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TLV320AD12A PDF预览

TLV320AD12A

更新时间： 2024-11-22 22:49:43
品牌 Logo 应用领域
德州仪器 - TI 解码器编解码器
页数 文件大小 规格书
21页 314K
描述
3.3-V INTEGRATED ADSL CODEC

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TLV320AD12A 数据手册

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TLV320AD12A  
3.3-V INTEGRATED ADSL CODEC  
SLWS088B – JULY 1999 – REVISED MARCH 2000  
Complete Discrete Multitone (DMT)-Based  
Asymmetric Digital Subscriber Line (ADSL)  
Coder/Decoder (Codec) Solution  
2s-Complement Data Format  
Selectable 2.2-MSPS or 4.4-MSPS Parallel  
Data Transfer Rate  
Complies With ANSI T1.413, Issue 2 and  
ITU G.992.1  
Serial Configuration Port  
Eight General-Purpose (GP) Output  
Terminals  
Supports up to 8-Mbit/s Downstream and  
800-kbit/s Upstream Duplex  
Supports Multiple-Channel Configuration  
Single 3.3-V Supply  
Integrated 14-Bit Converter for  
Transmitter/Receiver  
Hardware/Software Power Down  
–40°C to 85°C Operation  
Integrated Transmit/Receive (TX/RX)  
Channel Filters  
Packaged in 100-Pin Plastic Quad Flatpack  
Integrated TX/RX Attenuation/Gain  
Integrated Reference  
High-Speed Parallel Interface  
description  
TheTLV320AD12Aisahigh-speedcoder/decoder(codec)forcentraloffice-side(CO)discrete-multitone(DMT)  
asymmetric-digitalsubscriber line (ADSL) access that supports ANSI Std T1.413, Issue 2 and ITU G.992.1. The  
codec is a low-power device comprised of five major functional blocks: transmitter (TX), receiver (RX), clock,  
reference, and host interface.  
Thetransmitchannelconsistsofa25.875-kHzto1.104-MHzdigitalband-passfilter, a14-bit, 8.832-MSPSDAC,  
a 1.104-MHz analog low-pass filter, and a transmit attenuator. The receiver channel consists of a two  
programmable-gain-amplifier stages (PGA), a 138-kHz analog low-pass filter, a 14-bit, 4.416-MSPS ADC, a  
138-kHz digital low-pass filter. An onboard reference circuit generates 1.5-V reference voltage for the  
converters.  
The codec has two interface ports: a parallel port for data transfer, and a serial port for control. The parallel port  
is 16 bits wide, and is reserved for moving data between the codec and a DSP, such as the TMS320C6XX.  
Configuration is done via the serial port. A special interface scheme enables multichannel system design. The  
TLV320AD12A can be powered down via a dedicated terminal or through software control to reduce heat  
dissipation. Additionally, there is a general-purpose (GP) port consisting of eight output terminals for control of  
external circuitry.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Copyright 2000, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...21

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