ES9218PC datasheet(68/101 Pages) ESS

部件名	ES9218PC

功能描述	32-bit Stereo Low Power DAC with Headphone Amplifier, Analog Volume Control, and Output Switch

PDF	101 Pages

Scroll/Zoom	100%

制造商	ESS [ESS Technology,Inc]

网页	http://www.esstech.com

标志

68 / 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

[31:0]

Mnemonic

nco_num

Default

32’d0

Bit

Mnemonic

Description

[31:0]

nco_num

The Numerically Controlled Oscillator (NCO) is an unsigned 32-bit quantity that defines the ratio between

CLK and FSR.

•

32’d0: disables NCO mode (default)

•

32’d#: enables NCO mode

The NCO number is related to FSR and CLK by the following equation:

FSR (raw sample rate) =

(nco_num ∗ CLK)

232

This feature is most commonly used to generate arbitrary DATA_CLK frequencies in master mode. See

Master Mode for more details. NCO mode also supports synchronous operation in slave mode with

a programmable CLK/FSR ratio as long as the following condition is true:

CLK

FSR

> 128

Contact your local FAE regarding DoP master mode support using NCO mode.

ES9218PC 数据表(PDF) 68 Page - ESS Technology,Inc