SLASE12A July   2014  – October 2014 PCM5242

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Simplified System Diagram
  5. Revision History
  6. Pin Configuration and Functions
    1. 6.1 Control Mode Effect On Pin Assignments
    2. 6.2 Pin Assignments
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Handling Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Switching Characteristics
    7. 7.7 Timing Requirements: SCK Input
    8. 7.8 Timing Requirements: PCM Audio Data
    9. 7.9 Timing Requirements: XSMT
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Terminology
    4. 8.4 Audio Data Interface
      1. 8.4.1 Audio Serial Interface
      2. 8.4.2 PCM Audio Data Formats
      3. 8.4.3 Zero Data Detect
    5. 8.5 XSMT Pin (Soft Mute / Soft Un-Mute)
    6. 8.6 Audio Processing
      1. 8.6.1 PCM5242 Audio Processing Options
        1. 8.6.1.1 Overview
        2. 8.6.1.2 miniDSP Instruction Register
        3. 8.6.1.3 Digital Output
        4. 8.6.1.4 Software
      2. 8.6.2 Interpolation Filter
      3. 8.6.3 Fixed Audio Processing Flow (Program 5)
        1. 8.6.3.1 Processing Blocks - Detailed Descriptions
        2. 8.6.3.2 Biquad Section
        3. 8.6.3.3 Dynamic Range Compression
        4. 8.6.3.4 Stereo Mixer
        5. 8.6.3.5 Stereo Multiplexer
        6. 8.6.3.6 Mono Mixer
        7. 8.6.3.7 Master Volume Control
        8. 8.6.3.8 Miscellaneous Coefficients
    7. 8.7 DAC and Differential Analog Outputs
      1. 8.7.1 Analog Outputs
      2. 8.7.2 Choosing Between VREF and VCOM Modes
        1. 8.7.2.1 Voltage Reference and Output Levels
        2. 8.7.2.2 Mode Switching Sequence, From VREF Mode to VCOM Mode
      3. 8.7.3 Digital Volume Control
        1. 8.7.3.1 Emergency Ramp Down
      4. 8.7.4 Analog Gain Control
    8. 8.8 Reset and System Clock Functions
      1. 8.8.1 Clocking Overview
      2. 8.8.2 Clock Slave Mode With Master Clock (SCK) Input (4 Wire I2S)
      3. 8.8.3 Clock Slave Mode with BCK PLL to Generate Internal Clocks (3-Wire PCM)
      4. 8.8.4 Clock Generation Using The PLL
      5. 8.8.5 PLL Calculation
        1. 8.8.5.1 Examples:
          1. 8.8.5.1.1 Recommended PLL settings
      6. 8.8.6 Clock Master Mode from Audio Rate Master Clock
      7. 8.8.7 Clock Master from a Non-Audio Rate Master Clock
    9. 8.9 Device Functional Modes
      1. 8.9.1 Choosing A Control Mode
        1. 8.9.1.1 Software Control
          1. 8.9.1.1.1 SPI Interface
            1. 8.9.1.1.1.1 Register Read/Write Operation
          2. 8.9.1.1.2 I2C Interface
            1. 8.9.1.1.2.1 Slave Address
            2. 8.9.1.1.2.2 Register Address Auto-Increment Mode
            3. 8.9.1.1.2.3 Packet Protocol
            4. 8.9.1.1.2.4 Write Register
            5. 8.9.1.1.2.5 Read Register
            6. 8.9.1.1.2.6 Timing Characteristics
      2. 8.9.2 Choosing Between VREF and VCOM Modes
  9. Applications and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 High Fidelity Smartphone Application
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Initialization Script
        3. 9.2.1.3 Application Performance Plot
  10. 10Power Supply Recommendations
    1. 10.1 Power Supply Distribution and Requirements
    2. 10.2 Recommended Powerdown Sequence
      1. 10.2.1 Planned Shutdown
      2. 10.2.2 Unplanned Shutdown
    3. 10.3 External Power Sense Undervoltage Protection mode (supported only when DVDD = 3.3V)
    4. 10.4 PCM5242 Power Modes
      1. 10.4.1 Setting Digital Power Supplies and I/O Voltage Rails
      2. 10.4.2 Power Save Modes
      3. 10.4.3 Power Save Parameter Programming
  11. 11Layout
    1. 11.1 Layout Guidelines
  12. 12Programming and Registers Reference
    1. 12.1 Coefficient Data Formats
    2. 12.2 PCM5242 Register Map
      1. 12.2.1 Detailed Register Descriptions
        1. 12.2.1.1 Register Map Summary
          1. 12.2.1.1.1 Register Map Summary
        2. 12.2.1.2 Page 0 Registers
          1. 12.2.1.2.1  Page 0 / Register 1
