Cirrus-logic CS4351 Manuale Utente

Copyright © Cirrus Logic, Inc. 2005(All Rights Reserved)http://www.cirrus.com192 kHz Stereo DAC with 2 Vrms Line OutFeatures! Multi-Bit Delta-Sigma Mo

10 DS566F1CS4351SWITCHING SPECIFICATIONS - SERIAL AUDIO INTERFACE Parameters Symbol Min Max UnitsMCLK Frequency 1.024 51.2 MHzMCLK Duty Cycle 4

DS566F1 11CS4351Switching Characteristics - Control Port - I²C® Format(Inputs: Logic 0 = GND, Logic 1 = VL, CL=20pF)Notes:7. Data must be held for suf

12 DS566F1CS4351SWITCHING CHARACTERISTICS - CONTROL PORT - SPI™ FORMAT (Inputs: Logic 0 = GND, Logic 1 = VL, CL=20pF)Notes:8. tspi only needed before

DS566F1 13CS4351DIGITAL CHARACTERISTICSPOWER AND THERMAL CHARACTERISTICS Notes:11. Current consumption increases with increasing FS and increasing MCL

14 DS566F1CS43513. TYPICAL CONNECTION DIAGRAM16DigitalAudioSourceVLGNDCS4351MCLKVDAOUTA1170.1 µF+10 µF+3.3 V *µ C/ModeConfiguration9108SDIN2DIF1(SCL/C

DS566F1 15CS43514. APPLICATIONS4.1 Sample Rate Range/Operational Mode DetectThe device operates in one of three operational modes. The allowed sample

16 DS566F1CS43514.3 Digital Interface FormatThe device will accept audio samples in 1 of 4 digital interface formats in Stand-Alone mode, as illustrat

DS566F1 17CS4351least 32 cycles per LRCK period in format 2, 48 cycles in format 3, 40 cycles in format 4, and 36 cyclesin format 5. 4.4 De-Emphasis C

18 DS566F1CS43514.4.1 Stand-Alone ModeWhen pulled to VL the DEM pin activates the 44.1 kHz de-emphasis filter. When pulled to GND the DEMpin turns off

DS566F1 19CS43514.6.2 Power-DownTo prevent audible transients at power-down, the device must first enter its power-down state. When thisoccurs, audio

2 DS566F1CS4351TABLE OF CONTENTS1. PIN DESCRIPTION ...

20 DS566F1CS43514.9 Control Port InterfaceThe control port is used to load all the internal register settings (see Section 6). The operation of the co

DS566F1 21CS43514.9.2.2 I²C ReadTo read from the device, follow the procedure below while adhering to the control port Switching Specifica-tions.1. In

22 DS566F1CS43514. Write the desired data to the register pointed to by the MAP.5. If the INCR bit (see Section 4.9.1) is set to 1, repeat the previou

DS566F1 23CS43515. REGISTER QUICK REFERENCEAddr Function 7 6 5 4 3 2 1 01h Chip ID PART4 PART3 PART2 PART1 PART0 REV2 REV1 REV0default 1 1 1 1 1 - - -

24 DS566F1CS43516. REGISTER DESCRIPTION** All register access is R/W unless specified otherwise**6.1 Chip ID - Register 01h Function:This register is

DS566F1 25CS43516.2.3 Functional Mode (FM) Bits 1-0Default = 0000 - Auto speed mode detect01 - Single-Speed Mode (4 to 50 kHz sample rates)10 - Double

26 DS566F1CS43516.3.4 ATAPI Channel Mixing and Muting (ATAPI3:0) Bits 3-0Default = 1001 - AOUTA=aL, AOUTB=bR (Stereo)Function:The CS4351 implements th

DS566F1 27CS43516.4 Mute Control - Register 04h 6.4.1 Auto-Mute (AMUTE) Bit 7Function:When set to 1 (default), the Digital-to-Analog converter output

28 DS566F1CS43516.5.1 Digital Volume Control (VOL7:0) Bits 7-0Default = 00h (0 dB) Function:The Digital Volume Control registers allow independent con

DS566F1 29CS4351Soft Ramp and Zero CrossSoft Ramp and Zero Cross Enable dictate that signal level changes, either by attenuation changes or mut-ing, w

DS566F1 3CS43516.3.4 ATAPI Channel Mixing and Muting (ATAPI3:0) Bits 3-0 ... 266.4 Mute Control - Regi

30 DS566F1CS43516.7.1 Power Down (PDN) Bit 7Function:When set to 1 (default), the entire device will enter a low-power state and the contents of the c

DS566F1 31CS43517. DIGITAL FILTER RESPONSE PLOTS 0.4 0.5 0.6 0.7 0.8 0.91−120−100−80−60−40−200Frequency(normalized to Fs)Amplitude (dB)0.4 0.42 0.44

32 DS566F1CS4351 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5−0.02−0.015−0.01−0.00500.0050.010.0150.02Frequency(normalized to Fs)Amplitude (dB)0.4

DS566F1 33CS4351 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 0.8120100806040200F

34 DS566F1CS4351 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 0.250

DS566F1 35CS43518. PARAMETER DEFINITIONSTotal Harmonic Distortion + Noise (THD+N)The ratio of the rms value of the signal to the rms sum of all other

36 DS566F1CS43519. PACKAGE DIMENSIONS Notes: 1. “D” and “E1” are reference datums and do not included mold flash or protrusions, but do include mold

DS566F1 37CS435110.ORDERING INFORMATION11.REVISION HISTORYProduct Description Package Pb-Free Grade Temp Range Container Order #CS4351192 kHz Stereo D

4 DS566F1CS4351Figure 29.Quad-Speed (fast) Stopband Rejection... 33F

DS566F1 5CS43511. PIN DESCRIPTION Pin Name # Pin DescriptionSDIN 1 Serial Audio Data Input (Input) - Input for two’s complement serial audio data.

6 DS566F1CS43512. CHARACTERISTICS AND SPECIFICATIONS (Min/Max performance characteristics and specifications are guaranteed over the Specified Operati

DS566F1 7CS4351DAC ANALOG CHARACTERISTICS(Test conditions (unless otherwise specified): input test signal is a 997 Hz sine wave at 0 dBFS; measurement

8 DS566F1CS4351COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE(The filter characteristics have been normalized to the sample rate (Fs) and

DS566F1 9CS4351COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE(Continued)Notes:2. Slow Roll-off interpolation filter is only available in