ES9826 datasheet(9/88 Pages) ESS

9 / 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

28 QFN Pin Descriptions

Name

Pin Type

Reset

State

Pin Description

MISO/ADDR0/

MUTE_MCLK_CTRL

I/O

HiZ

Serial communication for SPI/I2C & HW interface pin, controlled

by MODE pin

SS/ADDR1/HW2

I/O

HiZ

Serial communication for SPI/I2C & HW2 interface pin,

controlled by MODE pin

SCLK/SCL/HW1

I/O

HiZ

Serial communication for SPI/I2C & HW1 interface pin,

controlled by MODE pin

MOSI/SDA/HW0

I/O

HiZ

Serial communication for SPI/I2C & HW0 interface pin,

controlled by MODE pin

MODE

I/O

HiZ

I2C/SPI Control selection or HW mode

RT1

HiZ

Reserved. Must be connected to DGND for normal operation.

CHIP_EN

I/O

HiZ

Active-high chip enable.

AVCC_ADC

Power

ADC reference voltage 3.3V Supply

IN_P1

HiZ

ADC Channel 1 differential positive (+) input

IN_M1

HiZ

ADC Channel 1 differential negative (-) input

IN_M2

HiZ

ADC Channel 2 differential negative (-) input

IN_P2

HiZ

ADC Channel 2 differential positive (+) input

AGND

Ground

Analog Ground

MIC_BIAS

Power

P/D

Analog microphone bias reference voltage output

VREF_BUF

Power

Low Noise reference for on-chip regulator

VREF

Power

Low Noise reference for bandgap circuitry

AVCC

Power

3.3V Supply

PLL_REG

Power

Low Noise reference for PLL regulator

ACLK

HiZ

Main Clock Input

AVDD

Power

3.3V, I/O Supply

DGND

Ground

Digital Core Ground

DVDD

Power

Digital Core Supply. Internally Supplied

DATA_CLK

I/O

HiZ

Serial Clock pin

DATA1

I/O

HiZ

Serial Frame pin

DATA2/GPIO3

I/O

HiZ

Serial Data pin / General GPIO 3

GPIO4

I/O

HiZ

General GPIO 4

GPIO5

I/O

HiZ

General GPIO 5

GPIO6/HW3

I/O

HiZ

General GPIO 6 & HW3 interface pin, controlled by MODE pin

29* Package PAD

Not electrically connected, used for heat dissipation

* Note: AO = Analog Output, I = Digital Input, I/O = Digital Input/Output,

**Note: Res. to Ground = Resistor to ground, see calibration resistor section for more information.

Table 1 – ES9826 28 QFN pin list

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