Cirrus-logic CS4382 Manuale Utente

Copyright © Cirrus Logic, Inc. 2008(All Rights Reserved)http://www.cirrus.com114 dB, 192 kHz 8-Channel D/A ConverterFeatures 24-bit Conversion Up to

10 DS514F2CS4382DSD - 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=30pF) Note:

DS514F2 11CS4382SWITCHING 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

12 DS514F2CS4382SWITCHING 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, Logi

DS514F2 13CS43822. TYPICAL CONNECTION DIAGRAM Figure 5. Typical Connection Diagram Control PortDigitalAudioSourceVLSCS4382MCLKVDAOUTA1+108320.1 µF+

14 DS514F2CS4382DigitalAudioSourceVLSCS4382MCLKVDAOUTA1+108320.1 µF+1 µF+3.3 V to +5 VSDIN191 µF0.1 µF++2021FILT+VQ76LRCK1SCLK1SDIN3SDIN239400.1 µF47

DS514F2 15CS43823. REGISTER QUICK REFERENCEAddrFunction7654321001h Mode Control 1 CPEN FREEZE MCLKDIV DAC4_DIS DAC3_DIS DAC2_DIS DAC1_DIS PDNdefault00

16 DS514F2CS43824. REGISTER DESCRIPTIONNote: All registers are read/write in I²C Mode and write-only in SPI, unless otherwise noted.4.1 Mode Control 1

DS514F2 17CS43824.1.5 Power Down (PDN)Default = 10 - Disabled1 - EnabledFunction:The entire device will enter a low-power state when this function is

18 DS514F2CS4382DSD Mode: The relationship between the oversampling ratio of the DSD audio data and the requiredMaster clock to DSD data rate is defin

DS514F2 19CS4382Soft RampSoft Ramp allows level changes, both muting and attenuation, to be implemented by incrementally ramp-ing, in 1/8 dB steps, fr

2 DS514F2CS4382TABLE OF CONTENTS1. CHARACTERISTICS AND SPECIFICATIONS ...

20 DS514F2CS43824.3.5 Auto-Mute (AMUTE)Default = 10 - Disabled1 - EnabledFunction:The Digital-to-Analog converter output will mute following the rece

DS514F2 21CS4382Selects the appropriate digital filter to maintain the standard 15 ms/50 ms digital de-emphasis filter re-sponse at 32, 44.1 or 48 kHz

22 DS514F2CS43824.6.2 ATAPI Channel Mixing and Muting (ATAPI) Default = 01001 - AOUTAx=aL, AOUTBx=bR (Stereo)Function:The CS4382 implements the channe

DS514F2 23CS43824.6.3 Functional Mode (FM)Default = 0000 - Single-Speed Mode (4 to 50 kHz sample rates)01 - Double-Speed Mode (50 to 100 kHz sample ra

24 DS514F2CS43824.8 Chip Revision (Address 12h)4.8.1 Part Number ID (PART) [Read Only]1010 - CS4382Function:This read-only register can be used to id

DS514F2 25CS43825. PIN DESCRIPTIONPin Name # Pin DescriptionVD 4Digital Power (Input) - Positive power supply for the digital section. Refer to the Re

26 DS514F2CS4382MUTEC1MUTEC2344122Mute Control (Output) - The Mute Control pins go high during power-up initialization, reset, muting, power-down or i

DS514F2 27CS4382Mode (sample-rate range)Sample Rate(kHz)MCLK (MHz)Control port only modesMCLK Ratio 256x 384x 512x 768x* 1024x*Single-Speed (4 to 50 k

28 DS514F2CS43826. APPLICATIONS6.1 Grounding and Power Supply DecouplingAs with any high resolution converter, the CS4382 requires careful attention t

DS514F2 29CS4382When in Stand-Alone Mode, only the “fast” roll-off filter is available. Filter specifications can be found in Section 1, and filter re

DS514F2 3CS43826.2 PCM Mode Select ...

30 DS514F2CS43827.1 Enabling the Control Port On the CS4382 the control port pins are shared with stand-alone configuration pins. To enable the contro

DS514F2 31CS43827.4.1 Writing in SPIFigure 8 shows the operation of the control port in SPI format. To write to a register, bring CS low. Thefirst 7 b

32 DS514F2CS43827.5.2 MAP4-0 (Memory Address Pointer) Default = ‘00000’

DS514F2 33CS43828. FILTER PLOTS 0.4 0.5 0.6 0.7 0.8 0.91120100806040200Frequency(normalized to Fs)Amplitude (dB)0.4 0.42 0.44 0.46 0.48 0.5 0.52

34 DS514F2CS4382 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.50.020.0150.010.00500.0050.010.0150.02Frequency(normalized to Fs)Amplitude (dB)0.45

DS514F2 35CS4382 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.91120100806040200Frequency(normalized to Fs)Amplitude (dB)0.2 0.3 0.4 0.5 0.6 0.7 0.812010080604020

36 DS514F2CS4382 0.45 0.46 0.47 0.48 0.49 0.5 0.51 0.52 0.53 0.54 0.55109876543210Frequency(normalized to Fs)Amplitude (dB)0 0.05 0.1 0.15 0.2 0

DS514F2 37CS43829. DIAGRAMS LRCKSCLKLeft ChannelRight ChannelSDINx +3 +2 +1+5 +4-1 -2 -3 -4 -5+3 +2 +1+5 +4-1-2 -3 -4MSB LSB MSB

38 DS514F2CS4382 LRCKSCLKLeft ChannelRight ChannelSDINx654321098715 14 13 12 11 1010654321098715 14 13 12 11 1017 16 17 1632 clocks19 18 19 18Figure 3

DS514F2 39CS4382 ΣΣA ChannelVolumeControlAoutAxAoutBxLeft ChannelAudio DataRight ChannelAudio DataBChannelVolumeControlMUTEMUTESDINxFigure 41. ATAP

4 DS514F2CS4382Figure 28. Quad-Speed (fast) Passband Ripple ... 3

40 DS514F2CS438210.PARAMETER DEFINITIONSTotal Harmonic Distortion + Noise (THD+N)The ratio of the rms value of the signal to the rms sum of all other

DS514F2 41CS438212.PACKAGE DIMENSIONSINCHES MILLIMETERSDIM MIN NOM MAX MIN NOM MAXA --- 0.055 0.063 --- 1.40 1.60A1 0.002 0.004 0.006 0.05 0.10 0.15B

42 DS514F2CS438213.ORDERING INFORMATION14.REVISION HISTORYProduct Description Package Pb-Free Grade Temp Range Container Order #CS4382114 dB, 192 kHz

DS514F2 5CS43821. CHARACTERISTICS AND SPECIFICATIONSANALOG CHARACTERISTICS(Full-Scale Output Sine Wave, 997 Hz; Measurement Bandwidth 10 Hz to 20 kHz,

6 DS514F2CS4382ANALOG CHARACTERISTICS(Continued) POWER AND THERMAL CHARACTERISTICS Notes:4. VFS is tested under load RL and includes attenuation du

DS514F2 7CS4382ANALOG FILTER RESPONSE Notes:10. Slow Roll-Off interpolation filter is only available in Control Port Mode.11. Filter response is n

8 DS514F2CS4382DIGITAL CHARACTERISTICS(For KQZ TA = -10°C to +70°C; VLC = VLS = 1.8 V to 5.5 V)ABSOLUTE MAXIMUM RATINGS(GND = 0 V; all voltages with r

DS514F2 9CS4382SWITCHING 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) Notes:15