SRC4194中文資料4 通道異步采樣速率轉(zhuǎn)換器數(shù)據(jù)手冊(cè)TI規(guī)格書

描述 Description

The SRC4194 is a four-channel, asynchronous sample rate converter (ASRC), designed for professional and broadcast audio applications. The SRC4194 combines a wide input-to-output sampling ratio with outstanding dynamic range and ultra low distortion. The input and output serial ports support the most common audio data formats, as well as a time division multiplexed (TDM) format. This allows the SRC4194 to interface to a wide range of audio data converters, digital audio receivers and transmitters, and digital signal processors.
The SRC4194 may be operated in Hardware mode as a standalone pin-programmed device, with dedicated control pins for serial port mode, audio data format, soft mute, bypass, and digital filtering functions. Alternatively, the SRC4194 may be operated in Software mode, where a four-wire serial peripheral interface (SPI) port provides access to internal control and status registers.
The SRC4194 operates from either a +1.8V core supply or a +3.3V core supply. When operating from +3.3V, the +1.8V required by the core logic is derived from an internal voltage regulator. The SRC4194 also requires a digital I/O supply, which operates from +1.65V to +3.6V. The SRC4194 is available in a TQFP-64 package.

特性 Features

? AUTOMATIC SENSING OF INPUT-TO-OUTPUT SAMPLING RATIO
? WIDE INPUT-TO-OUTPUT SAMPLING RANGE: 16:1 to 1:16
? SUPPORTS INPUT AND OUTPUT SAMPLING RATES UP TO 212kHz
? DYNAMIC RANGE: 144dB (?60dbFS Input, BW = 20Hz to fs/2)
? THD+N: ?140dB (0dbFS Input, BW = 20Hz to fs/2)
? HIGH-PERFORMANCE, LINEAR-PHASE DIGITAL FILTERING WITH BETTER THAN 140dB OF STOP BAND ATTENUATION
? FLEXIBLE AUDIO SERIAL PORTS:
? Master or Slave Mode Operation
? Supports I2S, Left-Justified, Right-Justified, and TDM Data Formats
? TDM Mode Allows Daisy-Chaining of Up to Four Devices
? SUPPORTS 24-, 20-, 18-, or 16-BIT INPUT AND OUTPUT DATA
? All Output Data is Dithered from the Internal 28-Bit Data Path
? SERIAL PERIPHERAL INTERFACE (SPI)? PORT SUPPORTS REGISTER READ AND WRITE OPERATIONS IN SOFTWARE MODE
? BYPASS MODE
? Routes Input Port Data Directly to the Output Port
? FOUR GROUP DELAY OPTIONS FOR THE INTERPOLATION FILTER
? DIRECT DOWNSAMPLING OPTION FOR THE DECIMATION FILTER
? DIGITAL DE-EMPHASIS FILTER
? User-Selectable for 32kHz, 44.1kHz, and 48kHz Sampling Rates
? SOFT MUTE FUNCTION
? PROGRAMMABLE DIGITAL OUTPUT ATTENUATION (SOFTWARE MODE ONLY)
? 256 Steps: 0dB to ?127.5dB with 0.5dB Steps
? INPUT-TO-OUTPUT SAMPLING RATIO READBACK (SOFTWARE MODE ONLY)
? POWER-DOWN MODES
? SUPPORTS OPERATION FROM A SINGLE +1.8V or +3.3V POWER SUPPLY
? AVAILABLE IN A TQFP-64 PACKAGE
? APPLICATIONS
? DIGITAL MIXING CONSOLES
? DIGITAL AUDIO WORKSTATIONS
? AUDIO DISTRIBUTION SYSTEMS
? BROADCAST STUDIO EQUIPMENT
? GENERAL DIGITAL AUDIO PROCESSING
U.S. Patent No. 7,262,716.

簡介

SRC4194屬于集成電路（IC）的音頻專用。由TI制造生產(chǎn)的SRC4194音頻專用音頻專用的半導(dǎo)體器件專為音頻信號(hào)的濾波、驅(qū)動(dòng)、放大、轉(zhuǎn)換和接口而設(shè)計(jì)。特征包括功能、應(yīng)用、通道數(shù)、接口、電壓和規(guī)格。應(yīng)用包括音頻系統(tǒng)、汽車音頻、消費(fèi)類音頻、樂器、專業(yè)音頻、通信系統(tǒng)、電信系統(tǒng)、數(shù)字音頻、驅(qū)動(dòng)器、前置放大器、信號(hào)混合、信號(hào)處理、語音觸發(fā)器解決方案和 10 Base-T。