          2. 12.2.1.2.2  Page 0 / Register 2
          3. 12.2.1.2.3  Page 0 / Register 3
          4. 12.2.1.2.4  Page 0 / Register 4
          5. 12.2.1.2.5  Page 0 / Register 6
          6. 12.2.1.2.6  Page 0 / Register 7
          7. 12.2.1.2.7  Page 0 / Register 8
          8. 12.2.1.2.8  Page 0 / Register 9
          9. 12.2.1.2.9  Page 0 / Register 10
          10. 12.2.1.2.10 Page 0 / Register 12
          11. 12.2.1.2.11 Page 0 / Register 13
          12. 12.2.1.2.12 Page 0 / Register 14
          13. 12.2.1.2.13 Page 0 / Register 18
          14. 12.2.1.2.14 Page 0 / Register 19
          15. 12.2.1.2.15 Page 0 / Register 20
          16. 12.2.1.2.16 Page 0 / Register 21
          17. 12.2.1.2.17 Page 0 / Register 22
          18. 12.2.1.2.18 Page 0 / Register 23
          19. 12.2.1.2.19 Page 0 / Register 24
          20. 12.2.1.2.20 Page 0 / Register 27
          21. 12.2.1.2.21 Page 0 / Register 28
          22. 12.2.1.2.22 Page 0 / Register 29
          23. 12.2.1.2.23 Page 0 / Register 30
          24. 12.2.1.2.24 Page 0 / Register 32
          25. 12.2.1.2.25 Page 0 / Register 33
          26. 12.2.1.2.26 Page 0 / Register 34
          27. 12.2.1.2.27 Page 0 / Register 35
          28. 12.2.1.2.28 Page 0 / Register 36
          29. 12.2.1.2.29 Page 0 / Register 37
          30. 12.2.1.2.30 Page 0 / Register 40
          31. 12.2.1.2.31 Page 0 / Register 41
          32. 12.2.1.2.32 Page 0 / Register 42
          33. 12.2.1.2.33 Page 0 / Register 43
          34. 12.2.1.2.34 Page 0 / Register 44
          35. 12.2.1.2.35 Page 0 / Register 59
          36. 12.2.1.2.36 Page 0 / Register 60
          37. 12.2.1.2.37 Page 0 / Register 61
          38. 12.2.1.2.38 Page 0 / Register 62
          39. 12.2.1.2.39 Page 0 / Register 63
          40. 12.2.1.2.40 Page 0 / Register 64
          41. 12.2.1.2.41 Page 0 / Register 65
          42. 12.2.1.2.42 Page 0 / Register 80
          43. 12.2.1.2.43 Page 0 / Register 81
          44. 12.2.1.2.44 Page 0 / Register 82
          45. 12.2.1.2.45 Page 0 / Register 83
          46. 12.2.1.2.46 Page 0 / Register 84
          47. 12.2.1.2.47 Page 0 / Register 85
          48. 12.2.1.2.48 Page 0 / Register 86
          49. 12.2.1.2.49 Page 0 / Register 87
          50. 12.2.1.2.50 Page 0 / Register 90
          51. 12.2.1.2.51 Page 0 / Register 91
          52. 12.2.1.2.52 Page 0 / Register 92
          53. 12.2.1.2.53 Page 0 / Register 93
          54. 12.2.1.2.54 Page 0 / Register 94
          55. 12.2.1.2.55 Page 0 / Register 95
          56. 12.2.1.2.56 Page 0 / Register 108
          57. 12.2.1.2.57 Page 0 / Register 109
          58. 12.2.1.2.58 Page 0 / Register 114
          59. 12.2.1.2.59 Page 0 / Register 115
          60. 12.2.1.2.60 Page 0 / Register 118
          61. 12.2.1.2.61 Page 0 / Register 119
          62. 12.2.1.2.62 Page 0 / Register 120
          63. 12.2.1.2.63 Page 0 / Register 121
          64. 12.2.1.2.64 Page 0 / Register 122
          65. 12.2.1.2.65 Page 0 / Register 123
          66. 12.2.1.2.66 Page 0 / Register 124
          67. 12.2.1.2.67 Page 0 / Register 125
        3. 12.2.1.3 Page 1 Registers
          1. 12.2.1.3.1 Page 1 / Register 1
          2. 12.2.1.3.2 Page 1 / Register 2
          3. 12.2.1.3.3 Page 1 / Register 5
          4. 12.2.1.3.4 Page 1 / Register 6
          5. 12.2.1.3.5 Page 1 / Register 7
          6. 12.2.1.3.6 Page 1 / Register 8
          7. 12.2.1.3.7 Page 1 / Register 9
        4. 12.2.1.4 Page 44 Registers
          1. 12.2.1.4.1 Page 44 / Register 1
        5. 12.2.1.5 Page 253 Registers
          1. 12.2.1.5.1 Page 253 / Register 63
          2. 12.2.1.5.2 Page 253 / Register 64
      2. 12.2.2 PLL Tables for Software Controlled Devices
  13. 13Device and Documentation Support
    1. 13.1 Community Resources
    2. 13.2 Trademarks
    3. 13.3 Electrostatic Discharge Caution
  14. 14Mechanical, Packaging, and Orderable Information

