ES9218PC datasheet(40/101 Pages) ESS

40 / 101 page

ES9218P Datasheet

December 6, 2018

CONFIDENTIAL ADVANCE INFORMATION 1.8

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

Bits

[7:6]

[5:4]

[3:2]

[1:0]

Mnemonic

serial_length

serial_mode

auto_select

input_select

Default

2’b10

2’b00

2’b11

2’b00

Bit

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: right-justified mode

[3:2]

auto_select

Allows the ES9218P to automatically select between either serial (I2S), or DSD input formats.

•

2’b00: disable automatic input decoder and instead use the information provided by

•

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 ES9218P to use a particular input decoder if auto_select is disabled.

•

2’b00: serial (default)

•

2’b01: DSD

•

2’b10: auto select

•

2’b11: auto select

Note: Register 1[3:2] must be set to 2’b00 for input_select to function.

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