CS4382A 114 dB, 192 kHz 8-Channel D/A Converter Features Description The CS4382A is a complete 8-channel digital-to-analog Advanced Multi-bit Delta Sigma Architecture system. This D/A system includes digital de-emphasis, 1 dB step size volume control, ATAPI channel mixing, 24-bit Conversion selectable fast and slow digital interpolation filters fol- lowed by an oversampled, multi-bit delta-sigma Up to 192 kHz Sample Rates modulator which includes mismatch shaping technolo- gy that eliminates distortion due to capacitor mismatch. 114 dB Dynamic Range Following this stage is a multi-element switched capac- -100 dB THD+N itor stage and low-pass filter with differential analog outputs. Direct Stream Digital (DSD) Mode The CS4382A also has a proprietary DSD processor which allows for 50 kHz on-chip filtering without an in- On-chip 50 kHz Filter termediate decimation stage. The CS4382A is available in a 48-pin LQFP package in both Commercial (-40C to Matched PCM and DSD Analog Output Levels +85C) and Automotive grades (-40C to +105C). The CDB4382A Customer Demonstration board is also Selectable Digital Filters available for device evaluation and implementation sug- gestions. Please see Ordering Information on page 48 Volume Control with 1 dB Step Size and Soft for complete details. Ramp The CS4382A accepts PCM data at sample rates from Low Clock-jitter Sensitivity 4 kHz to 216 kHz, DSD audio data, and delivers excel- lent sound quality. These features are ideal for multi- +5 V Analog Supply, +2.5 V Digital Supply channel audio systems including SACD players, A/V re- ceivers, digital TVs, mixing consoles, effects Separate 1.8 to 5 V Logic Supplies for the processors, sound cards, and automotive audio Control & Serial Ports systems. C ontrol & Serial Audio Port Digital Supply = 2.5 V Analog Supply = 5 V Supplies = 1.8 V to 5 V Hardw are Mode or 2 I C /SPI Software Mode Control Data Internal Voltage Register/Hardware Reference C onfiguration Reset Switch-Cap 8 Differential PC M Serial Volume Digital Multi-bit DAC and Audio Input Outputs 8 Controls F ilters Modulators Analog F ilters 8 E xternal Mute Mute Signals DSD A udio DSD Processor Control 2 -50 kHz filter Input Copyright Cirrus Logic, Inc. 2009 JAN 09 (All Rights Reserved) CS4382A TABLE OF CONTENTS 1. PIN DESCRIPTION ................................................................................................................................. 6 2. CHARACTERISTICS AND SPECIFICATIONS ...................................................................................... 8 RECOMMENDED OPERATING CONDITIONS .................................................................................... 8 ABSOLUTE MAXIMUM RATINGS ........................................................................................................ 8 DAC ANALOG CHARACTERISTICS - COMMERCIAL (-CQZ) ............................................................. 9 DAC ANALOG CHARACTERISTICS - AUTOMOTIVE (-DQZ) ........................................................... 10 POWER AND THERMAL CHARACTERISTICS .................................................................................. 11 COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE ...................................... 12 COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE ...................................... 13 DSD COMBINED DIGITAL & ON-CHIP ANALOG FILTER RESPONSE ............................................ 13 DIGITAL CHARACTERISTICS ............................................................................................................ 14 SWITCHING CHARACTERISTICS - PCM .......................................................................................... 15 SWITCHING CHARACTERISTICS - DSD ........................................................................................... 16 SWITCHING CHARACTERISTICS - CONTROL PORT - IC FORMAT ............................................. 17 SWITCHING CHARACTERISTICS - CONTROL PORT - SPI FORMAT ............................................ 18 3. TYPICAL CONNECTION DIAGRAM .................................................................................................. 19 4. APPLICATIONS ................................................................................................................................... 21 4.1 Master Clock .................................................................................................................................. 21 4.2 Mode Select ................................................................................................................................... 21 4.3 Digital Interface Formats ................................................................................................................ 23 4.4 Oversampling Modes ..................................................................................................................... 24 4.5 Interpolation Filter .......................................................................................................................... 24 4.6 De-emphasis .................................................................................................................................. 24 4.7 ATAPI Specification ....................................................................................................................... 25 4.8 Direct Stream Digital (DSD) Mode ................................................................................................. 26 4.9 Grounding and Power Supply Arrangements ................................................................................26 4.9.1 Capacitor Placement ............................................................................................................. 26 4.10 Analog Output and Filtering ......................................................................................................... 26 4.11 Mute Control ................................................................................................................................ 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 4.14.2.1 IC Write ................................................................................................................... 29 4.14.2.2 IC Read .................................................................................................................. 30 4.14.3 SPI Mode ............................................................................................................................. 30 4.14.3.1 SPI Write .................................................................................................................. 30 4.15 Memory Address Pointer (MAP) ................................................................................................. 31 4.16 INCR (Auto Map Increment Enable) ............................................................................................ 31 4.16.1 MAP4-0 (Memory Address Pointer) .................................................................................... 31 5. REGISTER QUICK REFERENCE ........................................................................................................ 32 6. REGISTER DESCRIPTION .................................................................................................................. 33 6.1 Mode Control 1 (Address 01h) ....................................................................................................... 33 6.1.1 Control Port Enable (CPEN) .................................................................................................. 33 6.1.2 Freeze Controls (FREEZE) ................................................................................................... 33 6.1.3 Master Clock Divide Enable (MCLKDIV) ............................................................................... 33 6.1.4 DAC Pair Disable (DACx DIS) ..............................................................................................33 6.1.5 Power Down (PDN) ............................................................................................................... 34 6.2 Mode Control 2 (Address 02h) ....................................................................................................... 34 2 DS618F2