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PDF CS42435 Data sheet ( Hoja de datos )
| Número de pieza | CS42435 | |
| Descripción | Surround-sound Codecs | |
| Fabricantes | Cirrus Logic | |
| Logotipo |  |
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CS42435
108 dB, 192 kHz 4-In, 8-Out TDM CODEC
FEATURES
GENERAL DESCRIPTION
Four 24-bit A/D, Eight 24-bit D/A Converters
ADC Dynamic Range
– 105 dB Differential
– 102 dB Single-Ended
DAC Dynamic Range
– 108 dB Differential
– 105 dB Single-Ended
ADC/DAC THD+N
– -98 dB Differential
– -95 dB Single-Ended
Compatible with Industry-Standard Time
Division Multiplexed (TDM) Serial Interface
DAC Sampling Rates up to 192 kHz
ADC Sampling Rates up to 96 kHz
Programmable ADC High-Pass Filter for DC
Offset Calibration
www.DataSheet4U.com Logarithmic Digital Volume Control
Hardware Mode or Software I²C® & SPI™
Supports Logic Levels Between 5 V and 1.8 V
The CS42435 CODEC provides four multi-bit analog-to-
digital and eight multi-bit digital-to-analog delta-sigma
converters. The CODEC is capable of operation with ei-
ther differential or single-ended inputs and outputs, in a
52-pin MQFP package.
Four fully differential, or single-ended, inputs are avail-
able on stereo ADC1 and ADC2. Digital volume control
is provided for each ADC channel, with selectable over-
flow detection. An auxiliary serial input is available for
an additional two channels of PCM data.
All eight DAC channels provide digital volume control
and can operate with differential or single-ended
outputs.
The CS42435 is available in a 52-pin MQFP package in
Commercial (-40° to +85°) and Automotive (-40° to
+105°) grades. The CDB42438 Customer Demonstra-
tion board is also available for device evaluation and
implementation suggestions. Please refer to “Ordering
Information” on page 58 for complete ordering
information.
The CS42435 is ideal for audio systems requiring wide
dynamic range, negligible distortion and low noise, such
as A/V receivers, DVD receivers, and automotive audio
systems.
Control Port & Serial
Audio Port Supply =
1.8 V to 5 V
Digital Supply = 3.3 V
Hardware Mode or
I2C/SPI Software Mode
Control Data
Reset
Register
Configuration
Analog Supply =
3.3 V to 5 V
Internal Voltage
Reference
TDM Serial Audio
Input
Auxilliary Serial
Audio Input
Input Master
Clock
TDM Serial Audio
Output
http://www.cirrus.com
Volume
Controls
Digital
Filters
ΔΣ
Modulators
High Pass
Filter
High Pass
Filter
Digital
Filters
Digital
Filters
Multibit
DAC1-4 and
Analog Filters
8
8
Differential or
Single-Ended
Outputs
Multibit
Oversampling
ADC1
Multibit
Oversampling
ADC2
2
2
Differential or
Single-Ended
Analog Inputs
2
2
Copyright © Cirrus Logic, Inc. 2006
(All Rights Reserved)
OCTOBER '06
DS685F1
1 page  
CS42435
Table 4. Serial Audio Interface Channel Allocations ................................................................................. 33
Table 5. MCLK Frequency Settings .......................................................................................................... 42
Table 6. Example AOUT Volume Settings ................................................................................................ 46
Table 7. Example AIN Volume Settings .................................................................................................... 47
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DS685F1
5
5 Page 
3. TYPICAL CONNECTION DIAGRAMS
+3.3 V
10 µF +
0.01 µF
0.01 µF
+ 10 µF
CS42435
+3.3 V to +5 V
www.DataSheet4U.com
0.01 µF
0.01 µF
CS5341
A/D
Converter
8
VD
10 VLS
16 AUX_SCLK
15 AUX_LRCK
17 AUX_SDIN
+1.8 V
to +5.0 V
Digital Audio
Processor
12 MCLK
11 SCLK
7
14
FS
DAC_SDIN
13 ADC_SDOUT
37 46
VA VA
AOUT1+
AOUT1-
AOUT2+
AOUT2-
20
19
21
22
AOUT3+ 24
AOUT3- 23
AOUT4+ 25
AOUT4- 26
AOUT5+ 28
AOUT5- 27
AOUT6+ 29
AOUT6- 30
AOUT7+ 32
AOUT7- 31
AOUT8+ 33
AOUT8- 34
Analog Output Filter 2
Analog Output Filter 2
Analog Output Filter 2
Analog Output Filter 2
Analog Output Filter 2
Analog Output Filter 2
Analog Output Filter 2
Analog Output Filter 2
AIN1+ 39
AIN1- 38
AIN2+
AIN2-
41
40
Input
Filter 1
Input
Filter 1
Analog Input 1
Analog Input 2
Micro-
Controller
+1.8 V
to +5 V
2 kΩ
** Resistors are required
for I2C control port
operation
5 RST
1 SCL/CCLK
2 SDA/CDOUT
4 AD1/CDIN
3 AD0/CS
** **
2 kΩ
6 VLC
0.1 µF
AIN3+ 43
AIN3- 42
AIN4+
AIN4-
45
44
Input
Filter 1
Input
Filter 1
Analog Input 3
Analog Input 4
VQ 37
FILT+ 47
+
+
DGND DGND
9 18
AGND AGND
35 48
0.1 µF 100 µF 0.1 µF 4.7 µF
Connect DGND and AGND at Codec
1. See the ADC Input Filter section in the Appendix.
2. See the DAC Output Filter section in the Appendix.
Figure 1. Typical Connection Diagram (Software Mode)
DS685F1
11
11 Page | ||
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| PDF Descargar | [ Datasheet CS42435.PDF ] | |
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