ES9219C datasheet(35/67 Pages) ESS

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ES9219 Datasheet

CONFIDENTIAL ADVANCE INFORMATION 1.0.4

February 27, 2020

ESS TECHNOLOGY, INC. 237 South Hillview Drive, Milpitas, CA 95035, USA Tel (408) 643-8800 • Fax (408) 643-8801

Read-Write Registers

I2C Slave Access:

I2S Sync Slave Access:

Clock Domain:

Bits

[7:4]

[3:2]

[1]

[0]

Mnemonic

Reserved

CLK_GEAR

RESERVED

SOFT_RESET

Bits

Mnemonic

Description

[7:4]

RESERVED

[3:2]

CLK_GEAR

Configures a clock divider network that can reduce the power consumption of the chip by reducing the clock

frequency supplied to both the digital core and analog stages

2’b00: uses MCLK (default)

2’b01: divides MCLK by 2

2’b10: divides MCLK by 4

2’b11: divides MCLK by 8

[1]

RESERVED

[0]

SOFT_RESET

Software configurable hardware reset with the ability to reset the design to its initial power-on configuration

1’b0: normal operation (default)

1’b1: resets the Sabre to its power-on defaults

Note: This register will always read as “1’b0” as the power-on default for this register is “1’b0” A reset can be

verified by checking the status of other modified registers.

I2C Slave Access:

I2S Sync Slave Access:

Clock Domain:

Bits

[7:6]

[5:4]

[3:2]

[1:0]

Mnemonic

SERIAL_LENGTH

SERIAL_MODE

AUTO_SELECT

INPUT_SELECT

Bits

Mnemonic

Description

[7:6]

SERIAL_LENGTH

Selects how many DATA_CLK pulses exist per data word.

2’b00: 16-bit data words

2’b01: 24-bit data words

2’b10: 32-bit data words (default)

2’b11: 32-bit data words

[5:4]

SERIAL_MODE

Configures the type of serial data.

2’b00: I2S mode (default)

2’b01: Left-justified mode

2’b11 or 2’b10: reserved

[3:2]

AUTO_SELECT

Allows the Sabre ES9219 to automatically select between either serial (I2S), or DSD input formats.

2’b00: Disable automatic input decoder and instead use the information provided by register 1[1:0]

2’b01: Automatically select between DSD or serial data

2’b10: Reserved

2’b11: Automatically select between DSD or serial (I2S) data (default)

[1:0]

INPUT_SELECT

Configures the ES9219 to use a particular input decoder if auto_select is disabled.

2’b00: Serial (default)

2’b01: reserved

2’b10: Auto Select

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