CS4382_08

CS4382 114 dB, 192 kHz 8-Channel D/A Converter Features 24-bit Conversion Up to 192 kHz Sample Rates 114 dB Dynamic Range -100 dB THD+N Supports PCM and DSD Data Formats Selectable Digital Filters Volume Control with Soft Ramp – 1 dB Step Size – Zero Crossing Click-Free Transitions Dedicated DSD Inputs Low Clock-Jitter Sensitivity Simultaneous Support for Two Synchronous Sample Rates for DVD Audio μC or Stand-Alone Operation I D S D _ S C L K (M 3 ) S C L /C C L K (M 1 ) S D A /C D IN (M 2 ) A D 0 /C S (M 0 ) V L C Description The CS4382 is a complete 8-channel digital-to-analog system including digital interpolation, fifth-order deltasigma digital-to-analog conversion, digital de-emphasis, volume control 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 CS4382 is available in a 48-pin LQFP package in Commercial grade (-10°C to +70°C). The CDB4382 Customer Demonstration Board is also available for device evaluation and implementation suggestions. Please see “Ordering Information” on page 42 for complete details. The CS4382 accepts PCM data at sample rates from 4 kHz to 192 kHz, DSD audio data, and operates over a wide power supply range. These features are ideal for multi-channel audio systems including DVD players, SACD players, A/V receivers, digital TV’s, mixing consoles, effects processors, and automotive audio systems. M UTEC1 M U TEC234 RST C o n tro l P o rt(S ta n d -A lo n e M o d e S e le c t) E xte rn a l M u te C o n tr o l ΔΣ V LS S C LK1 V o lu m e C o n t ro l I n t e r p o l a t i o n F i lt e r D AC A n a lo g F i lt e r A O U T A 1+ A O U T A1- M ixer L RC K1 S CLK 2 L RCK2 S e ri a l P o r t V o lu m e C o n tr o l I n t e r p o l a t i o n F i lt e r ΔΣ DAC A n a lo g F i lt e r A O U T B 1+ A O U T B1A O U T A 2+ A O U T A2A O U T B 2+ A O U T B2A O U T A 3+ A O U T A3- V o lu m e C o n tr o l I n t e r p o l a t i o n F i lt e r ΔΣ DAC A n a lo g F i lt e r SD IN1 SD I N2 SD I N3 SD IN4 M ixer V o lu m e C o n tr o l I n t e r p o l a t i o n F i lt e r ΔΣ DAC A n a lo g F i lt e r V o lu m e C o n tr o l M ixer V o lu m e C o n tr o l I n t e r p o l a t i o n F i lt e r ΔΣ DAC A n a lo g F i lt e r I n t e r p o l a t i o n F i lt e r ΔΣ DAC A n a lo g F i lt e r A O U T B 3+ A O U T B3- M C LK V o lu m e C o n tr o l I n t e r p o l a t i o n F i lt e r ΔΣ DAC A n a lo g F i lt e r A O U T A 4+ A O U T A4A O U T B 4+ A O U T B4- ÷2 D SDxx M ixer V o lu m e C o n tr o l 8 I n t e r p o l a t i o n F i lt e r ΔΣ DAC A n a lo g F i lt e r VQ F IL T + VD GND GND VA http://www.cirrus.com Copyright © Cirrus Logic, Inc. 2008 (All Rights Reserved) FEB '08 DS514F2 CS4382 TABLE OF CONTENTS 1. CHARACTERISTICS AND SPECIFICATIONS ..................................................................................... 5 ANALOG CHARACTERISTICS............................................................................................................. 5 ANALOG CHARACTERISTICS............................................................................................................. 6 POWER AND THERMAL CHARACTERISTICS ................................................................................... 6 ANALOG FILTER RESPONSE ............................................................................................................. 7 DIGITAL CHARACTERISTICS.............................................................................................................. 8 ABSOLUTE MAXIMUM RATINGS ........................................................................................................ 8 RECOMMENDED OPERATING CONDITIONS .................................................................................... 8 SWITCHING CHARACTERISTICS ....................................................................................................... 9 DSD - SWITCHING CHARACTERISTICS .......................................................................................... 10 SWITCHING CHARACTERISTICS - CONTROL PORT - I²C® FORMAT ........................................... 11 SWITCHING CHARACTERISTICS - CONTROL PORT - SPI™ FORMAT......................................... 12 2. TYPICAL CONNECTION DIAGRAM ............................................................................................... 13 3. REGISTER QUICK REFERENCE ....................................................................................................... 15 4. REGISTER DESCRIPTION ................................................................................................................. 16 4.1 Mode Control 1 (Address 01h) ..................................................................................................... 16 4.1.1 Control Port Enable (CPEN) ............................................................................................ 16 4.1.2 Freeze Controls (FREEZE) .............................................................................................. 16 4.1.3 Master Clock Divide Enable (MCLKDIV) ......................................................................... 16 4.1.4 DAC Pair Disable (DACx_DIS) ........................................................................................ 16 4.1.5 Power Down (PDN) .......................................................................................................... 17 4.2 Mode Control 2 (Address 02h) .................................................................................................... 17 4.2.1 Digital Interface Format (DIF) .......................................................................................... 17 4.2.2 Serial Audio Data Clock Source (SDINXCLK) ................................................................. 18 4.3 Mode Control 3 (Address 03h) .................................................................................................... 18 4.3.1 Soft Ramp and Zero Cross Control (SZC) ....................................................................... 18 4.3.2 Single Volume Control (SNGLVOL) ................................................................................. 19 4.3.3 Soft Volume Ramp-Up After Error (RMP_UP) ................................................................. 19 4.3.4 Mutec Polarity (MUTEC+/-) .............................................................................................. 19 4.3.5 Auto-Mute (AMUTE) ........................................................................................................ 20 4.3.6 Mutec Pin Control (MUTEC) ............................................................................................ 20 4.4 Filter Control (Address 04h) ........................................................................................................ 20 4.4.1 Interpolation Filter Select (FILT_SEL) .............................................................................. 20 4.4.2 De-Emphasis Control (DEM) ........................................................................................... 20 4.4.3 Soft Ramp-Down Before Filter Mode Change (RMP_DN) ............................................... 21 4.5 Invert Control (Address 05h) ....................................................................................................... 21 4.5.1 Invert Signal Polarity (INV_XX) ........................................................................................ 21 4.6 Mixing Control Pair 1 (Channels A1 & B1)(Address 06h) Mixing Control Pair 2 (Channels A2 & B2)(Address 09h) Mixing Control Pair 3 (Channels A3 & B3)(Address 0Ch) Mixing Control Pair 4 (Channels A4 & B4)(Address 0Fh) ......................................................... 21 4.6.1 Channel A Volume = Channel B Volume (A=B) ............................................................... 21 4.6.2 ATAPI Channel Mixing and Muting (ATAPI) .................................................................... 22 4.6.3 Functional Mode (FM) ...................................................................................................... 23 4.7 Volume Control (Addresses 07h, 08h, 0Ah, 0Bh, 0Dh, 0Eh, 10h, 11h) ...................................... 23 4.7.1 Mute (MUTE) ................................................................................................................... 23 4.7.2 Volume Control (xx_VOL) ................................................................................................ 23 4.8 Chip Revision (Address 12h) ....................................................................................................... 24 4.8.1 Part Number ID (PART) [Read Only] ............................................................................... 24 5. PIN DESCRIPTION .............................................................................................................................. 25 6. APPLICATIONS .................................................................................................................................. 28 6.1 Grounding and Power Supply Decoupling .................................................................................... 28 2 DS514F2 CS4382 6.2 PCM Mode Select ......................................................................................................................... 28 6.3 Recommended Power-Up Sequence ........................................................................................... 