ES9038Q2M datasheet(21/65 Pages) ESS

21 / 65 page

July 17, 2019

CONFIDENTIAL Rev. 1.3

ES9038Q2M Datasheet

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

8800 • Fax (408) 643-8801

Bits

[7:5]

[4]

[3]

[2:1]

[0]

Mnemonic

filter_shape

reserved

bypass_osf

reserved

mute

Default

3’b100

1’b0

2’b00

1’b0

Bit

Mnemonic

Description

[7:5]

filter_shape

Selects the type of filter to use during the 8x FIR interpolation phase.

•

3’b111: brick wall filter

•

3’b110: corrected minimum phase fast roll-off filter

•

3’b101: reserved

•

3’b100: apodizing fast roll-off filter (default)

•

3’b011: minimum phase slow roll-off filter

•

3’b010: minimum phase fast roll-off filter

•

3’b001: linear phase slow roll-off filter

•

3’b000: linear phase fast roll-off filter

[4]

reserved

[3]

bypass_osf

Allows the use of an external 8x upsampling filter, bypassing the internal

interpolating FIR filter.

•

1’b0: uses the built-in oversampling filter (default)

•

1’b1: uses an external upsampling filter, which requires data

oversampled by 8x externally

[2:1]

reserved

[0]

mute

Mutes all 2 channels of the Sabre DAC.

•

1’b0: normal operation (default)

•

1’b1: mute both channels

ES9038Q2M Datasheet(PDF) 21 Page - ESS Technology,Inc

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