ES9218PC datasheet(60/101 Pages) ESS

Part #	ES9218PC

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

PDF	101 Pages

Scroll/Zoom	100%

Manufacturer	ESS [ESS Technology,Inc]

Direct Link	http://www.esstech.com

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60 / 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

[7:0]

Mnemonic

cp_ss_delay

Default

8’d98

Bit

Mnemonic

Description

[7:0]

cp_ss_delay

Configures the delay between the weak charge pump enable and the strong charge pump enable. This

delay is to limit the inrush currents of the strong charge pump when powering up.

This relationship is not exact because chargepump clock frequency is not guaranteed to be exactly equal

to XI(MCLK). It is automatically adjusted to undo the effects of clock gearing. The result is that the

chargepump clock rate remains constant with respect to XI(MCLK) even when CLK changes but only to

within the truncation error of the chargepump clock divider.

delay(s) ≈

256 ∗ cp_ss_delay

fMCLK

Example: For the default register setting if XI(MCLK) = 25MHz, delay ≈ 1ms.

See System Clock XI(MCLK) for the relationship between XI(MCLK) and CLK.

ES9218PC Datasheet(PDF) 60 Page - ESS Technology,Inc