28 6.4 Analog Output and Filtering .......................................................................................................... 28 6.5 Interpolation Filter ......................................................................................................................... 28 6.6 Clock Source Selection ................................................................................................................ 29 6.7 Using DSD Mode .......................................................................................................................... 29 7. CONTROL PORT INTERFACE ........................................................................................................... 29 7.1 Enabling the Control Port ............................................................................................................. 30 7.2 Format Selection .......................................................................................................................... 30 7.3 I²C Format .................................................................................................................................... 30 7.3.1 Writing in I²C Format ........................................................................................................ 30 7.3.2 Reading in I²C Format ...................................................................................................... 30 7.4 SPI Format ................................................................................................................................... 30 7.4.1 Writing in SPI ................................................................................................................... 31 7.5 Memory Address Pointer (MAP) .................................................................................................. 31 7.5.1 INCR (Auto Map Increment Enable) ................................................................................ 31 7.5.2 MAP4-0 (Memory Address Pointer) ................................................................................. 32 8. FILTER PLOTS .............................................................................................................................. 33 9. DIAGRAMS ..................................................................................................................... 37 10. PARAMETER DEFINITIONS ............................................................................................................. 40 11. REFERENCES ................................................................................................................................... 40 12. PACKAGE DIMENSIONS ................................................................................................................. 41 13. ORDERING INFORMATION ............................................................................................................. 42 14. REVISION HISTORY ......................................................................................................................... 42 LIST OF FIGURES Figure 1. Serial Mode Input Timing .............................................................................................................. 9 Figure 2. Direct Stream Digital - Serial Audio Input Timing........................................................................ 10 Figure 3. Control Port Timing - I²C Format................................................................................................. 11 Figure 4. Control Port Timing - SPI Format................................................................................................ 12 Figure 5. Typical Connection Diagram Control Port................................................................................... 13 Figure 6. Typical Connection Diagram Stand-Alone .................................................................................. 14 Figure 7. Control Port Timing, I²C Format.................................................................................................. 31 Figure 8. Control Port Timing, SPI Format................................................................................................. 31 Figure 9. Single-Speed (fast) Stopband Rejection..................................................................................... 33 Figure 10. Single-Speed (fast) Transition Band ......................................................................................... 33 Figure 11. Single-Speed (fast) Transition Band (detail) ............................................................................. 33 Figure 12. Single-Speed (fast) Passband Ripple ....................................................................................... 33 Figure 13. Single-Speed (slow) Stopband Rejection ................................................................................. 33 Figure 14. Single-Speed (slow) Transition Band........................................................................................ 33 Figure 15. Single-Speed (slow) Transition Band (detail)............................................................................ 34 Figure 16. Single-Speed (slow) Passband Ripple...................................................................................... 34 Figure 17. Double-Speed (fast) Stopband Rejection ................................................................................. 34 Figure 18. Double-Speed (fast) Transition Band........................................................................................ 34 Figure 19. Double-Speed (fast) Transition Band (detail)............................................................................ 34 Figure 20. Double-Speed (fast) Passband Ripple...................................................................................... 34 Figure 21. Double-Speed (slow) Stopband Rejection ................................................................................ 35 Figure 22. Double-Speed (slow) Transition Band ...................................................................................... 35 Figure 23. Double-Speed (slow) Transition Band (detail) .......................................................................... 35 Figure 24. Double-Speed (slow) Passband Ripple .................................................................................... 35 Figure 25. Quad-Speed (fast) Stopband Rejection .................................................................................... 35 Figure 26. Quad-Speed (fast) Transition Band .......................................................................................... 35 Figure 27. Quad-Speed (fast) Transition Band (detail) .............................................................................. 36 DS514F2 3 CS4382 Figure 28. Quad-Speed (fast) Passband Ripple ........................................................................................ 36 Figure 29. Quad-Speed (slow) Stopband Rejection................................................................................... 36 Figure 30. Quad-Speed (slow) Transition Band......................................................................................... 36 Figure 31. Quad-Speed (slow) Transition Band (detail)............................................................................. 36 Figure 32. Quad-Speed (slow) Passband Ripple....................................................................................... 36 Figure 33. Format 0 - Left Justified up to 24-bit Data................................................................................. 37 Figure 34. Format 1 - I²S up to 24-bit Data ................................................................................................ 37 Figure 35. Format 2 - Right Justified 16-bit Data ....................................................................................... 37 Figure 36. Format 3 - Right Justified 24-bit Data ....................................................................................... 37 Figure 37. Format 4 - Right Justified 20-bit Data ....................................................................................... 38 Figure 38. Format 5 - Right Justified 18-bit Data ....................................................................................... 38 Figure 39. De-Emphasis Curve.................................................................................................................. 38 Figure 40. Channel Pair Routing Diagram (x = Channel Pair 1, 2, 3, or 4) ................................................ 38 Figure 41. ATAPI Block Diagram (x = channel pair 1, 2, 3, or 4) ............................................................... 39 Figure 42. Recommended Output Filter..................................................................................................... 39 LIST OF TABLES Table 1. Digital Interface Formats - PCM Mode......................................................................................... 17 Table 2. Digital Interface Formats - DSD Mode ......................................................................................... 18 Table 3. ATAPI Decode ............................................................................................................................. 22 Table 4. Example Digital Volume Settings ................................................................................................. 