Cirrus-logic CS42L73 User Manual Page 34
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34 DS882F1
CS42L73
POWER CONSUMPTION
Test conditions (unless otherwise specified): Connections to the CS42L73 are shown in the “Typical Connection Diagram” on
page 17; GND = AGND = PGND = CPGND = DGND = 0 V; all voltages are with respect to ground (GND); VA = VCP = VL =
1.80 V, VP = 3.70 V; T
A
= +25 C; RESET pin inactive; f
MCLK1
= 6.144 MHz, MCLK2 is held low; Internal MCLK enabled and
derived from MCLK1 input (/1) (thus, Fs = 48 kHz); f
DMIC_SCLK
= 1.536 MHz (/4); silence on analog inputs, microphones are not
attached; SCL inactive, SDA held high; XSP and ASP are in I²S slave mode, VSP is in PCM mode, Fs
ext
(XSP and ASP)
=
48 kHz, Fs
ext
(VSP)
= 8 kHz; XSP, ASP, and VSP clocks are held low unless port is in use; XSP, ASP, VSP and DMIC data
inputs are held low (all zeros data), XSP, ASP, and VSP data output lines are not driven by other devices in system; no load on
analog outputs except for HP Zobel; PDN, PDN_ADCx, PDN_BIASx, PDN_DMICx, PDN_XSPSDOUT, PDN_XSPSDIN, PDN_
ASPSDOUT, PDN_ASPSDIN, PDN_VSP, PDN_HP, PDN_EAR, PDN_LO, PDN_SPK, PDN_SPKLO, PDN_THMS = 1b; all
other register controls as per defaults; Figure 9 on page 34 describes the current-measuring method.
Notes:
48. In accordance with the JEITA CP-2905B standard, 0.1 mW per channel is delivered to headphone loads via a 1 kHz
sine wave. The popular 32 headphone loading is used.
Case/Configuration
Class
H
Mode
Typical Current (A) Total
Power
(W)
i
VA
i
VP
i
VCP
i
VL
1 Reset RESET
and MCLK1 held low, PDN* = x, MCLKDIS = x
-
121 4
18
2 Standby (PDN = 1b) MCLK1 held low, MCLK from MCLK1, MCLKDIS = 1b
-1417
31
3
Stereo Play to HP: ASP to HP
PDN_ASPSDIN, PDN_HP = 0b
VCP/3
611
4
468 1029
3809
VCP/2
611 4 556 1029
3968
VCP
611 4 913 1029
4610
4
Stereo Play to HP - 32 load (Note 48): ASP to HP
PDN_ASPSDIN, PDN_HP = 0b
VCP/3
611 4 1598 1338
6399
VCP/2
611 4 2238 1338
7551
VCP
611 4 4255 1338
11182
5
Handset Voice Call (Digital Mic): DMICA to VSP, Mono VSP to EAR
PDN_DMICA, PDN_VSP, PDN_EAR = 0b
- 1233 4 1 1232
4454
6
Handset Voice Call (Analog Mic): MIC1 to VSP, Mono VSP to EAR
PDN_BIAS1, PDN_ADCA, PDN_VSP, PDN_EAR = 0b
- 2377 107 1 1160
6764
7
Headset Voice Call: MIC2 to VSP, Mono VSP to Stereo HP
PDN_BIAS2, PDN_ADCB, PDN_VSP, PDN_HP = 0b
VCP/3 1794 112 475 1280
6803
8
Headset Voice Call - 32 load (Note 48): MIC2 to VSP, Mono VSP to Stereo HP
PDN_BIAS2, PDN_ADCB, PDN_VSP, PDN_HP = 0b
VCP/3 1794 112 1598 1329
8912
Note:
The current draw on each CS42L73 power supply
pin, except VP, is derived from the measured volt-
age drop across a 10- series resistor between
the associated supply source and each voltage
supply pin. Given the larger currents that are pos-
sible on the VP supply, an ammeter is used on
that rail.
Voltmeter
-
+
-
+
-
+
Power Supply
Ammeter
VA
AGND/CPGND/
DGND/PGND
VCP
0.1 µF
2.2 µF
VP
4.7 µF 0.1 µF
VL
CS42L73
0.1 µF
DAC
+
-
10
DAC
+
-
10
DAC
+
-
10
Figure 9. Power Consumption Test Configuration
- 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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