Cirrus-logic CS42L73 Instrukcja Użytkownika Pobierz pdf (Strona 128)

128 DS882F1

CS42L73

8.2.2 Input Path Digital HPF Response

0.4 0.45 0.5 0.55 0.6 0.65

−100

−90

−80

−70

−60

−50

−40

−30

−20

−10

Frequency (normalized to Fs)

Magnitude (dB)

0.45 0.46 0.47 0.48 0.49 0.5 0.51 0.52 0.53 0.54 0.5

−10

−9

−8

−7

−6

−5

−4

−3

−2

−1

Frequency (normalized to Fs)

Magnitude (dB)

Figure 50. Input Path LPF Transition Band Figure 51. Input Path LPF Transition Band Detail

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2

x 10

−3

−3.5

−3

−2.5

−2

−1.5

−1

−0.5

0.5

Normalised to Fs

Amplitude in dB

Figure 52. Input Path HPF Frequency Response

1 2 ... 123 124 125 126 127 128 129 130 131 132 133 ... 138 139

Product Overview 1
Ultralow Power Consumption 1
Applications 1
System Features 1
General Description 3
TABLE OF CONTENTS 4
LIST OF FIGURES 9
LIST OF TABLES 10
12 DS882F1 12
DS882F1 13 13
1.3 Pin/Ball Descriptions 14
DS882F1 15 15
2. TYPICAL CONNECTION DIAGRAM 17
ABSOLUTE MAXIMUM RATINGS 20
DC ELECTRICAL CHARACTERISTICS 21
22 DS882F1 22
CHARACTERISTICS 24
MIC BIAS CHARACTERISTICS 26
--70-60dB 27
0.73•VA 0.79•VA 0.85•VA V 27
Test Load 28
Measurement 28
FILTER CHARACTERISTICS 33
POWER CONSUMPTION 34
DMIC_SCLK 37
 = “s” or “m” 38
Repeated 40
4. APPLICATIONS 41
4.5 Class H Amplifier 44
4.5.1 Power Control Options 44
48 DS882F1 48
4.5.3 Efficiency 49
4.6 DAC Limiter 49
LIMRRATEx[2:0] 50
LIMARATEx[2:0] 50
4.8 Serial Ports 51
4.8.1 Power Management 51
4.8.2 I/O 51
4.8.3 High-impedance Mode 52
4.8.4 Master and Slave Timing 52
4.8.4.1 SCLK = MCLK Modes 53
4.8.6 Formats 54
4.8.6.1 I²S Format 55
4.8.6.2 PCM Format 55
4.8.7 Mono/Stereo 57
4.8.8 Data Bit Depths 57
4.8.8.1 I²S Format Bit Depths 57
4.8.8.2 PCM Format Bit Depths 58
4.10 Input Paths 59
DMIC_CLK 60
4.11 Digital Mixer 61
62 DS882F1 62
4.11.1 Mono and Stereo Paths 63
4.15 Interrupts 70
4.16 Control Port Operation 71
4.16.1 I²C Control 71
7 6 5 4 3 2 1 0 72
4.17 Fast Start Mode 73
SPKLINEOUT 74
EARSPKOUT 74
Normal audioNo audio 75
Clipped/Ramping audio 75
5. REGISTER QUICK REFERENCE 76
DS882F1 77 77
78 DS882F1 78
DS882F1 79 79
80 DS882F1 80
(Read Only) 80
6. REGISTER DESCRIPTION 81
6.12.2 ASP Sample Rate 90
6.13.1 ASP Master/Slave Mode 90
6.14.5 VSP SDIN Location 92
6.15.1 VSP Master/Slave Mode 92
6.16.1 VSP Sample Rate 93
6.16.2 XSP Sample Rate 93
6.17.1 Digital Swap/Mono 94
6.17.2 Input Path Channel B=A 94
6.17.4 PGA Soft-Ramp 95
6.17.5 Analog Zero Cross 95
6.17.6 Digital Soft-Ramp 96
6.19.1 Mic PREAMP x Volume 98
6.19.2 PGAx Volume 98
DS882F1 99 99
DS882F1 103 103
104 DS882F1 104
76543210 110
(Address 2Eh) 112
6.44.3 ALCx Soft-Ramp Disable 116
6.45.3 Mixer Soft-Ramp Enable 117
118 DS882F1 118
DS882F1 119 119
120 DS882F1 120
DS882F1 121 121
7. PCB LAYOUT CONSIDERATIONS 125
8. PERFORMANCE DATA 126
DS882F1 127 127
128 DS882F1 128
8.3 Core Circuitry Attributes 129
8.3.1 ASRC Attributes 129
8.3.1.1 Response 129
8.3.1.2 Group Delay 130
8.3.1.3 Lock Time 130
DS882F1 131 131
8.4.2 DAC HPF Response 132
8.4.4 Startup Times 133
9. PARAMETER DEFINITIONS 134
10.PACKAGE DIMENSIONS 135
BUMP SIDESIDE VIEW 136
TOP SIDE 136
11.THERMAL CHARACTERISTICS 137
12.ORDERING INFORMATION 137
13.REFERENCES 137
14.REVISION HISTORY 138
DS882F1 139 139

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