23 Table 5. Common Clock Frequencies........................................................................................................ 27 Table 6. Digital Interface Format, Stand-Alone Mode Options................................................................... 27 Table 7. Mode Selection, Stand-Alone Mode Options ............................................................................... 27 Table 8. Direct Stream Digital (DSD), Stand-Alone Mode Options ............................................................ 27 4 DS514F2 CS4382 1. CHARACTERISTICS AND SPECIFICATIONS ANALOG CHARACTERISTICS (Full-Scale Output Sine Wave, 997 Hz; Measurement Bandwidth 10 Hz to 20 kHz, unless otherwise specified; Test load RL = 3 kΩ, CL = 100 pF, VA = 5 V, VD = 3.3 V (see Figure 5) For Single-Speed Mode, Fs = 48 kHz, SCLK = 3.072 MHz, MCLK = 12.288 MHz; For Double-Speed Mode, Fs = 96 kHz, SCLK = 6.144 MHz, MCLK = 12.288 MHz; For Quad-Speed Mode, Fs = 192 kHz, SCLK = 12.288 MHz, MCLK = 24.576 MHz; For Direct Stream Digital Mode, Fs = 128 x 48 kHz, DSD_SCLK = 6.144 MHz, MCLK = 12.288 MHz). Parameters Specified Temperature Range Dynamic Range (Note 2) unweighted A-Weighted 16-bit unweighted (Note 3) A-Weighted 24-bit (Note 2) THD+N 0 dB -20 dB -60 dB 0 dB -20 dB -60 dB (1 kHz) 24-bit Symbol TA Min -10 105 108 - Typ 111 114 94 97 -100 -91 -51 -94 -74 -34 114 90 Max 70 -94 - Unit °C dB dB dB dB dB dB dB dB dB dB dB dB CS4382-KQZ Dynamic Performance - All PCM modes and DSD (Note 1) Total Harmonic Distortion + Noise 16-bit (Note 3) Idle Channel Noise / Signal-to-noise ratio Interchannel Isolation Notes: 1. CS4382-KQZ parts are tested at 25°C. 2. One-half LSB of triangular PDF dither is added to data. 3. Performance limited by 16-bit quantization noise. DS514F2 5 CS4382 ANALOG CHARACTERISTICS (Continued) Parameters Analog Output - All PCM modes and DSD Full Scale Differential Output Voltage Quiescent Voltage Max Current from VQ Interchannel Gain Mismatch Gain Drift Output Impedance AC-Load Resistance Load Capacitance (Note 4) Symbol VFS VQ IQMAX Min 86% VA 3 - Typ 91% VA 50% VA 1 0.1 100 100 - Max 96% VA 100 Units Vpp VDC μA dB ppm/°C Ω kΩ pF (Note 4) ZOUT RL CL POWER AND THERMAL CHARACTERISTICS Parameters Power Supplies normal operation, VA= 5 V VD= 5 V VD= 3.3 V Interface current, VLC=5 V (Notes 6, 7) VLS=5 V power-down state (all supplies) (Note 8) Power Dissipation (Note 5) VA = 5 V, VD = 3.3 V normal operation power-down (Note 8) VA = 5 V, VD = 5 V normal operation power-down (Note 8) Package Thermal Resistance multi-layer dual-layer Power Supply Rejection Ratio (Note 9) (1 kHz) (60 Hz) Power Supply Current (Note 5) IA ID ID ILC ILS Ipd 60 45 30 2 84 200 400 1 525 1 48 65 15 60 40 66 70 46 485 680 mA mA mA μA μA μA mW mW mW mW °C/Watt °C/Watt °C/Watt dB dB Symbol Min Typ Max Units θJA θJA θJC PSRR Notes: 4. VFS is tested under load RL and includes attenuation due to ZOUT 5. Current consumption increases with increasing FS within a given speed mode and is signal dependant. Max values are based on highest FS and highest MCLK. 6. ILC measured with no external loading on the SDA pin. 7. This specification is violated when the VLC supply is greater than VD and when pin 16 (M1/SDA) is tied or pulled low. Logic tied to pin 16 needs to be able to sink this current. 8. Power Down Mode is defined as RST pin = Low with all clock and data lines held static. 9. Valid with the recommended capacitor values on FILT+ and VQ as shown in Figures 5 and 6. 6 DS514F2 CS4382 ANALOG FILTER RESPONSE Fast Roll-Off Slow Roll-Off (Note 10) Parameter Min Typ Max Min Typ Max Combined Digital and On-chip Analog Filter Response - Single-Speed Mode (Note 11) Passband (Note 12) to -0.01 dB corner to -3 dB corner Frequency Response 10 Hz to 20 kHz StopBand StopBand Attenuation (Note 13) Group Delay Passband Group Delay Deviation 0 - 20 kHz De-emphasis Error (Note 14) Fs = 32 kHz (Relative to 1 kHz) Fs = 44.1 kHz Fs = 48 kHz 0.417 0.499 +0.01 6.5/Fs ±0.14/Fs ±0.23 ±0.14 ±0.09 Response - Double-Speed Mode - 96 kHz (Note 11) 0 .430 0 .296 0 .499 0 .499 -0.01 0.01 -0.01 0.01 .583 .792 80 70 4.6/Fs 3.9/Fs ±0.03/Fs ±0.01/Fs Response - Quad-Speed Mode - 192 kHz (Note 11) 0 .105 0 .104 0 .490 0 .481 -0.01 0.01 -0.01 0.01 .635 .868 90 75 4.7/Fs 4.2/Fs ±0.01/Fs ±0.01/Fs Response - DSD Mode (Note 11) 0 20 0 120 -.01 0.1 0 0 -0.01 .547 90 12/Fs .454 .499 +0.01 ±0.41/Fs ±0.23 ±0.14 ±0.09 0 0 -0.01 .583 64 - Unit Fs Fs dB Fs dB s s dB dB dB Fs Fs dB Fs dB s s Fs Fs dB Fs dB s s kHz kHz dB Combined Digital and On-chip Analog Filter Passband (Note 12) to -0.01 dB corner to -3 dB corner Frequency Response 10 Hz to 20 kHz StopBand StopBand Attenuation (Note 13) Group Delay Passband Group Delay Deviation 0 - 20 kHz to -0.01 dB corner to -3 dB corner Frequency Response 10 Hz to 20 kHz StopBand StopBand Attenuation (Note 13) Group Delay Passband Group Delay Deviation 0 - 20 kHz Combined Digital and On-chip Analog Filter Passband (Note 12) Combined Digital and On-chip Analog Filter Passband (Note 12) to -0.1 dB corner to -3 dB corner Frequency Response 10 Hz to 20 kHz Notes: 10. Slow Roll-Off interpolation filter is only available in Control Port Mode. 11. Filter response is not tested but is guaranteed by design. 12. Response is clock dependent and will scale with Fs. Note that the response plots (Figures 9 to 32) have been normalized to Fs and can be de-normalized by multiplying the X-axis scale by Fs. 13. Single and Double-Speed Mode Measurement Bandwidth is from stopband to 3 Fs. Quad-Speed Mode Measurement Bandwidth is from stopband to 1.34 Fs. 14. De-emphasis is available only in Single-Speed Mode; Only 44.1 kHz De-emphasis is available in StandAlone Mode DS514F2 7 CS4382 DIGITAL CHARACTERISTICS (For KQZ TA = -10°C to +70°C; VLC = VLS = 1.8 V to 5.5 V) Parameters High-Level Input Voltage Low-Level Input Voltage Input Leakage Current Input Capacitance Maximum MUTEC Drive Current MUTEC High-Level Output Voltage MUTEC Low-Level Output Voltage Serial Data Port Control Port Serial Data Port Control Port (Note 7) Symbol VIH VIH VIL VIL Iin Min 70% VLS 70% VLC - Typ 8 3 VA 0 Max 20% VLS 20% VLC ±10 - Units V V V V μA pF mA V V VOH VOL ABSOLUTE MAXIMUM RATINGS (GND = 0 V; all voltages with respect to ground.) Parameters Analog power Digital internal power Serial data port interface power Control port interface power Input Current, Any Pin Except Supplies Digital Input Voltage Serial data port interface Control port interface Ambient Operating Temperature (power applied) Storage Temperature DC Power Supply Symbol VA VD VLS VLC Iin VIND-S VIND-C TA Tstg Min -0.3 -0.3 -0.3 -0.3 -0.3 -0.3 -55 -65 Max 6.0 6.0 6.0 6.0 ±10 VLS+ 0.4 VLC+ 0.4 125 150 Units V V V V mA V V °C °C WARNING: Operation at or beyond these limits may result in permanent damage to the device. Normal operation is not guaranteed at these extremes. RECOMMENDED OPERATING CONDITIONS (GND = 0 V; all voltages with respect to ground.) Parameters DC Power Supply Analog power Digital internal power Serial data port interface power Control port interface power Symbol VA VD VLS VLC Min 4.5 3.0 1.8 1.8 Typ 5.0 3.3 5.0 5.0 Max 5.5 5.5 5.5 5.5 Units V V V V 8 DS514F2 CS4382 SWITCHING CHARACTERISTICS (For KQZ TA = -10°C to +70°C; VLS = 1.8 V to 5.5 V; Inputs: Logic 0 = GND, Logic 1 = VLS, CL = 30 pF) Parameters MCLK Frequency (Note 15) Single-Speed Mode Double-Speed Mode Quad-Speed Mode MCLK Duty Cycle Input Sample Rate Single-Speed Mode Double-Speed Mode Quad-Speed Mode Fs Fs Fs tsclkl tsclkh tsclkw tsclkw tslrd tslrs tsdlrs tsdh (Note 17) 1.024 6.400 6.400 40 4 50 100 45 20 20 2 ---------------MCLK 4 ---------------MCLK 20 20 20 20 0.25 50 50 1.00 51.2 51.2 51.2 60 50 100 200 55 4.00 MHz MHz MHz % kHz kHz kHz % ns ns ns ns ns ns ns ns Symbol Min Typ Max Units LRCK Duty Cycle SCLK Pulse Width Low SCLK Pulse Width High SCLK Period (Note 16) SCLK rising to LRCK edge delay SCLK rising to LRCK edge setup time SDATA valid to SCLK rising setup time SCLK rising to SDATA hold time LRCK1 to LRCK2 frequency ratio Notes: 15. See Table 5 on page 27 for suggested MCLK frequencies. 16. This serial clock is available only in Control Port Mode when the MCLK Divide bit is enabled. 17. The higher frequency LRCK must be an exact integer multiple (1, 2, or 4) of the lower frequency LRCK. . LRCK t slrd t slrs t sclkl t sclkh SCLK t sdlrs SDATA t sdh Figure 1. Serial Mode Input Timing DS514F2 9 CS4382 DSD - SWITCHING CHARACTERISTICS (For KQZ TA = -10°C to +70°C; Logic 0 = GND; VLS = 1.8 V to 5.5 V; Logic 1 = VLS Volts; CL = 30 pF) Parameter Master Clock Frequency (Note 18) MCLK Duty Cycle (All DSD modes) DSD_SCLK Pulse Width Low DSD_SCLK Pulse Width High DSD_SCLK Frequency (64x Oversampled) (128x Oversampled) DSD_L / _R valid to DSD_SCLK rising setup time DSD_SCLK rising to DSD_L or DSD_R hold time Symbol Min 4.096 40 Typ 50 - Max 38.4 60 3.2 6.4 - Unit MHz % ns ns MHz MHz ns ns tsclkl tsclkh tsdlrs tsdh 20 20 1.024 2.048 20 20 Note: 18. Min is 4 times 64x DSD or 2 times 128x DSD, and Max is 12 times 64x DSD or 6 times 128x DSD. The proper MCLK to DSD_SCLK ratio must be set either by the DIF registers or the M0:2 pins t sclkh t sclkl DSD_SCLK t sdlrs DSD_L, DSD_R t sdh Figure 2. Direct Stream Digital - Serial Audio Input Timing 10 DS514F2 CS4382 SWITCHING CHARACTERISTICS - CONTROL PORT - I²C® FORMAT (For KQZ TA = -10°C to +70°C; VLC = 1.8 V to 5.5 V; Inputs: Logic 0 = GND, Logic 1 = VLC, CL = 30 pF) Parameter SCL Clock Frequency RST Rising Edge to Start Bus Free Time Between Transmissions Start Condition Hold Time (prior to first clock pulse) Clock Low time Clock High Time Setup Time for Repeated Start Condition SDA Hold Time from SCL Falling SDA Setup time to SCL Rising Rise Time of SCL and SDA Fall Time SCL and SDA Setup Time for Stop Condition Acknowledge Delay from SCL Falling (Note 20) (Note 19) Symbol fscl tirs tbuf thdst tlow thigh tsust thdd tsud trc, trc tfc, tfc tsusp tack Min 500 4.7 4.0 4.7 4.0 4.7 0 250 4.7 - Max 100 1 300 (Note 21) Unit kHz ns µs µs µs µs µs µs ns µs ns µs ns Notes: 19. Data must be held for sufficient time to bridge the transition time, tfc, of SCL. 20. The acknowledge delay is based on MCLK and can limit the maximum transaction speed. 