ES9219C datasheet(36/67 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

2’b11: DSD

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

I2C Slave Access:

I2S Sync Slave Access:

Clock Domain:

Bits

[7:6]

[5]

[4]

[3:2]

[1:0]

Mnemonic

AUTOMUTE_CONFIG

ANALOG_AUTOMUTE

AUTOMUTE_TIMER_FAST

CH2_MIX_SEL

CH1_MIX_SEL

Bits

Mnemonic

Description

[7:6]

AUTOMUTE_CONFIG

Configures the automute state machine, which allows the Sabre to perform different power saving

and sound optimizations.

2’b00: Normal operation (default).

2’b01: Perform a mute when an automute condition is asserted.

2’b10: Ramp all channels to ground when an automute condition is asserted.

2’b11: Perform a mute and then ramp all channels to ground when an automute condition is

asserted.

Note: Ramping DAC outputs to ground can reduce the power consumption of the Sabre in some

situations.

Note: This process can be sped up by using the automute_time, volume_rate and soft_start_rate

registers.

[5]

ANALOG_AUTOMUTE

Allows the analog volume control to be driven to -22dB when an automute condition occurs.

1’b0: Analog volume control is left ‘as programmed’ when an automute occurs.

1’b1: Analog volume control is pushed to -22dB when an automute occurs (default).

[4]

AUTOMUTE_TIMER_FAST

If disabled, the automute time is multiplied by 8, resulting in a longer delay before an automute

event is triggered.

1’b0: Automute time is calculated by the regular formula (see automute_time) multiplied by 8.

1’b1: Automute time is calculated by the regular formula (default).

[3:2]

CH2_MIX_SEL

Selects which data is mapped to DAC 2.

2’b00: ch1

2’b01: ch2 (default)

2’b10-2’b11: reserved

[1:0]

CH1_MIX_SEL

Selects which data is mapped to DAC 1.

2’b00: ch1 (default)

2’b01: ch2

2’b10-2’b11: reserved

I2C Slave Access:

I2S Sync Slave Access:

Clock Domain:

Bits

[7:5]

[4:0]

Mnemonic

RESERVED

ANALOG_VOLUME_MAIN

Bits

Mnemonic

Description

[7:5]

RESERVED

[4:0]

ANALOG_VOLUME_MAIN

This register controls the analog volume which ranges from +2dB to -22dB in 2dB steps

This register is only valid from 5’d0 to 5’d24. 1dB steps can be enabled via analog_1db_en.

By default, this register controls both channel 1 and channel 2 analog volume controls.

However, it is possible to enable independent analog volume control via analog_use_secondary.

Note: This feature is only active when in HiFi mode.

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