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

7 Specifications

7.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
Supply Voltage AVDD, CPVDD, DVDD –0.3 3.9 V
LDOO wtih DVDD at 1.8V –0.3 2.25
Digital Input Voltage DVDD at 1.8V –0.3 2.25
DVDD at 3.3V –0.3 3.9
Analog Input Voltage –0.3 3.9

7.2 Handling Ratings

MIN MAX UNIT
Tstg Storage Temperature –40 125 °C
V(ESD) Electrostatic Discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins(1) –2500 2500 V
Charged device model (CDM), per JEDEC specification JESD22-C101, all pins –1500 1500
(1) Level listed above is the passing level per ANSI, ESDA, and JEDEC JS-001. JEDEC document JEP155 states that 500V HBM allows safe manufacturing with a standard ESD control process.

7.3 Recommended Operating Conditions

MIN NOM MAX UNIT
AVDD Analog power supply voltage range Referenced to AGND(1) VCOM mode 3.0 3.3 3.46 V
VREF mode 3.2 3.3 3.46
DVDD Digital power supply voltage range Referenced to DGND(1) 1.8V DVDD 1.65 1.8 1.95 V
3.3V DVDD 3.1 3.3 3.46
CPVDD Charge pump supply voltage range Referenced to CPGND(1) 3.1 3.3 3.46 V
MCLK Master Clock Frequency 50 MHz
LOL, LOR Stereo line output load resistance 2 10
CLout Digital output load capacitance 10 pF
TJ Operating Junction Temperature Range –25 85 °C
(1) All grounds on board are tied together; they must not differ in voltage by more than 0.2V max, for any combination of ground signals.

7.4 Thermal Information

THERMAL METRIC RHB (32 PINS) UNIT
RθJA Junction-to-ambient thermal resistance 72.2 °C/W
RθJC(top) Junction-to-case(top) thermal resistance 17.5
RθJB Junction-to-board thermal resistance 35.0
ψJT Junction-to-top characterization parameter 0.4
ψJB Junction-to-board characterization parameter 34.5
RθJC(bottom) Junction-to-case(bottom) thermal resistance n/a