21. 15 15 15 -------------------- for Single-Speed Mode, -------------------- for Double-Speed Mode, ----------------- for Quad-Speed Mode. 256 × Fs 128 × Fs 64 × Fs Note 1 SDA 001100 ADDR AD0 R/W ACK DATA 1-8 ACK DATA 1-8 ACK SCL Start Stop Note: If operation is a write, this byte contains the Memory Address Pointer, MAP. Figure 3. Control Port Timing - I²C Format DS514F2 11 CS4382 SWITCHING CHARACTERISTICS - CONTROL PORT - SPI™ FORMAT (For KQZ TA = -10°C to +70°C; VLC = 1.8 V to 5.5 V; Inputs: Logic 0 = GND, Logic 1 = VLC, CL = 30 pF) Parameter CCLK Clock Frequency RST Rising Edge to CS Falling CCLK Edge to CS Falling CS High Time Between Transmissions CS Falling to CCLK Edge CCLK Low Time CCLK High Time CDIN to CCLK Rising Setup Time CCLK Rising to DATA Hold Time Rise Time of CCLK and CDIN Fall Time of CCLK and CDIN (Note 23) (Note 24) (Note 24) (Note 22) Symbol fsclk tsrs tspi tcsh tcss tscl tsch tdsu tdh tr2 tf2 Min 500 500 1.0 20 1 ---------------MCLK 1 ---------------MCLK 40 15 - Max MCLK ---------------2 100 100 Unit MHz ns ns µs ns ns ns ns ns ns ns Notes: 22. tspi only needed before first falling edge of CS after RST rising edge. tspi = 0 at all other times. 23. Data must be held for sufficient time to bridge the transition time of CCLK. 24. For FSCK < 1 MHz. RST t srs CS t spi t css CCLK t r2 CDIN t scl t sch t csh t f2 t dsu t dh Figure 4. Control Port Timing - SPI Format 12 DS514F2 CS4382 2. TYPICAL CONNECTION DIAGRAM + 3 .3 V to + 5 V 1 µF + 0 .1 µ F +5 V 0 .1 µ F + 1 µF 4 VD 32 VA AO UTA1+ 39 A O U TA 16 7 40 A n a lo g C o n d itio n in g a n d M u tin g M C LK LRC K1 S C LK1 AO UTB1+ 38 9 PCM D ig ita l A u d io S o u rc e A O U TB 1AO UTA2+ 37 35 A n a lo g C o n d itio n in g a n d M u tin g 10 12 LRC K2 SCLK2 S D IN 1 S D IN 2 S D IN 3 8 11 A O U TA 2AO UTB2+ A O U TB 2AO UTA3+ 36 A n a lo g C o n d itio n in g a n d M u tin g 34 13 33 29 A n a lo g C o n d itio n in g a n d M u tin g 14 S D IN 4 + 1 .8 V to + 5 V 0 .1 µ F 43 VLS A O U TA 3- 30 28 27 A n a lo g C o n d itio n in g a n d M u tin g CS4382 AO UTB3+ A O U TB 33 2 1 A n a lo g C o n d itio n in g a n d M u tin g DSDA1 DSDB1 DSDA2 AO UTA4+ 25 A O U TA 4AO UTB4+ A O U TB 4- 26 24 23 A n a lo g C o n d itio n in g a n d M u tin g DSD A u d io S o u rc e 48 47 DSDB2 DSDA3 DSDB3 DSDA4 DSDB4 A n a lo g C o n d itio n in g a n d M u tin g 46 45 44 MUTEC1 M UTEC 234 41 22 M u te D rive 42 D S D_S CLK 19 M ic ro C o n tro lle r RST S C L /C C L K S D A /C D IN A D O /C S 15 16 17 N o te * 18 0 .1 µ F 2 KΩ 2 KΩ F IL T + 2 0 VLC + 1 .8 V to + 5 V VQ 21 0 .1 µ F + 1 µ F + 0 .1 µ F 47 µF N o te : N e c e s s a ry fo r I C c o n tro l p o rt o p e ra tio n 2 GND 5 GND 31 Figure 5. Typical Connection Diagram Control Port DS514F2 13 CS4382 + 3 .3 V to + 5 V 1 µF 47 K Ω +5 V + 0 .1 µ F 4 VD 0 .1 µ F 32 VA AO UTA1+ AO U TA1- + 1 µF VLS N o te D S D 39 40 38 37 A n a lo g C o n d itio n in g a n d M u tin g 6 7 M C LK LRC K1 SC LK1 LRC K2 SCLK2 AO UTB1+ AO U TB1- 9 PCM D ig ita l A u d io S o u rc e A n a lo g C o n d itio n in g a n d M u tin g 10 12 8 11 MUTEC1 41 S D IN 1 S D IN 2 S D IN 3 S D IN 4 AO UTA2+ AO U TA2AO UTB2+ M u te D riv e 13 14 35 36 34 33 A n a lo g C o n d itio n in g a n d M u tin g + 1 .8 V to + 5 V 0 .1 µ F 43 VLS C S 4 3 8 2 AO U TB2AO UTA3+ AO U TA33 2 A n a lo g C o n d itio n in g a n d M u tin g 29 30 28 27 25 26 24 A n a lo g C o n d itio n in g a n d M u tin g DSDA1 DSDB1 DSDA2 DSDB2 AO UTB3+ AO U TB3AO UTA4+ AO U TA4AO UTB4+ AO U TB4- 1 DSD A u d io S o u rc e 48 A n a lo g C o n d itio n in g a n d M u tin g 47 46 DSDA3 DSDB3 DSDA4 A n a lo g C o n d itio n in g a n d M u tin g 45 44 DSDB4 N o te D S D 23 A n a lo g C o n d itio n in g a n d M u tin g 47 K Ω 42 M 3 (D S D _ S C L K ) M U TE C234 22 M u te D riv e 15 S ta n d -A lo n e M ode C o n fig u ra tio n M2 M1 M0 RST 16 17 19 N o te V L C F IL T + 2 0 VQ 21 0 .1 µ F + + 1 µF 0 .1 µ F 47 µF + 1 .8 V to + 5 V 18 0 .1 µ F VLC GND 5 GND 31 N o te V L C : If s e rie s re s is to rs a re u s e d th e y m u s t b e < 1 k O h m . If p o s s ib le tie V L C to th e V D s u p p ly to re d u c e p o s s ib le e x c e s s c u rre n t c o n s u m p tio n fro m V L C . N o te D S D : F o r D S D o p e ra tio n : 1 ) L R C K 1 m u s t b e tie d to V L S a n d re m a in s ta tic h ig h . 2 ) M 3 P C M s ta n d -a lo n e c o n fig u ra tio n p in b e c o m e s D S D _ S C L K Figure 6. Typical Connection Diagram Stand-Alone 14 DS514F2 CS4382 3. REGISTER QUICK REFERENCE Addr 01h 02h 03h 04h 05h 06h Function Mode Control 1 default Mode Control 2 default Mode Control 3 default Filter Control default Invert Control default Mixing Control Pair 1 (AOUTx1) default Vol. Control A1 default Vol. Control B1 default Mixing Control Pair 2 (AOUTx2) default 7 CPEN 0 Reserved 0 SZC1 1 Reserved 0 INV_B4 0 P1_A=B 0 A1_MUTE 0 B1_MUTE 0 P2_A=B 0 A2_MUTE 0 B2_MUTE 0 P3_A=B 0 A3_MUTE 0 B3_MUTE 0 P4_A=B 0 A4_MUTE 0 B4_MUTE 0 PART3 1 6 FREEZE 0 DIF2 0 SZC0 0 Reserved 0 INV_A4 0 P1ATAPI4 0 A1_VOL6 0 B1_VOL6 0 P2ATAPI4 0 A2_VOL6 0 B2_VOL6 0 P3ATAPI4 0 A3_VOL6 0 B3_VOL6 0 P4ATAPI4 0 A4_VOL6 0 B4_VOL6 0 PART2 0 5 0 DIF1 0 SNGLVOL 0 Reserved 0 INV_B3 0 P1ATAPI3 1 A1_VOL5 0 B1_VOL5 0 P2ATAPI3 1 A2_VOL5 0 B2_VOL5 0 P3ATAPI3 1 A3_VOL5 0 B3_VOL5 0 P4ATAPI3 1 A4_VOL5 0 B4_VOL5 0 PART1 1 4 0 DIF0 0 RMP_UP 0 FILT_SEL 0 INV_A3 0 P1ATAPI2 0 A1_VOL4 0 B1_VOL4 0 P2ATAPI2 0 A2_VOL4 0 B2_VOL4 0 P3ATAPI2 0 A3_VOL4 0 B3_VOL4 0 P4ATAPI2 0 A4_VOL4 0 B4_VOL4 0 PART0 0 3 0 0 MUTEC+/0 Reserved 0 INV_B2 0 P1ATAPI1 0 A1_VOL3 0 B1_VOL3 0 P2ATAPI1 0 A2_VOL3 0 B2_VOL3 0 P3ATAPI1 0 A3_VOL3 0 B3_VOL3 0 P4ATAPI1 0 A4_VOL3 0 B4_VOL3 0 Reserved - 2 0 0 AMUTE 1 DEM1 0 INV_A2 0 P1ATAPI0 1 A1_VOL2 0 B1_VOL2 0 P2ATAPI0 1 A2_VOL2 0 B2_VOL2 0 P3ATAPI0 1 A3_VOL2 0 B3_VOL2 0 P4ATAPI0 1 A4_VOL2 0 B4_VOL2 0 Reserved - 1 0 0 Reserved 0 DEM0 0 INV_B1 0 P1FM1 0 A1_VOL1 0 B1_VOL1 0 P2FM1 0 A2_VOL1 0 B2_VOL1 0 P3FM1 0 A3_VOL1 0 B3_VOL1 0 P4FM1 0 A4_VOL1 0 B4_VOL1 0 Reserved - 0 PDN 1 0 MUTEC 0 RMP_DN 0 INV_A1 0 P1FM0 0 A1_VOL0 0 B1_VOL0 0 P2FM0 0 A2_VOL0 0 B2_VOL0 0 P3FM0 0 A3_VOL0 0 B3_VOL0 0 P4FM0 0 A4_VOL0 0 B4_VOL0 0 Reserved - MCLKDIV DAC4_DIS DAC3_DIS DAC2_DIS DAC1_DIS SDIN4CLK SDIN3CLK SDIN2CLK SDIN1CLK 07h 08h 09h 0Ah Vol. Control A2 default 0Bh Vol. Control B2 default 0Ch Mixing Control Pair 3 (AOUTx3) default 0Dh Vol. Control A3 default 0Eh Vol. Control B3 default 0Fh Mixing Control Pair 4 (AOUTx4) default 10h 11h 12h Vol. Control A4 default Vol. Control B4 default Chip Revision default DS514F2 15 CS4382 4. REGISTER DESCRIPTION Note: All registers are read/write in I²C Mode and write-only in SPI, unless otherwise noted. 4.1 Mode Control 1 (Address 01h) 7 CPEN 0 6 FREEZE 0 5 MCLKDIV 0 4 DAC4_DIS 0 3 DAC3_DIS 0 2 DAC2_DIS 0 1 DAC1_DIS 0 0 PDN 1 4.1.1 Control Port Enable (CPEN) Default = 0 0 - Disabled 1 - Enabled Function: This bit defaults to 0, allowing the device to power-up in Stand-Alone Mode. The Control Port Mode can be accessed by setting this bit to 1. This will allow the operation of the device to be controlled by the registers and the pin definitions will conform to Control Port Mode. To accomplish a clean power-up, the user should write this bit within 10 ms following the release of Reset. 4.1.2 Freeze Controls (FREEZE) Default = 0 0 - Disabled 1 - Enabled Function: This function allows modifications to be made to the registers without the changes taking effect until the FREEZE is disabled. To make multiple changes in the Control port registers take effect simultaneously, enable the FREEZE bit, make all register changes, then Disable the FREEZE bit. 4.1.3 Master Clock Divide Enable (MCLKDIV) Default = 0 0 - Disabled 1 - Enabled Function: The MCLKDIV bit enables a circuit which divides the externally applied MCLK signal by 2 prior to all other internal circuitry. 4.1.4 DAC Pair Disable (DACx_DIS) Default = 0 0 - DAC Pair x Enabled 1 - DAC Pair x Disabled Function: When the bit is set, the respective DAC channel pair (AOUTAx and AOUTBx) will remain in a reset state. It is advised that changes to these bits be made while the power-down (PDN) bit is enabled to eliminate the possibility of audible artifacts. 16 DS514F2 CS4382 4.1.5 Power Down (PDN) Default = 1 0 - Disabled 1 - Enabled Function: The entire device will enter a low-power state when this function is enabled, and the contents of the control registers are retained in this mode. The power-down bit defaults to ‘enabled’ on power-up and must be disabled before normal operation in Control Port Mode can occur. 