ES9219C datasheet(48/67 Pages) ESS

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ES9219 Datasheet

February 27, 2020

CONFIDENTIAL ADVANCE INFORMATION 1.0.4

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

1’b1: Disable the internal digital power supply generator.

[1]

SHTOUTb

Disengages the shunt on the output of the amplifier.

1’b0: Shunt on the output of the amplifier is engaged, allowing for protection against clicks while configuring the

amplifier (default).

1’b1: Shunt on the output of the amplifier is disengaged, allowing the amplifier to drive an audio signal.

[0]

SHTINb

Disngages the shunt on the input of the amplifier.

1’b0: Shunt on the input of the amplifier is engaged, allowing for protection against clicks while configuring the

amplifier (default).

1’b1: Shunt on the input of the amplifier is disengaged.

I2C Slave Access:

I2S Sync Slave Access:

Clock Domain:

Bits

[7]

[6]

[5]

[4]

[3]

[2]

[1]

[0]

Mnemonic

ENFCB

ENCP_OE

ENAUX_OE

CPL_ENS

CPL_ENW

SEL3V3_PS

ENSM_PS

SEL3V3_CPH

Bits

Mnemonic

Description

[7]

ENFCB

Enables the fast charge of the analog reference.

1’b0: The analog reference will be charged as quickly as possible (default).

1’b1: The analog reference will be charged at a slower rate.

[6]

ENCP_OE

Allows the digital core to override the charge pump settings.

1’b0: The charge pump settings are controlled via the GPIO2 pin (default).

1’b1: The charge pump settings are controlled via the digital override bits.

[5]

ENAUX_OE

Allows the digital core to override the output switch settings.

1’b0: The output switch is controlled via the GPIO2 pin (default).

1’b1: The output switch is controlled via the enaux register.

[4]

CPL_ENS

Enables the small charge pump and places it into strong mode. The small charge pump powers the pre-amplifier of

the headphone amp.

1’b0: The small charge pump (strong mode) is disabled (default).

1’b1: The small charge pump (strong mode) is enabled.

Note: encp_oe must be set to 1’b1 for the digital core to control the charge pump.

[3]

CPL_ENW

Enables the small charge pump and places it into weak mode. The small charge pump powers the pre-amplifier of

the headphone amp.

1’b0: The small charge pump (weak mode) is disabled (default).

1’b1: The small charge pump (weak mode) is enabled.

Note: encp_oe must be set to 1’b1 for the digital core to control the charge pump.

[2]

SEL3V3_PS

Configures the voltage of the positive power supply of the output stage.

1’b0: Uses 1.8V for the positive power supply of the output stage (default).

1’b1: Uses 3.3V for the positive power supply of the output stage.

[1]

ENSM_PS

Allows for a smooth transition between 1.8V and 3.3V on the positive power supply. This bit should be configured

to 1’b0 immediately before changing the sel3v3_ps bit.

Once sel3v3_ps has been set to the required value, then ensm_ps can be set back to 1’b1 for normal operation.

1’b0: Configure the positive supply for a transition between 1.8V and 3.3V (default).

1’b1: Normal operation.

[0]

SEL3V3_CPH

Configures the voltage of the negative power supply of the output stage.

1’b0: Uses 1.8V for the negative power supply of the output stage (default).

1’b1: Uses 3.3V for the negative power supply of the output stage.

I2C Slave Access:

I2S Sync Slave Access:

Clock Domain:

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