7.5 Electrical Characteristics

All specifications at TA = 25°C, AVDD = CPVDD = DVDD = 3.3V, fS = 48kHz, system clock = 512fS and 24-bit data unless otherwise noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Resolution 16 24 32 Bits
Digital Input/Output
Logic Family: 3.3V LVCMOS compatible
VIH Input logic level 0.7×DVDD V
VIL 0.3×DVDD
IIH Input logic current VIN = VDD 10 µA
IIL VIN = 0V –10
VOH Output logic level IOH = –4mA 0.8×DVDD V
VOL IOL = 4mA 0.22×DVDD
Logic Family 1.8V LVCMOS compatible
VIH Input logic level 0.7×DVDD V
VIL 0.3×DVDD
IIH Input logic current VIN = VDD 10 µA
IIL VIN = 0V –10
VOH Output logic level IOH = –2mA 0.8×DVDD V
VOL IOL = 2mA 0.22×DVDD
Dynamic Performance (PCM Mode)(1)(2)
THD+N at -1 dB(2) fS = 48kHz –94 –87 dB
fS = 96kHz –94
fS = 192kHz –94
Dynamic range(2) EIAJ, A-weighted, fS = 48kHz 108 114
EIAJ, A-weighted, fS = 96kHz 114
EIAJ, A-weighted, fS = 192kHz 114
Signal-to-noise ratio(2) EIAJ, A-weighted, fS = 48kHz 114
EIAJ, A-weighted, fS = 96kHz 114
EIAJ, A-weighted, fS = 192kHz 114
Signal to noise ratio with analog mute(2)(3) EIAJ, A-weighted, fS = 48kHz 113 123
EIAJ, A-weighted, fS = 96kHz 113 123
EIAJ, A-weighted, fS = 192kHz 113 123
Channel Separation fS = 48kHz 100 / 95 109 / 103 dB
fS = 96kHz 100 / 95 109 / 103
fS = 192kHz 100 / 95 109 / 103
Analog Output
Single Ended Output voltage 2.1 VRMS
Differential Output Voltage 4.2 VRMS
Gain error –6 ±2.0 6 % of FSR
Gain mismatch, channel-to-channel –6 ±0.5 6 % of FSR
Bipolar zero error At bipolar zero –2 ±1.0 2 mV
Load impedance 5
Filter Characteristics–1: Normal (8x)
Pass band 0.45fS kHz
Stop band 0.55fS
Stop band attenuation –60 dB
Pass-band ripple ±0.02
Delay time 20tS s
Filter Characteristics–2: Low Latency (8x)
Pass band 0.47fS kHz
Stop band 0.55fS
Stop band attenuation –52 dB
Pass-band ripple ±0.0001
Delay time 3.5tS s
Filter Characteristics–3: Asymmetric FIR (8x)
Pass band 0.40fS kHz
Stop band 0.72fS
Stop band attenuation –52 dB
Pass-band ripple ±0.05
Delay time 1.2tS s
Filter Characteristics–4: High-Attenuation (8x)
Pass band 0.45fS kHz
Stop band 0.45fS
Stop band attenuation –100 dB
Pass-band ripple ±0.0005
Delay time 33.7tS s
Power Supply Requirements
DVDD Digital supply voltage Target DVDD = 1.8V 1.65 1.8 1.95 VDC
DVDD Digital supply voltage Target DVDD = 3.3V 3.0 3.3 3.6 VDC
AVDD Analog supply voltage 3.0 3.3 3.6 VDC
CPVDD Charge-pump supply voltage 3.0 3.3 3.6 VDC
IDD DVDD supply current at 1.8V fS = 48kHz, Input is Bipolar Zero data 11 14 mA
fS = 96kHz, Input is Bipolar Zero data 12
fS = 192kHz, Input is Bipolar Zero data 14
IDD DVDD supply current at 1.8V fS = 48kHz, Input is 1kHz -1dBFS data 11 14 mA
