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Cirrus-logic CS42L73 Manuale Utente Pagina 62
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62
DS882F1
CS42L73
0
1
2
Attenuation
+
Attenuation
3
0
1
2
Attenuation
3
+
Attenuation
Attenuation
Attenuation
Attenuation
Attenuation
0
1
2
Attenuation
+
Attenuation
3
0
1
2
Attenuation
Attenuation
3
+
Attenuation
Attenuation
Attenuation
Attenuation
Stereo
Headphone /
Line Output
(HL)
Output Path
Audio
Serial Port (ASP),
Stereo Input
(via ASRC)
Voice
Serial Por
t (VSP),
Mono Input
(via ASR
C)
Audio
Serial Port (ASP),
Stereo Output
(via ASRC
)
Voice
Serial Port (VSP),
Ster
eo Output
(via ASRC)
Left
Right
Left
Right
VSPO_ST
EREO
Left
Right
0
0
Mono
Mix
3
11
00
Mono Mix
-6 dB
-6 dB
+
Right
Left
Right
Left
Right
Left
Mono
Speakerphone (SPK
)
[Speakerphone Left]
Output Path
Mono
Ear Speaker /
Speaker
phone Li
ne
(ESL)
[Speak
erphone
Right
]
Output Path
Auxiliary
Serial Port (XSP),
Stereo Input
(via ASRC)
3
SPK_XSP_
SEL[1:0]
0
1
2
Attenuation
Attenuation
3
+
Attenuation
Attenuation
0
1
2
Attenuation
+
Attenuation
3
0
1
2
Attenuation
Attenuation
3
+
Attenuation
Attenuation
Attenuation
Attenuation
Auxiliary
Serial Port (XSP),
Stereo Output
(via ASRC)
XSPO_STE
REO
Mono
Mix
11
00
Right
Left
Right
Left
0
1
2
Attenuation
+
Attenuation
3
0
1
2
Attenuation
Attenuation
3
+
Attenuation
Attenuation
Attenuation
Attenuation
-6 dB
-6 dB
00
01
1x
00
01
1x
SPK_ASP_
SEL[1:0]
ESL_XSP_SE
L[1:0]
0
1
2
Attenuation
Attenuation
3
+
Attenuation
Attenuation
00
01
1x
00
01
1x
ESL_ASP_SE
L[1:0]
-6 dB
-6 dB
Left
Right
Mono Mix
Left
Right
Mono Mix
Mono
2
2
1
1
Stereo
Input Path
(IP)
(Originating from
ADCs / Digital MICs)
+
+
++
Figure 32. Digital Mixer
Diagram
Refer to section
“Input Pa
ths” on
page 59
Refer to sections
“Serial Ports” on page 51
and
“Asyn-
chronous Sample Rate Converters (ASRCs)” on page 59
1
2
...
57
58
59
60
61
62
63
64
65
66
67
...
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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