ES9826 datasheet(10/88 Pages) ESS

10 / 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

Configuration Modes

The ES9826 has options for hardware or software modes. They are controlled by the state of the MODE (pin 5):

MODE PIN

Configuration

Software mode - I2C interface

Pull Low

Hardware mode (see Hardware Mode Table, Table 9)

Pull High

Hardware mode (see Hardware Mode Table, Table 9)

Software mode - SPI interface

Table 2 - Mode pin configuration options

Software Mode

ES9826 supports I2C or SPI serial communication to configure registers.

I2C

MODE (Pin 5) – ‘0’ – GND.

Connect per I2C standard.

▪

SDA (Pin 4)

▪

SCL (Pin 3)

▪

ADDR0 (Pin 1)

▪

ADDR1 (Pin 2)

Table 3 – I2C addresses

SPI

Mode (Pin 5) – ‘1’ – AVDD.

Connect per SPI standard.

▪

MOSI (Pin 4)

▪

SCLK (Pin 3)

▪

SS (Pin 2)

▪

MISO (Pin 1)

Table 4 - SPI commands

See

I2C Slave Interface Timing or SPI Slave Interface for details.

I2C Address

I2C Synchronous

Address (PLL registers)

ADDR1 ADDR0

0x40

0x48

GND

0x42

0x4A

GND

AVDD

0x44

0x4C

AVDD

GND

0x46

0x4E

AVDD

SPI command

First byte

PLL

Write

Read

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