ES9218PC datasheet(15/101 Pages) ESS

15 / 101 page

ES9218P Datasheet

CONFIDENTIAL ADVANCE INFORMATION 1.8

December 6, 2018

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

Standby Mode

For lowest power consumption, the following should be performed to enter stand-by mode:

Shut down the amplifier portion of the chip with Register 32: Amplifier Configuration (0x20)

1. Pull RESETB low. This will:

a. Shut off the DACs, oscillator and internal regulators.

b. Force all digital I/O pins into tri-state mode

2. If XI is supplied externally, it should be stopped at a logic low level

3. Disable any power supplies connected to the chip

To resume from standby mode:

1. Enable all power supplies

2. Pull RESETB up

3. Reinitialize all registers

To resume from standby mode, bring RESETB to a logic-high and reinitialize all registers.

OPERATION Mode

RESETB

GPIO2

HiFi Mode

(DAC & HPA: ON, AUX SW: OFF)

AUX Mode

(DAC & HPA: OFF, AUX SW: ON)

Standby(Shutdown) Mode

(DAC, HPA, AUX SW: OFF)

DVDD Supply

The ES9218P is equipped with a regulated DVDD supply powered from AVDD. The internal DVDD regulator should be decoupled to DGND with a

capacitor that maintains a minimum value of 1

F at 1.2V over the target operating temperature range.

ES9218PC Datasheet(PDF) 15 Page - ESS Technology,Inc