ES9018 datasheet(27/54 Pages) ESS

27 / 54 page

2.3

ESS TECHNOLOGY, INC. 109 Bonaventura Drive, San Jose, CA 95134, USA Tel (408) 643-8800 WWW.ESSTECH.COM

COM

ES9018S Product Datasheet

Bits

[7]

[6]

[5]

[4]

[3]

[2]

[1]

[0]

Default

1'b0

1'b1

1'b0

Bits

Mnemonic

Description

[7]

MONO_CH_SEL

Channel select when ALL_MONO mode is enabled.

•

1'b1: Use the right channel when ALL_MONO mode is

enabled

•

1'b0: Use the left channel when ALL_MONO mode is

enabled

[6]

OSF_BYPASS

Polarity control for DAC 7.

•

1'b0: Use the OSF filter (normal operation)

•

1'b1: Send data directly from the I2S receiver to the

IIR filter at 8x.

Note: Setting to 1 will cause the signal to bypass the FIR

filters as well as the de-emphasis… filter but will still apply to

the volume controls.

[5]

DPLL_LOCK_RST_REG

DPLL_LOCK manual override.

•

1'b0: Normal Operation

•

1'b1: Manually override the DPLL_LOCK. This will

force the Jitter Eliminator to relock the signal.

[4]

AUTO_DEEMPH

SPDIF automatic de-emphasis control.

•

1'b0: De-emphasis filter is not automatically applied

•

1'b1: De-emphasis in SPDIF mode is automatically

applied with the correct frequency if 44.1k/48k/32k are

detected in the SPDIF channel status bits.

[3]

SPDIF_AUTODETECT

Automatic SPDIF input detection control.

•

1'b0: Must manually select SPDIF input.

•

1'b1: Automatically detect SPDIF input

Note: This should only be set if I2S data will not be applied to

the pins

[2]

FIR_LENGTH

2nd stage FIR filter coefficient length control.

•

1'b1: 2nd stage FIR filter is 28 coefficients in length

•

1'b0: 2nd stage FIR filter is 27 coefficients in length

[1]

FIN_PHASE_FLIP

DPLL phase invert

•

1'b0: Do not invert the phase to the DPLL

•

1'b1: Invert the phase to the DPLL

[0]

ALL_MONO

Overall DAC true mono source enable.

•

1'b0: Normal 8 channel mode

•

1'b1: All 8 DACs are sourced from one source for true

mono.

Note: The channel to use as the source is selected by the

MONO_CH_SELECT register.

ES9018 Datasheet(PDF) 27 Page - ESS Technology,Inc

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