9826 Datasheet(PDF) 12 Page - ESS Technology,Inc

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