4.2 Mode Control 2 (Address 02h) 6 DIF2 0 5 DIF1 0 4 DIF0 0 3 SDIN4CLK 0 2 SDIN3CLK 0 1 SDIN2CLK 0 0 SDIN1CLK 0 7 Reserved 0 4.2.1 Digital Interface Format (DIF) Default = 000 - Format 0 (Left Justified, up to 24-bit data) Function: These bits select the interface format for the serial audio input. The Functional Mode bits determine whether PCM or DSD Mode is selected. PCM Mode: The required relationship between the Left/Right clock, serial clock and serial data is defined by the Digital Interface Format and the options are detailed in Figures 33-38. Note: While in PCM Mode, the DIF bits should only be changed when the power-down (PDN) bit is set to ensure proper switching from one mode to another. DIF2 0 0 0 0 1 1 1 1 DIF1 0 0 1 1 0 0 1 1 DIF0 0 1 0 1 0 1 0 1 DESCRIPTION Left Justified, up to 24-bit data I²S, up to 24-bit data Right Justified, 16-bit data Right Justified, 24-bit data Right Justified, 20-bit data Right Justified, 18-bit data Reserved Reserved Format 0 1 2 3 4 5 FIGURE 33 34 35 36 37 38 Table 1. Digital Interface Formats - PCM Mode DS514F2 17 CS4382 DSD Mode: The relationship between the oversampling ratio of the DSD audio data and the required Master clock to DSD data rate is defined by the Digital Interface Format pins. An additional write of 99h to register 00h and 80h to register 1Ah is required to access the modes denoted with *. DIF2 0 0 0 0 1 1 1 1 DIF1 0 0 1 1 0 0 1 1 DIFO 0 1 0 1 0 1 0 1 DESCRIPTION 64x oversampled DSD data with a 4x MCLK to DSD data rate 64x oversampled DSD data with a 6x MCLK to DSD data rate 64x oversampled DSD data with a 8x MCLK to DSD data rate 64x oversampled DSD data with a 12x MCLK to DSD data rate 128x oversampled DSD data with a 2x MCLK to DSD data rate 128x oversampled DSD data with a 3x MCLK to DSD data rate 128x oversampled DSD data with a 4x MCLK to DSD data rate 128x oversampled DSD data with a 6x MCLK to DSD data rate Table 2. Digital Interface Formats - DSD Mode Note * * * * * * 4.2.2 Serial Audio Data Clock Source (SDINXCLK) Default = 0 0 - SDINx clocked by SCLK1 and LRCK1 1 - SDINx clocked by SCLK2 and LRCK2 Function: The SDINxCLK bit specifies which SCLK/LRCK input pair is used to clock in the data on the given SDINx line. For more details see “Clock Source Selection” on page 29. 4.3 Mode Control 3 (Address 03h) 7 SZC1 1 6 SZC0 0 5 SNGLVOL 0 4 RMP_UP 0 3 Reserved 0 2 AMUTE 1 1 Reserved 0 0 MUTEC 0 4.3.1 Soft Ramp and Zero Cross Control (SZC) Default = 10 00 - Immediate Change 01 - Zero Cross 10 - Soft Ramp 11 - Soft Ramp on Zero Crossings Function: Immediate Change When Immediate Change is selected all level changes will take effect immediately in one step. Zero Cross Zero Cross Enable dictates that signal level changes, either by attenuation changes or muting, will occur on a signal zero crossing to minimize audible artifacts. The requested level change will occur after a timeout period between 512 and 1024 sample periods (10.7 ms to 21.3 ms at 48 kHz sample rate) if the signal does not encounter a zero crossing. The zero cross function is independently monitored and implemented for each channel. 18 DS514F2 CS4382 Soft Ramp Soft Ramp allows level changes, both muting and attenuation, to be implemented by incrementally ramping, in 1/8 dB steps, from the current level to the new level at a rate of 1 dB per 8 left/right clock periods. Soft Ramp on Zero Crossing Soft Ramp and Zero Cross Enable dictates that signal level changes, either by attenuation changes or muting, will occur in 1/8 dB steps and be implemented on a signal zero crossing. The 1/8 dB level change will occur after a timeout period between 512 and 1024 sample periods (10.7 ms to 21.3 ms at 48 kHz sample rate) if the signal does not encounter a zero crossing. The zero cross function is independently monitored and implemented for each channel. 4.3.2 Single Volume Control (SNGLVOL) Default = 0 0 - Disabled 1 - Enabled Function: The individual channel volume levels are independently controlled by their respective Volume Control Bytes when this function is disabled. The volume on all channels is determined by the A1 Channel Volume Control Byte, and the other Volume Control Bytes are ignored when this function is enabled. 4.3.3 Soft Volume Ramp-Up After Error (RMP_UP) Default = 0 0 - Disabled 1 - Enabled Function: An un-mute will be performed after executing a filter mode change, after a LRCK/MCLK ratio change or error, and after changing the Functional Mode. When this feature is enabled, this un-mute is effected, similar to attenuation changes, by the Soft and Zero Cross bits in the Mode Control 3 register. When disabled, an immediate un-mute is performed in these instances. Note: For best results, it is recommended that this feature be used in conjunction with the RMP_DN bit. 4.3.4 Mutec Polarity (MUTEC+/-) Default = 0 0 - Active High 1 - Active Low Function: The active polarity of the MUTEC pin(s) is determined by this register. When set to 0 (default), the MUTEC pins are high when active. When set to 1 the MUTEC pin(s) are low when active. Note: When the onboard mute circuitry is designed for active low, the MUTEC outputs will be high (unmuted) for the period of time during reset and before this bit is enabled to 1. DS514F2 19 CS4382 4.3.5 Auto-Mute (AMUTE) Default = 1 0 - Disabled 1 - Enabled Function: The Digital-to-Analog converter output will mute following the reception of 8192 consecutive audio samples of static 0 or -1. A single sample of non-static data will release the mute. Detection and muting is done independently for each channel. The quiescent voltage on the output will be retained and the Mute Control pin will go active during the mute period. The muting function is affected, similar to volume control changes, by the Soft and Zero Cross bits in the Mode Control 3 register. 4.3.6 Mutec Pin Control (MUTEC) Default = 0 0 - Two Mute control signals 1 - Single mute control signal on MUTEC1 Function: Selects how the internal mute signals are routed to the MUTEC1 and MUTEC234 pins. When set to ‘0’, a logical AND of DAC pair 1 mute control signals are output on MUTEC1 and a logical AND of the mute control signals of DAC pairs 2, 3, and 4 are output on MUTEC234. When set to ‘1’, a logical AND of all DAC pair mute control signals is output on the MUTEC1 pin, MUTEC234 will remain static. For more information on the use of the mute control function see the MUTEC1 and MUTEC234 pins in Section 5. Pin Description. 4.4 Filter Control (Address 04h) 6 Reserved 0 5 Reserved 0 4 FILT_SEL 0 3 Reserved 0 2 DEM1 0 1 DEM0 0 0 RMP_DN 0 7 Reserved 0 4.4.1 Interpolation Filter Select (FILT_SEL) Default = 0 0 - Fast roll-off 1 - Slow roll-off Function: This Function allows the user to select whether the interpolation filter has a fast or slow roll off. For filter characteristics please see Section 1. 4.4.2 De-Emphasis Control (DEM) Default = 00 00 - Disabled 01 - 44.1 kHz 10 - 48 kHz 11 - 32 kHz Function: 20 DS514F2 CS4382 Selects the appropriate digital filter to maintain the standard 15 ms/50 ms digital de-emphasis filter response at 32, 44.1 or 48 kHz sample rates. (see Figure 39) De-emphasis is only available in Single-Speed Mode. 4.4.3 Soft Ramp-Down Before Filter Mode Change (RMP_DN) Default = 0 0 - Disabled 1 - Enabled Function: A mute will be performed prior to executing a filter mode change. When this feature is enabled, this mute is effected, similar to attenuation changes, by the Soft and Zero Cross bits in the Mode Control 3 register. When disabled, an immediate mute is performed prior to executing a filter mode change. Note: For best results, it is recommended that this feature be used in conjunction with the RMP_UP bit. 4.5 Invert Control (Address 05h) 6 INV_A4 0 5 INV_B3 0 4 INV_A3 0 3 INV_B2 0 2 INV_A2 0 1 INV_B1 0 0 INV_A1 0 7 INV_B4 0 4.5.1 Invert Signal Polarity (INV_XX) Default = 0 0 - Disabled 1 - Enabled Function: When enabled, these bits will invert the signal polarity of their respective channels. 4.6 Mixing Control Pair 1 (Channels A1 & B1)(Address 06h) Mixing Control Pair 2 (Channels A2 & B2)(Address 09h) Mixing Control Pair 3 (Channels A3 & B3)(Address 0Ch) Mixing Control Pair 4 (Channels A4 & B4)(Address 0Fh) 6 PxATAPI4 0 5 PxATAPI3 1 4 PxATAPI2 0 3 PxATAPI1 0 2 PxATAPI0 1 1 PxFM1 0 0 PxFM0 0 7 Px_A=B 0 4.6.1 Channel A Volume = Channel B Volume (A=B) Default = 0 0 - Disabled 1 - Enabled Function: The AOUTAx and AOUTBx volume levels are independently controlled by the A and the B Channel Volume Control Bytes when this function is disabled. The volume on both AOUTAx and AOUTBx are determined by the A Channel Attenuation and Volume Control Bytes (per A-B pair), and the B Channel Bytes are ignored when this function is enabled. DS514F2 21 CS4382 4.6.2 ATAPI Channel Mixing and Muting (ATAPI) Default = 01001 - AOUTAx=aL, AOUTBx=bR (Stereo) Function: The CS4382 implements the channel mixing functions of the ATAPI CD-ROM specification. The ATAPI functions are applied per A-B pair. Refer to Table 3 and Figure 41 for additional information. ATAPI4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ATAPI3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 ATAPI2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 ATAPI1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 ATAPI0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 AOUTAx MUTE MUTE MUTE MUTE aR aR aR aR aL aL aL aL a[(L+R)/2] a[(L+R)/2] a[(L+R)/2] a[(L+R)/2] MUTE MUTE MUTE MUTE aR aR aR aR aL aL aL aL [(aL+bR)/2] [(aL+bR)/2] [(bL+aR)/2] [(aL+bR)/2] AOUTBx MUTE bR bL b[(L+R)/2] MUTE bR bL b[(L+R)/2] MUTE bR bL b[(L+R)/2] MUTE bR bL b[(L+R)/2] MUTE bR bL [(aL+bR)/2] MUTE bR bL [(bL+aR)/2] MUTE bR bL [(aL+bR)/2] MUTE bR bL [(aL+bR)/2] Table 3. ATAPI Decode 22 DS514F2 CS4382 4.6.3 Functional Mode (FM) Default = 00 00 - Single-Speed Mode (4 to 50 kHz sample rates) 01 - Double-Speed Mode (50 to 100 kHz sample rates) 10 - Quad-Speed Mode (100 to 200 kHz sample rates) 11 - Direct Stream Digital Mode Function: Selects the required range of input sample rates or DSD Mode. When DSD Mode is selected for any channel pair then all pairs will switch to DSD Mode. 4.7 Volume Control (Addresses 07h, 08h, 0Ah, 0Bh, 0Dh, 0Eh, 10h, 11h) 6 xx_VOL6 0 5 xx_VOL5 0 4 xx_VOL4 0 3 xx_VOL3 0 2 xx_VOL2 0 1 xx_VOL1 0 0 xx_VOL0 0 7 xx_MUTE 0 4.7.1 Mute (MUTE) Default = 0 0 - Disabled 1 - Enabled Function: The Digital-to-Analog converter output will mute when enabled. The quiescent voltage on the output will be retained. The muting function is effected, similar to attenuation changes, by the Soft and Zero Cross bits. The MUTEC pins will go active during the mute period according to the MUTEC register. 