Cirrus Logic CS4384 - Manual

Copyright
© Cirrus Logic, Inc. 2008
(All Rights Reserved)
http://www.cirrus.com
103 dB, 192 kHz 8-Channel D/A Converter
Features
 Advanced Multi-bit Delta Sigma Architecture
 24-bit Conversion
 Automatic Detection of Sample Rates up to
192 kHz
 103 dB Dynamic Range
 -88 dB THD+N
 Single-Ended Output Architecture
 Direct Stream Digital ® (DSD ™) Mode
– Non-Decimating Volume Control
– On-Chip 50 kHz Filter
– Matched PCM and DSD Analog Output
Levels
 Compatible with Industry-Standard Time
Division Multiplexed (TDM) Serial Interface
 Selectable Digital Filters
 Volume Control with 1/2-dB Step Size and Soft
Ramp
 Low Clock-Jitter Sensitivity
 +5 V Analog Supply, +2.5 V Digital Supply
 Separate 1.8 to 5 V Logic Supplies for the
Control and Serial Ports
Description
The CS4384 is a complete 8-channel digital-to-analog
system. This D/A system includes digital de-emphasis,
half-dB step size volume control, ATAPI channel mix-
ing, selectable fast and slow digital interpolation filters
followed by an oversampled, multi-bit delta sigma mod-
ulator which includes mismatch shaping technology that
eliminates distortion due to capacitor mismatch. Follow-
ing this stage is a multi-element switched capacitor
stage and low-pass filter with single-ended analog
outputs.
The CS4384 also has a proprietary DSD processor
which allows for volume control and 50 kHz on-chip fil-
tering without an intermediate decimation stage. It also
offers an optional path for direct DSD conversion by di-
rectly using the multi-element switched capacitor array.
The CS4384 accepts PCM data at sample rates from
4 kHz to 216 kHz, DSD audio data, and delivers excel-
lent sound quality. These features are ideal for multi-
channel audio systems including SACD players, A/V re-
ceivers, digital TV’s, mixing consoles, effects
processors, and sound cards.
This product is available in 48-pin LQFP package in
Commercial (-40°C to +85°C) temperature grade. See
“Ordering Information” on page 51 for complete details.
C ontrol Port Supply = 1.8 V to 5 V
Register/Hardware
C onfiguration
Internal Voltage
Reference
Reset
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TDM Serial
A udio Input
Digital Supply = 2.5 V
Hardw are Mode or
I 2 C /SPI Softw are Mode
C ontrol Data
A nalog Supply = 5 V
E ight C hannels
of Single-E nded
O utputs
8
PC M Serial
A udio Input
Volume
C ontrols
Digital
F ilters
Switch-C ap
DAC and
Analog F ilters
Multi-bit ∆Σ
Modulators
DSD A udio
Input
DSD Processor
-Volume control
-50 kHz filter E xternal Mute
C ontrol
Mute Signals
2
8
Serial A udio Port
Supply = 1.8 V to 5 V
CS4384
MAY '08
DS620F1