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ES9080 데이터시트(PDF) 10 Page - ESS Technology,Inc

부품명 ES9080
상세설명  32-bit High-Performance 8-Channel DAC
PDF  146 Pages
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제조업체  ESS [ESS Technology,Inc]
홈페이지  http://www.esstech.com
Logo ESS - ESS Technology,Inc

ES9080 데이터시트(HTML) 10 Page - ESS Technology,Inc

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CONFIDENTIAL ADVANCE INFORMATION 0.4.3
ES9080 Product Datasheet
ESS TECHNOLOGY, INC. 109 Bonaventura Drive, San Jose, CA 95134, USA Tel (408) 643-8800 WWW.ESSTECH.COM
10
Digital Features
Digital Signal Path
SABRE DAC DIGITAL PATH (8 CHANNEL)
De-emphasis
Filter
8x
Oversampling
Filter
Volume
Control &
Automute
16x IIR
Filter
DRE
Noise Shaped
Modulators
THD
Compensation
TDM/I2S
DSD/DoP
SPDIF
OUT
SPDIF Out 1
SPDIF Out 2
Figure 3 - Digital signal path
De-emphasis Filter
The De-emphasis filters are only applicable to channels 1 & 2 only.
The de-emphasis filters can be enabled or bypassed through the BYPASS_DEEMPH registers. The filters are configured for a 48kHz FS by default,
however this can be changed via the SEL_DEEMPH register.
De-emphasis Filter Configuration Registers
•
Register 108[6]: BYPASS_DEEMPH
•
Register 108[4:3]: SEL_DEEMPH
Volume Control
This volume control is intended for use during audio playback. Each channel can be digitally attenuated from 0dB to –127.5dB. When a new volume
level is set, the attenuation circuit will ramp softly to the new level at a rate specified in the DAC VOL UP RATE, DAC VOL DOWN RATE and DAC
VOL DOWN RATE FAST registers.
By default, channel volumes are updated as soon as the volume registers are written. However, the volume control can only be changed once the
RUN_VOLUME bit is toggled. This feature can be enabled or disabled through the FORCE_VOLUME bit
Each output channel has an independent volume control. The attenuation for each channel can be independent or synchronized in pairs by setting
the DAC_USE_MONO_VOLUME bit.
Volume Control Registers
•
Registers 94-101: VOLUMEx
•
Register 102: DAC VOL UP RATE
•
Register 103: DAC VOL DOWN RATE
•
Register 104: DAC VOL DOWN RATE FAST
•
Register 105[4]: RUN_VOLUME
•
Register 105[6]: FORCE_VOLUME
•
Register 105[5]: DAC_USE_MONO_VOLUME



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