fS = 96kHz, Input is 1kHz -1dBFS data 12
fS = 192kHz, Input is 1kHz -1dBFS data 14
IDD DVDD supply current at 1.8V(4) fS = N/A, Power Down Mode 0.3 0.6 mA
IDD DVDD supply current at 3.3V fS = 48kHz, Input is Bipolar Zero data 12 15 mA
fS = 96kHz, Input is Bipolar Zero data 13
fS = 192kHz, Input is Bipolar Zero data 15
IDD DVDD supply current at 3.3V fS = 48kHz, Input is 1kHz -1dBFS data 12 15 mA
fS = 96kHz, Input is 1kHz -1dBFS data 13
fS = 192kHz, Input is 1kHz -1dBFS data 15
IDD DVDD supply current at 3.3V(4) fS = N/A, Power Down Mode 0.5 0.8 mA
ICC AVDD + CPVDD Supply Current fS = 48kHz, Input is Bipolar Zero data 11 16 mA
fS = 96kHz, Input is Bipolar Zero data 11
fS = 192kHz, Input is Bipolar Zero data 11
ICC AVDD + CPVDD Supply Current fS = 48kHz, Input is 1kHz -1dBFS data 24 32 mA
fS = 96kHz, Input is 1kHz -1dBFS data 24
fS = 192kHz, Input is 1kHz -1dBFS data 24
ICC AVDD + CPVDD Supply Current(4) fS = N/A, Power Down Mode 0.2 0.4 mA
Power Dissipation, DVDD = 1.8V fS = 48kHz, Input is Bipolar Zero data 59.4 78 mW
fS = 96kHz, Input is Bipolar Zero data 61.2
fS = 192kHz, Input is Bipolar Zero data 64.8
Power Dissipation, DVDD = 1.8V fS = 48kHz, Input is 1kHz -1dBFS data 99 130.8 mW
fS = 96kHz, Input is 1kHz -1dBFS data 100.8
fS = 192kHz, Input is 1kHz -1dBFS data 104.4
Power Dissipation, DVDD = 1.8V(4) fS = N/A, Power Down Mode 1.2 mW
Power Dissipation, DVDD = 3.3V fS = 48kHz, Input is Bipolar Zero data 79.2 103 mW
fS = 96kHz, Input is Bipolar Zero data 82.5
fS = 192kHz, Input is Bipolar Zero data 89.1
Power Dissipation, DVDD = 3.3V fS = 48kHz, Input is 1kHz -1dBFS data 118.8 155 mW
fS = 96kHz, Input is 1kHz -1dBFS data 122.1
fS = 192kHz, Input is 1kHz -1dBFS data 128.7
Power Dissipation, DVDD = 3.3V(4) fS = N/A, Power Down Mode 2.3 4.0 mW
(1) Filter condition: THD+N: 20Hz HPF, 20kHz AES17 LPF Dynamic range: 20Hz HPF, 20kHz AES17 LPF, A-weighted Signal-to-noise ratio: 20Hz HPF, 20kHz AES17 LPF, A-weighted Channel separation: 20Hz HPF, 20kHz AES17 LPF Analog performance specifications are measured using the System Two Cascade™ audio measurement system by Audio Precision™ in the RMS mode.
(2) Output load is 10kΩ, with 470Ω output resistor and a 2.2nF shunt capacitor (see recommended output filter).
(3) Assert XSMT or both L-ch and R-ch PCM data are BPZ
(4) Power Down Mode, with LRCK, BCK, and SCK halted at Low level.
(5) One sample time si defined as the reciprocal of the sampling frequency. 1tS = 1/fS
(6) With the appropriate P coefficient setting, the PLL accepts up to 50MHz. This clock is then divided to meet the ≤ 20MHz requirement. See PLL Calculation.

