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參數資料
| 型號： | EV6090 |
| 英文描述： | EvKit for CMX639 |
| 中文描述： | 評估板的CMX639 |
| 文件頁數： | 1/12頁 |
| 文件大小： | 441K |
| 代理商： | EV6090 |
COMMUNICATION SEMICONDUCTORS
EV6090
USER MANUAL
CMX639 CVSD CODEC
Evaluation Kit
2001 MX-COM, Inc.
www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054
Doc. # 20480218.003
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
All trademarks and service marks are held by their respective companies.
ADVANCE INFORMATION
CMX639 Product Evaluation
Telephone Handset Connectors
On-board Speaker Driver
Variable Gain Input Amplifier
Selectable Sample Clock Rates
Easy Jumper/Switch configuration
User Prototyping PCB Area
x(-1)
x(-47)
S -20dB
to
+20dB
0dB
to
-6dB
Speaker
Driver
+20dB
Computer
Interface
Direct Out
P1: 1
E3
E4
XTAL
Switch Control (Local)
V+
I N
VDD
I N
AGND
V-
I N
Power
Conditioning
Telephone
Handset (Mic)
Telephone
Handset
(Earpiece)
CMX639
Audio +In
Audio -In
Input Conditioning
Gain Block
Direct In
P1: 2
P1: 3,4
Data Rate (2)
Algorithm
Force Idle (2)
Data En
Powersave
Mic Input
Dec In
2
3
4
D M
Enc In
Dec Out
Enc Out
Dec In
Data
Clocks
The EV6090 is a single board evaluation platform used for the evaluation of the CMX639 CVSD codec. The
board is powered from an external supply that can be used to evaluate CVSD encoder and decoder
performance at different supply voltages.
Jumpers are provided to select signal paths, clock source, measure device current, etc.
Convenient I/O allows connection to a telephone handset, microphone, and/or a loudspeaker for simple
experiments.
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