4.7.2 Volume Control (xx_VOL) Default = 0 (No attenuation) Function: The Digital Volume Control registers allow independent control of the signal levels in 1 dB increments from 0 to -127 dB. Volume settings are decoded as shown in Table 4. The volume changes are implemented as dictated by the Soft and Zero Cross bits. All volume settings less than -127 dB are equivalent to enabling the MUTE bit. Binary Code 0000000 0010100 0101000 0111100 1011010 Decimal Value 0 20 40 60 90 Volume Setting 0 dB -20 dB -40 dB -60 dB -90 dB Table 4. Example Digital Volume Settings DS514F2 23 CS4382 4.8 Chip Revision (Address 12h) 7 PART3 1 6 PART2 0 5 PART1 1 4 PART0 0 3 Reserved 2 Reserved 1 Reserved 0 Reserved - 4.8.1 Part Number ID (PART) [Read Only] 1010 - CS4382 Function: This read-only register can be used to identify the model number of the device. 24 DS514F2 CS4382 5. PIN DESCRIPTION M3(DSD_SCLK) AOUTB1+ AOUTA1+ DSDB2 DSDA3 DSDB3 DSDA4 DSDB4 AOUTA1MUTEC1 AOUTB136 35 34 33 32 4 8 4 7 4 6 4 5 4 4 4 3 4 2 41 4 0 3 9 38 3 7 DSDA2 DSDB1 DSDA1 VD GND MCLK LRCK1(DSD_EN) SDIN1 SCLK1 LRCK2 SDIN2 SCLK2 1 2 3 4 5 6 7 8 9 10 11 12 AOUTA2AOUTA2+ AOUTB2+ AOUTB2VA GND AOUTA3AOUTA3+ AOUTB3+ AOUTB3AOUTA4AOUTA4+ VLS CS4382 31 30 29 28 27 26 25 1 3 1 4 1 5 1 6 1 7 1 8 1 9 20 2 1 2 2 23 2 4 M0(AD0/CS ) M1(SDA/CDIN) MUTEC234 M2(SCL/CCLK) AOUTB4+ RST AOUTB4S DIN3 SDIN4 FILT+ VLC VQ Pin Name VD GND MCLK LRCK1 LRCK2 SDIN1 SDIN2 SDIN3 SDIN4 SCLK1 SCLK2 VLC RST FILT+ # 4 5 31 6 7 10 8 11 13 14 9 12 18 19 20 Pin Description Digital Power (Input) - Positive power supply for the digital section. Refer to the Recommended Operating Conditions for appropriate voltages. Ground (Input) - Ground reference. Should be connected to analog ground. Master Clock (Input) - Clock source for the delta-sigma modulator and digital filters. Table 5 illustrates several standard audio sample rates and the required master clock frequency. Left Right Clock (Input) - Determines which channel, Left or Right, is currently active on the serial audio data line. The frequency of the left/right clock must be at the audio sample rate, Fs. Serial Audio Data Input (Input) - Input for two’s complement serial audio data. Serial Clock (Input) - Serial clock for the serial audio interface. Control Port Power (Input) - Determines the required signal level for the control port. Refer to the Recommended Operating Conditions for appropriate voltages. Reset (Input) - The device enters a low power mode and all internal registers are reset to their default settings when low. Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits. Requires the capacitive decoupling to analog ground, as shown in the Typical Connection Diagram. Quiescent Voltage (Output) - Filter connection for internal quiescent voltage. VQ must be capacitively coupled to analog ground, as shown in the Typical Connection Diagram. The nominal voltage level is specified in the Analog Characteristics and Specifications section. VQ presents an appreciable source impedance and any current drawn from this pin will alter device performance. However, VQ can be used to bias the analog circuitry assuming there is no AC signal component and the DC current is less than the maximum specified in the Analog Characteristics and Specifications section. VQ 21 DS514F2 25 CS4382 Pin Name MUTEC1 MUTEC234 AOUTA1 +,AOUTB1 +,AOUTA2 +,AOUTB2 +,AOUTA3 +,AOUTB3 +,AOUTA4 +,AOUTB4 +,VA VLS # 41 22 Pin Description Mute Control (Output) - The Mute Control pins go high during power-up initialization, reset, muting, power-down or if the master clock to left/right clock frequency ratio is incorrect. These pins are intended to be used as a control for external mute circuits to prevent the clicks and pops that can occur in any single supply system. The use of external mute circuits are not mandatory but may be desired for designs requiring the absolute minimum in extraneous clicks and pops. 39, 40 38, 37 35, 36 34, 33 Differential Analog Output (Output) - The full scale differential analog output level is specified in the 29, 30 Analog Characteristics specification table. 28, 27 25, 26 24, 23 32 43 Analog Power (Input) - Positive power supply for the analog section. Refer to the Recommended Operating Conditions for appropriate voltages. Serial Audio Interface Power (Input) - Determines the required signal level for the serial audio interface. Refer to the Recommended Operating Conditions for appropriate voltages. Serial Control Port Clock (Input) - Serial clock for the serial control port. Requires an external pull-up resistor to the logic interface voltage in I²C Mode as shown in the Typical Connection Diagram. Serial Control Data (Input/Output) - SDA is a data I/O line in I²C Mode and requires an external pull-up resistor to the logic interface voltage, as shown in the Typical Connection Diagram. CDIN is the input data line for the control port interface in SPI Mode. Address Bit 0 (I²C) / Control Port Chip Select (SPI) (Input) - AD0 is a chip address pin in I²C Mode; CS is the chip select signal for SPI format. Control Port Definitions SCL/CCLK 15 SDA/CDIN 16 AD0/CS 17 Stand-Alone Definitions M0 M1 M2 M3 DSD_SCLK DSD_EN DSDA1 DSDB1 DSDA2 DSDB2 DSDA3 DSDB3 DSDA4 DSDB4 17 16 15 42 42 7 3 2 1 48 47 46 45 44 Mode Selection (Input) - Determines the operational mode of the device as detailed in Tables 6 and 7. DSD Definitions DSD Serial Clock (Input) - Serial clock for the Direct Stream Digital audio interface. DSD-Enable (Input) - When held at logic ‘1’ the device will enter DSD Mode (Stand-Alone Mode only). Direct Stream Digital Input (Input) - Input for Direct Stream Digital serial audio data. 26 DS514F2 CS4382 Mode (sample-rate range) MCLK Ratio Single-Speed (4 to 50 kHz) Sample Rate (kHz) 32 44.1 48 MCLK (MHz) Control port only modes 1024x* 32.7680 45.1584 49.1520 512x* 32.7680 45.1584 49.1520 256x* 45.1584 49.1520 256x 384x 512x 768x* 8.1920 12.2880 16.3840 24.5760 11.2896 16.9344 22.5792 33.8688 12.2880 18.4320 24.5760 36.8640 MCLK Ratio 128x 192x 256x 384x 64 8.1920 12.2880 16.3840 24.5760 Double-Speed (50 to 100 kHz) 88.2 11.2896 16.9344 22.5792 33.8688 96 12.2880 18.4320 24.5760 36.8640 MCLK Ratio 64x 96x 128x 192x 176.4 11.2896 16.9344 22.5792 33.8688 Quad-Speed (100 to 200 kHz) 192 12.2880 18.4320 24.5760 36.8640 Note: *These modes are only available in Control Port Mode by setting the MCLKDIV bit = 1. Table 5. Common Clock Frequencies M1 (DIF1) 0 0 1 1 M0 (DIF0) 0 1 0 1 DESCRIPTION Left Justified, up to 24-bit data I²S, up to 24-bit data Right Justified, 16-bit Data Right Justified, 24-bit Data FORMAT 0 1 2 3 FIGURE 33 34 35 36 Table 6. Digital Interface Format, Stand-Alone Mode Options M3 0 0 1 1 M2 (DEM) 0 1 0 1 DESCRIPTION Single-Speed without De-Emphasis (4 to 50 kHz sample rates) Single-Speed with 44.1 kHz De-Emphasis; see Figure 39 Double-Speed (50 to 100 kHz sample rates) Quad-Speed (100 to 200 kHz sample rates) Table 7. Mode Selection, Stand-Alone Mode Options DSD_Mode (LRCK1) 1 1 1 1 1 1 1 1 M2 0 0 0 0 1 1 1 1 M1 0 0 1 1 0 0 1 1 M0 0 1 0 1 0 1 0 1 DESCRIPTION 64x oversampled DSD data with a 4x MCLK to DSD data rate Reserved Reserved Reserved 128x oversampled DSD data with a 2x MCLK to DSD data rate Reserved Reserved Reserved Table 8. Direct Stream Digital (DSD), Stand-Alone Mode Options DS514F2 27 CS4382 6. APPLICATIONS 6.1 Grounding and Power Supply Decoupling As with any high resolution converter, the CS4382 requires careful attention to power supply and grounding arrangements to optimize performance. Figures 5 and 6 show the recommended power arrangement with VA, VD, VLS and VLC connected to clean supplies. Decoupling capacitors should be located as close to the device package as possible. If desired, all supply pins may be connected to the same supply, but a decoupling capacitor should still be placed on each supply pin (see Section 1. Characteristics and Specifications for recommended voltages). 6.2 PCM Mode Select The CS4382 operates in one of three PCM oversampling modes based on the input sample rate. Mode selection is determined by the M3 and M2 pins in Stand-Alone Mode or the FM bits in Control Port Mode. Single-Speed Mode supports input sample rates up to 50 kHz and uses a 128x oversampling ratio. DoubleSpeed Mode supports input sample rates up to 100 kHz and uses an oversampling ratio of 64x. QuadSpeed Mode supports input sample rates up to 200 kHz and uses an oversampling ratio of 32x. The PCM digital interface format is determined by the M1 and M0 pins in Stand-Alone Mode or the DIF bits in Control Port Mode. In Stand-Alone Mode, the states of these pins are continually scanned for changes; however, the mode should only be changed while the device is in reset (RST pin low) to ensure proper switching from one mode to another. 