Electronic Components Datasheet Search
Selected language     English  ā–¼


CS6403-IQ Datasheet(PDF) 9 Page - Cirrus Logic

Part No. CS6403-IQ
Description  Echo-Cancelling Codec
Download  54 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  CIRRUS [Cirrus Logic]
Homepage  http://www.cirrus.com
Logo 

 9 page
background image
OVERVIEW
In hands-free speakerphones, the signal from the
far end may echo about the near-end environ-
ment and then be received at the near-end
microphone.
When heard at the far end, this
echo signal can be very annoying, particularly if
the signal is delayed by transmission or signal-
processing delays.
Voice switching is a particularly simple tech-
nique for eliminating this echo, but since it
imposes half-duplex communication, it seriously
compromises conversation quality.
Echo cancellation can provide high-quality, full-
duplex communication, but typically must be
implemented using expensive digital signal-proc-
essing hardware.
Echo Cancellation in the CS6403
The CS6403 provides high-quality echo cancel-
lation at low cost.
This breakthrough in
cost/performance is made possible on the
CS6403 by custom, application-optimized proc-
essing blocks, which are integrated on a single
die, as shown in Figure 2.
One of these processing blocks is the AFP
(Adaptive Filter Processor).
This block imple-
me nts a 5 1 2 -ta p A F IR ( Ad aptive Finite
Impulse-Response) filter which is updated using
an enhanced least-mean squared (LMS) algo-
rithm. At a sampling rate of 8 kHz, it can cancel
up to 64 ms of echo. By default, 10 ms of the
available 64 ms are allocated to a network can-
celler (NEC), and the remaining 54 ms are
allocated to an acoustic echo canceller (AEC).
RESET
CLKIN CLKOUT
DVDD0
PLL/Oscillator
SSI
CPU
AFP
CODEC
SCLK
SFRAME
SMASTER
SDO
SDI
RESERVED0
DGND0
RESERVED1
GPIN3
CONFIG
GPIN0
GPIN1
GPIN2
SCLK_RATE0 SCLK_RATE1
DVDD1
DGND1
PVDD
PGND0
PGND1
AVDD
SPKROUTP
SPKROUTN
VREF
VCM
MICIN
AGND0
AGND1
GPOUT0
GPOUT1
RESERVED2
RESERVED3
RESERVED4
SSYNC
SYNCOUT
UALAW
NC
RESERVED5
RESERVED6
CLK_SEL
Figure 2. CS6403 Internal Block Diagram
CS6403
DS192PP6
9




Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38  39  40  41  42  43  44  45  46  47  48  49  50  51  52  53  54 


Datasheet Download



Related Electronics Part Number

Part NumberComponents DescriptionHtml ViewManufacturer
TP3070COMBO II Programmable PCM CODEC/Filter 1 2 3 4 5 MoreNational Semiconductor (TI)
MSM7575Multi-Function PCM CODEC 1 2 3 4 5 MoreOKI electronic componets
MN86063High-Speed CODEC LSI for Facsimile Images 1 2 3 4 5 MorePanasonic Semiconductor
ST5090LOW VOLTAGE 14-BIT LINEAR CODEC WITH HIGH-PERFORMANCE AUDIO FRONT-END 1 2 3 4 5 MoreSTMicroelectronics
TLV320AIC23STereo Audio CODEC 8- to 96kHz With Integrated Headphone Amplifier 1 2 3 4 5 MoreTexas Instruments
BU8731KVPCM codec IC for digital cellular telephones 1 2 3 4 5 MoreRohm
AD1845Parallel-Port 16-Bit SoundPort Stereo Codec 1 2 3 4 5 MoreAnalog Devices
T7507T7507 Quad PCM Codec with Filters Termination Impedance and Hybrid Balance 1 2 3 4 5 MoreAgere Systems
AK4545AC97 AUDIO CODEC WITH SRC AND DIT 1 2 3 4 5 MoreAsahi Kasei Microsystems
CS422324-Bit 105 dB Audio Codec with Volume Control 1 2 3 4 5 MoreCirrus Logic

Link URL

Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Bookmark   |   Link Exchange   |   Manufacturer List
All Rights ReservedĀ© Alldatasheet.com 2003 - 2017    


Mirror Sites
English : Alldatasheet.com  , Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp  |   Russian : Alldatasheetru.com
Korean : Alldatasheet.co.kr   |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com  |   Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl