SRC4184中文资料4 通道异步采样速率转换器数据手册TI规格书

描述 Description

The SRC4184 is a four-channel, asynchronous sample rate converter (ASRC), designed for professional and broadcast audio applications. The SRC4184 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 SRC4184 to interface to a wide range of audio data converters, digital audio receivers and transmitters, and digital signal processors.
The SRC4184 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 SRC4184 may be operated in Software mode, where a four-wire serial peripheral interface (SPI) port provides access to internal control and status registers.
The SRC4184 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 SRC4184 also requires a digital I/O supply, which operates from +1.65V to +3.6V. The SRC4184 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
• DYNAMIC RANGE: 128dB (–60dbFS Input, BW = 20Hz to fs/2, A-Weighted)
• THD+N: –125dB (0dbFS Input, BW = 20Hz to fs/2)
• FLEXIBLE AUDIO SERIAL PORTS:
• Supports I2S, Left-Justified, Right-Justified, and TDM Data Formats
• SUPPORTS 24-, 20-, 18-, or 16-BIT INPUT AND OUTPUT DATA
• SERIAL PERIPHERAL INTERFACE (SPI)™ PORT SUPPORTS REGISTER READ AND WRITE OPERATIONS IN SOFTWARE MODE
• FOUR GROUP DELAY OPTIONS FOR THE INTERPOLATION FILTER
• DIGITAL DE-EMPHASIS FILTER
• SOFT MUTE FUNCTION
• INPUT-TO-OUTPUT SAMPLING RATIO READBACK (SOFTWARE MODE ONLY)
• SUPPORTS OPERATION FROM A SINGLE +1.8V or +3.3V POWER SUPPLY
• APPLICATIONS
• DIGITAL AUDIO WORKSTATIONS
• BROADCAST STUDIO EQUIPMENT
• GENERAL DIGITAL AUDIO PROCESSING
U.S. Patent No. 7,262,716.