6.3 Recommended Power-Up Sequence 1. Hold RST low until the power supply, master, and left/right clocks are stable. In this state, the control port is reset to its default settings and VQ will remain low. 2. Bring RST high. The device will remain in a low power state with VQ low and will initiate the Stand-Alone power-up sequence. The control port will be accessible at this time. If Control Port operation is desired, write the CPEN bit prior to the completion of the Stand-Alone power-up sequence, approximately 512 LRCK cycles in Single-Speed Mode (1024 LRCK cycles in Double-Speed Mode, and 2048 LRCK cycles in Quad-Speed Mode). Writing this bit will halt the Stand-Alone power-up sequence and initialize the control port to its default settings. The desired register settings can be loaded while keeping the PDN bit set to 1. 3. If Control Port Mode is selected via the CPEN bit, set the PDN bit to 0 which will initiate the power-up sequence. 6.4 Analog Output and Filtering The application note “Design Notes for a 2-Pole Filter with Differential Input” discusses the second-order Butterworth filter and differential to single-ended converter which was implemented on the CS4382 evaluation board, CDB4382, as seen in Figure 42. The CS4382 does not include phase or amplitude compensation for an external filter. Therefore, the DAC system phase and amplitude response will be dependent on the external analog circuitry. 6.5 Interpolation Filter To accommodate the increasingly complex requirements of digital audio systems, the CS4382 incorporates selectable interpolation filters for each mode of operation. A “fast” and a “slow” roll-off filter is available in each of Single, Double, and Quad-Speed modes. These filters have been designed to accommodate a variety of musical tastes and styles. The FILT_SEL bit is used to select which filter is used (see the control port section for more details). 28 DS514F2 CS4382 When in Stand-Alone Mode, only the “fast” roll-off filter is available. Filter specifications can be found in Section 1, and filter response plots can be found in Figures 9 to 32. 6.6 Clock Source Selection The CS4382 has two serial clock and two left/right clock inputs. The SDINxCLK bits in the control port allow the user to set which SCLK/LRCK pair is used to latch the data for each SDINx pin. The clocks applied to LRCK1 and LRCK2 must be derived from the same MCLK and must be exact frequency multiples of each other as specified in the “Switching Characteristics” on page 9. When using both SCLK1/LRCK1 and SCLK2/LRCK2, if either SCLK/LRCK pair loses synchronization then both SCLK/LRCK pairs will go through a retime period where the device is re-evaluating clock ratios. During the retime period all DAC pairs are temporarily inactive, outputs are muted, and the mute control pins will go active according to the MUTEC register. If unused, SCLK2 and LRCK2 should be tied static low and SDINx bits should all be set to SCLK1/LRCK1. In Stand-Alone Mode, all DAC pairs use SCLK1 and LRCK1 for timing and SCLK2/LRCK2 should be tied to ground. 6.7 Using DSD Mode In Stand-Alone Mode, DSD operation is selected by holding DSD_EN(LRCK1) high and applying the DSD data and clocks to the appropriate pins. The M2:0 pins set the expected DSD rate and MCLK ratio. In Control Port Mode, the FM bits set the device into DSD Mode (DSD_EN pin is not required to be held high). The DIF register then controls the expected DSD rate and MCLK ratio. To access the full range of DSD clocking modes (other than 64x DSD 4x MCLK and 128x DSD 2x MCLK) the following additional register sequence needs to be written: 99h to register 00h 80h to register 1Ah 00h to register 00h When exiting DSD Mode the following additional sequence needs to be written: 99h to register 00h 00h to register 1Ah 00h to register 00h During DSD operation, the PCM related pins should either be tied low or remain active with clocks (except LRCK1 in Stand-Alone Mode). When the DSD related pins are not being used they should either be tied static low, or remain active with clocks (except M3 in Stand-Alone Mode). 7. CONTROL PORT INTERFACE The control port is used to load all the internal settings. The operation of the control port may be completely asynchronous with the audio sample rate. However, to avoid potential interference problems, the control port pins should remain static if no operation is required. The CS4382 has MAP auto increment capability, enabled by the INCR bit in the MAP register, which is the MSB. If INCR is 0, then the MAP will stay constant for successive writes. If INCR is set to 1, then MAP will auto increment after each byte is written from register 01h to 08h and then from 09h and 11h, allowing block reads or writes of successive registers in two separate sections (the counter will not auto-increment to register 09h from register 08h). DS514F2 29 CS4382 7.1 Enabling the Control Port On the CS4382 the control port pins are shared with stand-alone configuration pins. To enable the control port, the user must set the CPEN bit. This is done by performing a I²C or SPI write. Once the control port is enabled, these pins are dedicated to control port functionality. To prevent audible artifacts, the CPEN bit (see Section 4.1.1) should be set prior to the completion of the Stand-Alone power-up sequence, approximately 1024 LRCK cycles. Writing this bit will halt the Stand-Alone power-up sequence and initialize the control port to its default settings. Note, the CP_EN bit can be set any time after RST goes high; however, setting this bit after the Stand-Alone power-up sequence has completed can cause audible artifacts. 7.2 Format Selection The control port has 2 formats: SPI and I²C, with the CS4382 operating as a slave device. If I²C operation is desired, AD0/CS should be tied to VLC or GND. If the CS4382 ever detects a high to low transition on AD0/CS after power-up and after the control port is activated, SPI format will be selected. 7.3 I²C Format In I²C Format, SDA is a bidirectional data line. Data is clocked into and out of the part by the clock, SCL, with a clock to data relationship as shown in Figure 7. The receiving device should send an acknowledge (ACK) after each byte received. There is no CS pin. Pin AD0 forms the partial chip address and should be tied to VLC or GND as required. The upper 6 bits of the 7 bit address field must be 001100. Note: MCLK is required during all I²C transactions. Please see “References” on page 40 to obtain additional information on the I²C Bus specification or visit http://www.semiconductors.philips.com. 7.3.1 Writing in I²C Format To communicate with the CS4382, initiate a START condition of the bus. Next, send the chip address. The eighth bit of the address byte is the R/W bit (low for a write). The next byte is the Memory Address Pointer, MAP, which selects the register to be read or written. The MAP is then followed by the data to be written. To write multiple registers, continue providing a clock and data, waiting for the CS4382 to acknowledge between each byte. To end the transaction, send a STOP condition. 7.3.2 Reading in I²C Format To communicate with the CS4382, initiate a START condition of the bus. Next, send the chip address. The eighth bit of the address byte is the R/W bit (high for a read). The contents of the register pointed to by the MAP will be output after the chip address. To read multiple registers, continue providing a clock and issue an ACK after each byte. To end the transaction, send a STOP condition. 7.4 SPI Format In SPI format, CS is the CS4382 chip select signal, CCLK is the control port bit clock, CDIN is the input data line from the microcontroller and the chip address is 0011000. CS, CCLK and CDIN are all inputs and data is clocked in on the rising edge of CCLK. Note: The CS4382 is write-only when in SPI format. 