CS4364 103 dB, 192 kHz 6-Channel D/A Converter Features Description Advanced Multi-bit Delta Sigma Architecture The CS4364 is a complete 6-channel digital-to-analog system. This D/A system includes digital de-emphasis, 24-bit Conversion half-dB step size volume control, ATAPI channel mix- Automatic Detection of Sample Rates up to ing, selectable fast and slow digital interpolation filters 192 kHz followed by an oversampled, multi-bit delta sigma mod- 103 dB Dynamic Range ulator which includes mismatch shaping technology that eliminates distortion due to capacitor mismatch. Follow- -88 dB THD+N ing this stage is a multi-element switched capacitor Single-Ended Output Architecture stage and low-pass filter with single-ended analog ) Direct Stream Digital (DSD Mode outputs. Non-Decimating Volume Control The CS4364 also has a proprietary DSD processor On-Chip 50 kHz Filter which allows for volume control and 50 kHz on-chip fil- tering without an intermediate decimation stage. It also Matched PCM and DSD Analog Output offers an optional path for direct DSD conversion by di- Levels rectly using the multi-element switched capacitor array. Selectable Digital Filters The CS4364 accepts PCM data at sample rates from Volume Control with 1/2-dB Step Size and Soft 4 kHz to 216 kHz, DSD audio data, and delivers excel- Ramp lent sound quality. These features are ideal for multi- Low Clock-Jitter Sensitivity channel audio systems including SACD players, A/V re- +5 V Analog Supply, +2.5 V Digital Supply ceivers, digital TVs, mixing consoles, effects processors, and sound cards. Separate 1.8 to 5 V Logic Supplies for the Control and Serial Ports This product is available in 48-pin LQFP package in Commercial (-40C to +85C) temperature grade. See Ordering Information on page 49 for complete details. Control Port Supply = 1.8 V to 5 V Digital Supply = 2.5 V Analog Supply = 5 V Hardware Mode or 2 I C/SPI Software Mode Control Data Internal Voltage Register/Hardware Reference Configuration Reset Serial Audio Port Supply = 1.8 V to 5 V Six Channels of Switch-Cap Volume Digital Multi-bit Single-Ended DAC and 6 Controls Filters Modulators 6 Outputs Analog Filters PCM Serial Audio Input DSD Audio External Mute DSD Processor Input Mute Signals Control -Volume control 6 -50 kHz filter Copyright Cirrus Logic, Inc. 2008 MAY 08 (All Rights Reserved) CS4364 TABLE OF CONTENTS 1. PIN DESCRIPTION................................................................................................................................. 6 2. CHARACTERISTICS AND SPECIFICATIONS...................................................................................... 8 RECOMMENDED OPERATING CONDITIONS .......................................................................................... 8 ABSOLUTE MAXIMUM RATINGS............................................................................................................... 8 DAC ANALOG CHARACTERISTICS........................................................................................................... 9 POWER AND THERMAL CHARACTERISTICS........................................................................................ 10 COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE............................................ 11 COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE............................................ 12 DSD COMBINED DIGITAL & ON-CHIP ANALOG FILTER RESPONSE .................................................. 12 DIGITAL CHARACTERISTICS .................................................................................................................. 13 SWITCHING CHARACTERISTICS - PCM ................................................................................................ 14 SWITCHING CHARACTERISTICS - DSD.................................................................................................15 SWITCHING CHARACTERISTICS - CONTROL PORT - IC FORMAT.................................................... 16 SWITCHING CHARACTERISTICS - CONTROL PORT - SPI FORMAT................................................... 17 3. TYPICAL CONNECTION DIAGRAM .............................................................................................. 18 4. APPLICATIONS ................................................................................................................................... 20 4.1 Master Clock.................................................................................................................................. 20 4.2 Mode Select.................................................................................................................................. 21 4.3 Digital Interface Formats ............................................................................................................... 22 4.3.1 OLM 1 ................................................................................................................................ 23 4.3.2 OLM 2 ................................................................................................................................ 23 4.4 Oversampling Modes..................................................................................................................... 23 4.5 Interpolation Filter.......................................................................................................................... 24 4.6 De-Emphasis ................................................................................................................................. 24 4.7 ATAPI Specification....................................................................................................................... 25 4.8 Direct Stream Digital (DSD) Mode................................................................................................. 25 4.9 Grounding and Power Supply Arrangements ................................................................................ 26 4.9.1 Capacitor Placement............................................................................................................ 26 4.10 Analog Output and Filtering......................................................................................................... 26 4.11 The MUTEC Outputs ................................................................................................................... 27 4.12 Recommended Power-Up Sequence .......................................................................................... 28 4.12.1 Hardware Mode.................................................................................................................. 28 4.12.2 Software Mode ................................................................................................................... 28 4.13 Recommended Procedure for Switching Operational Modes...................................................... 29 4.14 Control Port Interface .................................................................................................................. 29 4.14.1 MAP Auto Increment .......................................................................................................... 29 4.14.2 IC Mode ............................................................................................................................ 29 4.14.3 SPI Mode ........................................................................................................................... 30 4.15 Memory Address Pointer (MAP)................................................................................................. 31 4.15.1 INCR (Auto Map Increment Enable) .................................................................................. 31 4.15.2 MAP4-0 (Memory Address Pointer) ................................................................................... 31 5. REGISTER QUICK REFERENCE ....................................................................................................... 32 6. REGISTER DESCRIPTION .................................................................................................................. 33 6.1 Chip Revision (Address 01h)......................................................................................................... 33 6.1.1 Part Number ID (PART) Read Only ................................................................................... 33 6.1.2 Revision ID (REV) Read Only ............................................................................................ 33 6.2 Mode Control 1 (Address 02h) ...................................................................................................... 33 6.2.1 Control Port Enable (CPEN) ................................................................................................33 6.2.2 Freeze Controls (FREEZE) ..................................................................................................33 6.2.3 PCM/DSD Selection (DSD/PCM)......................................................................................... 34 6.2.4 DAC Pair Disable (DACx DIS) ............................................................................................ 34 6.2.5 Power Down (PDN).............................................................................................................. 34 2 DS619F1