Document
CS4391A
24-Bit, 192 kHz Stereo DAC with Volume Control
Features
Complete Stereo DAC System: Interpolation, D/A, Output Analog Filtering 108 dB Dynamic Range 94 dB THD+N Direct Stream Digital Mode Low Clock Jitter Sensitivity +5 V Power Supply ATAPI Mixing On-Chip Digital De-emphasis for 32, 44.1, and 48 kHz Volume Control with Soft Ramp
– 119 dB Attenuation – 1 dB Step Size – Zero Crossing Click-Free Transitions
Direct Interface with 5 V to 1.8 V Logic
I
Description
The CS4391A is a complete stereo digital-to-analog system including digital interpolation, fourth-order deltasigma digital-to-analog conversion, digital de-emphasis, volume control, channel mixing and analog filtering. The advantages of this architecture include: ideal differential linearity, no distortion mechanisms due to resistor matching errors, no linearity drift over time and temperature and a high tolerance to clock jitter.
The CS4391A accepts PCM data at sample rates from 4 kHz to 192 kHz, DSD audio data, consumes very little power and operates over a wide power supply range. These features are ideal for DVD, A/V receivers, CD and set-top box systems.
ORDERING INFORMATION
CS4391A-KS 20-pin SOIC
-10 to 70 °C
CS4391A-KZ 20-pin TSSOP
-10 to 70 °C
CS4391A-KZZ 20-pin TSSOP, Lead Free -10 to 70 °C
CDB4391A Evaluation Board
M1 M2 M0 (SDA/CDIN) M3 (SCL/CCLK) (AD0/CS) AMUTEC BMUTEC
CMOUT FILT+
RST
SCLK LRCK SDATA
MODE SELECT (CONTROL PORT)
EXTERNAL MUTE CONTROL
REFERENCE
SERIAL PORT
INTERPOLATION FILTER
INTERPOLATOR FILTER
VOLUME CONTROL
MIXER
VOLUME CONTROL
∆Σ DAC
∆Σ DAC
ANALOG FILTER
ANALOG FILTER
AOUTA+ AOUTA-
AOUTB+ AOUTB-
MCLK
Preliminary Product Information
www.cirrus.com
This document contains information for a new product. Cirrus Logic reserves the right to modify this product without notice.
©Copyright Cirrus Logic, Inc. 2004
(All Rights Reserved)
JUL ‘04 DS600PP3
1
CS4391A
TABLE OF CONTENTS
1. CHARACTERISTICS/SPECIFICATIONS ................................................................................. 5 2. TYPICAL CONNECTION DIAGRAMS ................................................................................... 13 3. REGISTER QUICK REFERENCE .......................................................................................... 15
3.1 Mode Control 1 (address 01h) .......................................................................................... 15 3.2 Volume and Mixing Control (address 02h)........................................................................ 16 3.3 Channel A Volume Control (address 03h) ........................................................................ 16 3.4 Channel B Volume Control (address 04h) ........................................................................ 16 3.5 Mode Control 2 (address 05h) .......................................................................................... 17 4. REGISTER DESCRIPTION .................................................................................................... 18 4.1 Mode Control 1 - Address 01h .......................................................................................... 18
4.1.1 Auto-Mute (Bit 7) ................................................................................................. 18 4.1.2 Digital Interface Formats (Bits 6:4) ...................................................................... 18 4.1.3 De-Emphasis Control (Bits 3:2) ........................................................................... 18 4.1.4 Functional Mode (Bits 1:0) .................................................................................. 18 4.2 Volume and Mixing Control (Address 02h) ....................................................................... 19 4.2.1 Channel A Volume = Channel B Volume (Bit 7) ................................................. 19 4.2.2 Soft Ramp or Zero Cross Enable (Bits 6:5) ......................................................... 19 4.2.3 ATAPI Channel Mixing and Muting (Bits 4:0) ...................................................... 19 4.3 Channel A Volume Control - Address 03h ........................................................................ 19 4.4 Channel B Volume Control - Address 04h ....................................................................... 20 4.4.1 Mute (Bit 7) .......................................................................................................... 20 4.4.2 Volume Control (Bits 6:0) .................................................................................... 20 4.5 Mode Control 2 - Address 05h .......................................................................................... 20 4.5.1 Invert Signal Polarity (Bits 7:6) ............................................................................ 20 4.5.2 Control Port Enable (Bit 5) .................................................................................. 20 4.5.3 Power Down (Bit 4) ..............................................................