30 DS514F2 CS4382 7.4.1 Writing in SPI Figure 8 shows the operation of the control port in SPI format. To write to a register, bring CS low. The first 7 bits on CDIN form the chip address and must be 0011000. The eighth bit is a read/write indicator (R/W), which must be low to write. The next 8 bits form the Memory Address Pointer (MAP), which is set to the address of the register that is to be updated. The next 8 bits are the data which will be placed into register designated by the MAP. To write multiple registers, keep CS low and continue providing clocks on CCLK. End the read transaction by setting CS high. N o te 1 SDA 001100 ADDR AD0 R /W ACK D ATA 1 -8 ACK DATA 1 -8 ACK SCL S ta rt S to p N o te : If o p e ra tio n is a w rite , th is b y te c o n ta in s th e M e m o ry A d d re s s P o in te r, M A P . Figure 7. Control Port Timing, I²C Format CS CCLK C H IP ADDRESS C D IN 0011000 R /W MAP MSB DATA LSB b y te 1 M A P = M e m o r y A d d r e s s P o in te r b y te n Figure 8. Control Port Timing, SPI Format 7.5 Memory Address Pointer (MAP) 7 INCR 0 6 Reserved 0 5 Reserved 0 4 MAP4 0 3 MAP3 0 2 MAP2 0 1 MAP1 0 0 MAP0 0 7.5.1 INCR (Auto Map Increment Enable) Default = ‘0’ 0 - Disabled 1 - Enabled Note: When Auto Map Increment is enabled, the register must be written it two separate blocks: from register 01h to 08h and then from 09h and 11h. The counter will not auto-increment to register 09h from register 08h DS514F2 31 CS4382 7.5.2 MAP4-0 (Memory Address Pointer) Default = ‘00000’ 32 DS514F2 CS4382 8. FILTER PLOTS 0 0 20 20 Amplitude (dB) Amplitude (dB) 40 40 60 60 80 80 100 100 120 120 0.4 0.5 0.6 0.7 0.8 Frequency(normalized to Fs) 0.9 1 0.4 0.42 0.44 0.46 0.48 0.5 0.52 Frequency(normalized to Fs) 0.54 0.56 0.58 0.6 Figure 9. Single-Speed (fast) Stopband Rejection 0 Figure 10. Single-Speed (fast) Transition Band 0.02 1 0.015 2 0.01 3 0.005 Amplitude (dB) Amplitude (dB) 4 5 0 6 0.005 7 0.01 8 0.015 9 10 0.45 0.46 0.47 0.48 0.49 0.5 0.51 Frequency(normalized to Fs) 0.52 0.53 0.54 0.55 0.02 0 0.05 0.1 0.15 0.2 0.25 0.3 Frequency(normalized to Fs) 0.35 0.4 0.45 0.5 Figure 11. Single-Speed (fast) Transition Band (detail) 0 Figure 12. Single-Speed (fast) Passband Ripple 0 20 20 Amplitude (dB) 40 60 Amplitude (dB) 0.4 0.5 0.6 0.7 0.8 Frequency(normalized to Fs) 0.9 1 40 60 80 80 100 100 120 120 0.4 0.42 0.44 0.46 0.48 0.5 0.52 Frequency(normalized to Fs) 0.54 0.56 0.58 0.6 Figure 13. Single-Speed (slow) Stopband Rejection Figure 14. Single-Speed (slow) Transition Band DS514F2 33 CS4382 0 0.02 1 0.015 2 0.01 3 0.005 Amplitude (dB) Amplitude (dB) 4 5 0 6 0.005 7 0.01 8 0.015 9 10 0.45 0.02 0.46 0.47 0.48 0.49 0.5 0.51 Frequency(normalized to Fs) 0.52 0.53 0.54 0.55 0 0.05 0.1 0.15 0.2 0.25 0.3 Frequency(normalized to Fs) 0.35 0.4 0.45 0.5 Figure 15. Single-Speed (slow) Transition Band (detail) 0 Figure 16. Single-Speed (slow) Passband Ripple 0 20 20 Amplitude (dB) Amplitude (dB) 40 40 60 60 80 80 100 100 120 120 0.4 0.5 0.6 0.7 0.8 Frequency(normalized to Fs) 0.9 1 0.4 0.42 0.44 0.46 0.48 0.5 0.52 Frequency(normalized to Fs) 0.54 0.56 0.58 0.6 Figure 17. Double-Speed (fast) Stopband Rejection 0 Figure 18. Double-Speed (fast) Transition Band 0.02 1 0.015 2 0.01 3 Amplitude (dB) 5 Amplitude (dB) 4 0.005 0 6 0.005 7 0.01 8 9 0.015 10 0.45 0.46 0.47 0.48 0.49 0.5 0.51 Frequency(normalized to Fs) 0.52 0.53 0.54 0.55 0.02 0 0.05 0.1 0.15 0.2 0.25 0.3 Frequency(normalized to Fs) 0.35 0.4 0.45 0.5 Figure 19. Double-Speed (fast) Transition Band (detail) Figure 20. Double-Speed (fast) Passband Ripple 34 DS514F2 CS4382 0 0 20 20 Amplitude (dB) Amplitude (dB) 40 40 60 60 80 80 100 100 120 120 0.2 0.3 0.4 0.5 0.6 0.7 Frequency(normalized to Fs) 0.8 0.9 1 0.2 0.3 0.4 0.5 0.6 Frequency(normalized to Fs) 0.7 0.8 Figure 21. Double-Speed (slow) Stopband Rejection 0 Figure 22. Double-Speed (slow) Transition Band 0.02 1 0.015 2 0.01 3 0.005 Amplitude (dB) Amplitude (dB) 4 5 0 6 0.005 7 0.01 8 0.015 9 0.02 10 0.45 0.46 0.47 0.48 0.49 0.5 0.51 Frequency(normalized to Fs) 0.52 0.53 0.54 0.55 0 0.05 0.1 0.15 0.2 Frequency(normalized to Fs) 0.25 0.3 0.35 Figure 23. Double-Speed (slow) Transition Band (detail) 0 Figure 24. Double-Speed (slow) Passband Ripple 0 20 20 40 Amplitude (dB) Amplitude (dB) 40 60 60 80 80 100 100 120 120 0.2 0.3 0.4 0.5 0.6 0.7 Frequency(normalized to Fs) 0.8 0.9 1 0.2 0.3 0.4 0.5 0.6 Frequency(normalized to Fs) 0.7 0.8 Figure 25. Quad-Speed (fast) Stopband Rejection Figure 26. Quad-Speed (fast) Transition Band DS514F2 35 CS4382 0 0.2 1 0.15 2 0.1 3 0.05 Amplitude (dB) Amplitude (dB) 0.05 0.1 0.15 0.2 4 5 0 6 7 8 9 10 0.45 0.46 0.47 0.48 0.49 0.5 0.51 Frequency(normalized to Fs) 0.52 0.53 0.54 0.55 0 0.05 0.1 0.15 Frequency(normalized to Fs) 0.2 0.25 Figure 27. Quad-Speed (fast) Transition Band (detail) 0 Figure 28. Quad-Speed (fast) Passband Ripple 0 20 20 Amplitude (dB) Amplitude (dB) 40 40 60 60 80 80 100 100 120 120 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Frequency(normalized to Fs) 0.8 0.9 1 0.1 0.2 0.3 0.4 0.5 0.6 Frequency(normalized to Fs) 0.7 0.8 0.9 Figure 29. Quad-Speed (slow) Stopband Rejection 0 Figure 30. Quad-Speed (slow) Transition Band 0.02 1 0.015 2 0.01 3 0.005 Amplitude (dB) Amplitude (dB) 4 5 0 6 0.005 7 0.01 8 0.015 9 10 0.45 0.46 0.47 0.48 0.49 0.5 0.51 Frequency(normalized to Fs) 0.52 0.53 0.54 0.55 0.02 0 0.02 0.04 0.06 0.08 Frequency(normalized to Fs) 0.1 0.12 Figure 31. Quad-Speed (slow) Transition Band (detail) Figure 32. Quad-Speed (slow) Passband Ripple 36 DS514F2 CS4382 9. DIAGRAMS LRCK SCLK Left Channel Right Channel SDINx MSB -1 -2 -3 -4 -5 +5 +4 +3 +2 +1 LSB MSB -1 -2 -3 -4 +5 +4 +3 +2 +1 LSB Figure 33. Format 0 - Left Justified up to 24-bit Data LRCK SCLK Left Channel Right Channel SDINx MSB -1 -2 -3 -4 -5 +5 +4 +3 +2 +1 LSB MSB -1 -2 -3 -4 +5 +4 +3 +2 +1 LSB Figure 34. Format 1 - I²S up to 24-bit Data LRCK Left Channel Right Channel SCLK SDINx 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 32 clocks Figure 35. Format 2 - Right Justified 16-bit Data LRCK Left Channel Right Channel SCLK SDINx 0 23 22 21 20 19 18 76543210 23 22 21 20 19 18 76543210 32 clocks Figure 36. Format 3 - Right Justified 24-bit Data DS514F2 37 CS4382 LRCK Right Channel Left Channel SCLK SDINx 10 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 32 clocks Figure 37. Format 4 - Right Justified 20-bit Data LRCK Left Channel Right Channel SCLK SDINx 10 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 32 clocks Figure 38. Format 5 - Right Justified 18-bit Data Gain dB T1=50 µs 0dB T2 = 15 µs -10dB F1 3.183 kHz F2 Frequency 10.61 kHz Figure 39. De-Emphasis Curve L Channel Pair x Control R DAC AOUTAx+ AOUTAx- SDINx DAC AOUTBx+ AOUTBx- Figure 40. Channel Pair Routing Diagram (x = Channel Pair 1, 2, 3, or 4) 38 DS514F2 CS4382 Left Channel Audio Data A Channel Volume Control MUTE Aout Ax SDINx Σ Σ Right Channel Audio Data B Channel Volume Control MUTE AoutBx Figure 41. ATAPI Block Diagram (x = channel pair 1, 2, 3, or 4) Figure 42. Recommended Output Filter DS514F2 39 CS4382 10.PARAMETER DEFINITIONS Total Harmonic Distortion + Noise (THD+N) The ratio of the rms value of the signal to the rms sum of all other spectral components over the specified bandwidth (typically 10 Hz to 20 kHz), including distortion components. Expressed in decibels. Dynamic Range The ratio of the full scale rms value of the signal to the rms sum of all other spectral components over the specified bandwidth. Dynamic range is a signal-to-noise measurement over the specified bandwidth made with a -60 dBFS signal. 60 dB is then added to the resulting measurement to refer the measurement to full scale. This technique ensures that the distortion components are below the noise level and do not effect the measurement. This measurement technique has been accepted by the Audio Engineering Society, AES171991, and the Electronic Industries Association of Japan, EIAJ CP-307. Interchannel Isolation A measure of crosstalk between the left and right channels. Measured for each channel at the converter's output with all zeros to the input under test and a full-scale signal applied to the other channel. Units in decibels. Interchannel Gain Mismatch The gain difference between left and right channels. Units in decibels. Gain Error The deviation from the nominal full scale analog output for a full scale digital input. Gain Drift The change in gain value with temperature. Units in ppm/°C. 11.REFERENCES 1. How to Achieve Optimum Performance from Delta-Sigma A/D & D/A Converters by Steven Harris. Paper presented at the 93rd Convention of the Audio Engineering Society, October 1992. 2. CDB4382 Evaluation Board Datasheet 3. Design Notes for a 2-Pole Filter with Differential Input by Steven Green. Cirrus Logic Application Note AN48, available at http:www.cirrus.com 4. The I²C-Bus Specification: Version 2.0 Philips Semiconductors, December 1998. http://www.semiconductors.philips.com 40 DS514F2 CS4382 12.PACKAGE DIMENSIONS 48L LQFP PACKAGE DRAWING E E1 D D1 1 e ∝ B A A1 L INCHES NOM 0.055 0.004 0.009 0.354 0.28 0.354 0.28 0.020 0.24 4° DIM A A1 B D D1 E E1 e* L µ MIN --0.002 0.007 0.343 0.272 0.343 0.272 0.016 0.018 0.000° MAX 0.063 0.006 0.011 0.366 0.280 0.366 0.280 0.024 0.030 7.000° MIN --0.05 0.17 8.70 6.90 8.70 6.90 0.40 0.45 0.00° MILLIMETERS NOM 1.40 0.10 0.22 9.0 BSC 7.0 BSC 9.0 BSC 7.0 BSC 0.50 BSC 0.60 4° MAX 1.60 0.15 0.27 9.30 7.10 9.30 7.10 0.60 0.75 7.00° * Nominal pin pitch is 0.50 mm Controlling dimension is mm. JEDEC Designation: MS022 DS514F2 41 CS4382 13.ORDERING INFORMATION Product Description Package Pb-Free YES - Grade Temp Range Container Tray Tape and Reel - Order # CS4382-KQZ CS4382-KQZR CDB4382 114 dB, 192 kHz 848-pin CS4382 channel D/A Converter LQFP CDB4382 CS4382 Evaluation Board Commercial -10°C to +70°C - 14.REVISION HISTORY Release Changes Removed -BQ ordering option Corrected specifications for Full Scale Differential Output Voltage Updated Table 2 on page 18 Updated Section 6.7 “Using DSD Mode” on page 29 Updated legal text Corrected DAC Pair Disable register description in Section 4.1.4 Added note to Digital Interface Format in Section 4.2.1 Added PCM mode format changeable only in reset to Section 6.2 Updated Package Thermal Resistance in “Power and Thermal Characteristics” on page 6 F1 F2 Contacting Cirrus Logic Support For all product questions and inquiries, contact a Cirrus Logic Sales Representative. To find the one nearest you, go to www.cirrus.com. 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All other brand and product names in this document may be trademarks or service marks of their respective owners. I²C is a registered trademark of Philips Semiconductor. SPI is a trademark of Motorola, Inc. 42 DS514F2