ES9219C datasheet(49/67 Pages) ESS

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ES9219 Datasheet

CONFIDENTIAL ADVANCE INFORMATION 1.0.4

February 27, 2020

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

Bits

[7]

[6]

[5:4]

[3]

[2]

[1:0]

Mnemonic

RESERVED

ENHPA_OUT

RESERVED

HPA_HIQ

ENABLE_SEPARATE_THD_COMP

RESERVED

Bits

Mnemonic

Description

[7]

RESERVED

[6]

ENHPA_OUT

Enable the headphone amplifier output stage, active high.

1’b0: Disable the headphone output stage (default).

1’b1: Enable the headphone output stage.

Note: To reduce clicks/pops during power sequencing ENHPA_OUT should be delayed

at least 100us after issuing the ENHPA signal.

[5:4]

RESERVED

[3]

HPA_HIQ

Selects the quiescent current of the headphone amp. This may be useful for adjusting

the crossover distortion between the left and right channel.

1’b0: Low output quiescent current (default).

1’b1: High output quiescent current.

[2]

ENABLE_SEPARATE_THD_COMP

Selects which bank of THD coefficients to use for channel 2 compensation.

1’b0: One set of coefficients (registers 22-25) are used for both channel 1 and channel

2 (default).

1’b1: A separate set of coefficients (registers 53-56) are used for channel 2.

[1:0]

RESERVED

I2C Slave Access:

I2S Sync Slave Access:

Clock Domain:

Bits

[23:12]

[11:0]

Mnemonic

CLK_GEAR_MAX_THRESH

CLK_GEAR_MIN_THRESH

Bits

Mnemonic

Description

[23:12]

CLK_GEAR_MAX_THRESH

Selects the maximum number of MCLK/2 pulses per 1fs that must be counted before the

clock gear is automatically increased (MCLK is slowed down).

[11:0]

CLK_GEAR_MIN_THRESH

Selects the minimum number of MCLK/2 pulses per 1fs that must be counted before the clock

gear is automatically decreased (MCLK is sped up).

This value should always be 98 or larger so that the minimum MCLK oversampling factor is

achieved.

I2C Slave Access:

I2S Sync Slave Access:

Clock Domain:

Bits

[15:0]

Mnemonic

THD_COMP_C2_Ch2

Bits

Mnemonic

Description

[15:0]

THD_COMP_C2_Ch2

A 16-bit signed coefficient for correcting for the second harmonic distortion. Used only in the channel 2

THD compensation block when enable_seperate_thd_comp is selected.

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