7.6 Switching Characteristics

over operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Data Format (PCM Mode)
Audio data interface format I2S, left justified, right justified and TDM
Audio data bit length 16, 20, 24, 32-bit acceptable
Audio data format MSB First, 2s Complement
fS(5) Sampling frequency 8 384 kHz
Clocks
System clock frequency 64, 128, 192, 256, 384, 512, 768, 1024, 1152, 1536, 2048, or 3072
fSCK, up to 50Mhz
PLL Input Frequency (6) Clock divider uses fractional divide
D > 0, P=1
6.7 20 MHz
Clock divider uses integer divide
D = 0, P=1
1 20 MHz

7.7 Timing Requirements: SCK Input

Figure 4 shows the timing requirements for the system clock input. For optimal performance, use a clock source with low phase jitter and noise.

MIN TYP MAX UNIT
tSCY System clock pulse cycle time 20 1000 ns
tSCKH System clock pulse width, High DVDD = 1.8V 8 ns
DVDD = 3.3V 9
tSCKL System clock pulse width, Low DVDD = 1.8V 8 ns
DVDD = 3.3V 9
f_pcm51xx_td_sck_req.gifFigure 4. Timing Requirements for SCK Input

7.8 Timing Requirements: PCM Audio Data

MIN TYP MAX UNIT
tBCY BCK Pulse Cycle Time 40 ns
tBCL BCK Pulse Width LOW 16 ns
tBCH BCK Pulse Width HIGH 16 ns
tBL BCK Rising Edge to LRCK Edge 8 ns
tBCK BCK frequency at DVDD = 3.3V 24.576 MHz
tBCK(1.8V) BCK frequency at DVDD = 1.8V 12.288 MHz
tLB LRCK Edge to BCK Rising Edge 8 ns
tDS DATA Set Up Time 8 ns
tDH DATA Hold Time 8 ns
tDOD DATA delay time from BCK falling edge 15 ns
f_pcm512x4x_td_pcm_aud_slv.gifFigure 5. PCM5242 Serial Audio Timing - Slave

In software mode, the PCM5242 can act as an I2S master, generating BCK and LRCK as outputs from the SCK input.

Table 3. I2S Master Mode Registers

Register Function
Page0, Register 9, D(0), D(4), and D(5) I2S Master mode select
Register 32, D(6:0) BCK divider and LRCK divider
Register 33, D(7:0)

The I2S master timing is shown in Figure 6.

MIN TYP MAX UNIT
tBCY BCK Pulse Cycle Time 40 ns
tBCL BCK Pulse Width LOW 16 ns
tBCH BCK Pulse Width HIGH 16 ns
tBCK BCK frequency at DVDD = 3.3V 24.576 MHz
tBCK(1.8V) BCK frequency at DVDD = 1.8V 12.288 MHz
tLRD LRCKx delay time from BCKx falling edge –10 20 ns
tDS DATA Set Up Time 8 ns
tDH DATA Hold Time 8 ns
tDOD DATA delay time from BCK falling edge at DVDD = 3.3V 15 ns
tDOD(1.8V) DATA delay time from BCK falling edge at DVDD = 1.8V 20 ns
f_pcm512x4x_td_pcm_aud_mstr.gifFigure 6. PCM5242 Serial Audio Timing - Master

7.9 Timing Requirements: XSMT

MIN TYP MAX UNIT
tr Rise time 20 ns
tf Fall time 20 ns
f_pcm51xx_td_xsmt_soft_mute.gifFigure 7. XSMT Timing for Soft Mute and Soft Un-Mute

Typical Characteristics

All specifications at TA = 25°C, AVDD = CPVDD = DVDD = 3.3V, fS = 48kHz, system clock = 512 fS and 24-bit data unless otherwise noted.
thd_n_input_level_5101.gif
Figure 8. 1 THD+N versus Input Level
fft_-60dB_5101.gif
Figure 10. 1 FFT Plot At -60db Input
fft_bpz_5101.gif
Figure 12. 1 FFT Plot At Bipolar Zero Data (BPZ)
fft_bpz_amute_5101.gif
Figure 14. 1 FFT Plot at BPZ With Analog Mute (Amute)
fft_-60_sub_300kHz_5101.gif
Figure 16. 1 FFT Plot at -60dB to 300khz
thd_n_input_level_5102.gif
Figure 9. 2 THD+N versus Input Level
fft_-60dB_5102.gif
Figure 11. 2 FFT Plot At -60db Input
fft_bpz_5102.gif
Figure 13. 2 FFT Plot at BPZ
fft_bpz_amute_5102.gif
Figure 15. 2 FFT Plot at BPZ With Amute
fft_-60_sub_300kHz_5102.gif
Figure 17. 2 FFT Plot at -60dB to 300khz