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參數資料
| 型號： | CS6422-IS |
| 廠商： | CIRRUS LOGIC INC |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | Enhanced Full-Duplex Speakerphone IC |
| 中文描述： | SPEAKER PHONE CIRCUIT, PDSO20 |
| 封裝： | 0.300 INCH, MS-013, SOIC-20 |
| 文件頁數： | 1/48頁 |
| 文件大小： | 873K |
| 代理商： | CS6422-IS |
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Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
1
(All Rights Reserved)
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com
CS6422
Enhanced Full-duplex Speakerphone IC
Features
Single-chip
,
full-duplex
,
hands-free operation
Optional Tx Noise Guard
Programmable attenuation during double-talk
Optional 34 dB microphone preamplifier
Dual channel AGC’ed volume controls with
mute
Dual integrated 80 dB IDR codecs
Speech-trained Network and Acoustic Echo
Cancellers
Rx and Tx supplementary echo suppression
Configurable half-duplex training mode
Powerdown mode
Microcontroller Interface
General Description
Most modern speakerphones use half-duplex operation,
which alternates transmission between the far-end talker
and the speakerphone user. This is done to ensure sta-
bility because the acoustic coupling between the
speaker and microphone is much higher in speaker-
phones than in handsets where the coupling is
mechanically suppressed.
The CS6422 enables full-duplex conversation using
echo cancellation and suppression in a single-chip solu-
tion. The CS6422 can easily replace existing half-duplex
speakerphone ICs with a huge increase in conversation
quality.
The CS6422 consists of telephone & audio interfaces,
two codecs and an echo-cancelling DSP.
See page 48
.
CS6422-IS
CDB6422
E
valuation Board
-40
to 85o
C
20-pin SOIC
TGain
TVol
Σ
+
-
Acoustic
Echo
Canceller
ADC
Pre-emphasis
Filter
+
ASdt
DAC
Σ
+
-
Network
Echo
Canceller
Pre-emphasis
Filter
+
NSdt
DAC
ADC
Clock
Generation
Voltage
Reference
Microcontroller Interface
RGain
RVol
(0, 6, 9.5, 12 dB)
Network
Sidetone
(none, -24,
-18, -12 dB)
Acoustic
Sidetone
(none, -24,
-18, -12 dB)
1 k
Mic
34 dB
(0, 6, 9.5, 12 dB)
NI
NO
17
4
8
7
6
5
15
2
19
18
APO
API
20
CLKO
13
14
CLKI
AO
3
AVDD
DVDD
NC1
NC2
NC3
NC4
9
10
11
12
16
1
(Mute, -12 to +30 dB)
(Mute, -12 to +30 dB)
Rx
Suppression
Tx
Suppression
DS295PP4
Copyright
Cirrus Logic, Inc. 2005
CS6422
SEP ‘05
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相關代理商/技術參數 |
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| CS6422-ISZ | 功能描述:音頻放大器 Enhanced Full-Duplex Speakerphone IC RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| CS6435AA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Cypress Semiconductor 功能描述: |
| CS644 | 功能描述:電氣外殼 SCREW COVER NO KO’S 6 x 4 x 4" RoHS:否 制造商:Bud Industries 產品:Wall Mount Enclosures 類型:Single Door NEMA 額定值:3R 外部深度:254 mm 外部高度:305 mm 外部寬度:305 mm 面板寬度:261 mm 面板高度:261 mm 材料:Steel 顏色:Gray 通風:Not Available |
| CS6447-000 | 制造商:TE Connectivity 功能描述:TTVF150075YW5 - Cable Rools/Shrink Tubing |
| CS6450IQ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
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