SRC4392中文资料高端组合采样速率转换器数据手册TI规格书

描述 Description

The SRC4392 is a highly-integrated CMOS device designed for use in professional and broadcast digital audio systems. The SRC4392 combines a high-performance, two-channel, asynchronous sample rate converter (SRC) with a digital audio interface receiver (DIR) and transmitter (DIT), two audio serial ports, and flexible distribution logic for interconnection of the function block data and clocks. The DIR and DIT are compatible with the AES3, S/PDIF, IEC 60958, and EIAJ CP-1201 interface standards. The audio serial ports, DIT, and SRC may be operated at sampling rates up to 216kHz. The DIR lock range includes sampling rates from 20kHz to 216kHz. The SRC4392 is configured using on-chip control registers and data buffers, which are accessed through either a 4-wire serial peripheral interface (SPI) port, or a 2-wire Philips I2C bus interface. Status registers provide access to a variety of flag and error bits, which are derived from the various function blocks. An open drain interrupt output pin is provided, and is supported by flexible interrupt reporting and mask options via control register settings. A master reset input pin is provided for initialization by a host processor or supervisory functions. The SRC4392 requires a +1.8V core logic supply, in addition to a +3.3V supply for powering portions of the DIR, DIT, and line driver and receiver functions. A separate logic I/O supply supports operation from +1.65V to +3.6V, providing compatibility with low voltage logic interfaces typically found on digital signal processors and programmable logic devices. The SRC4392 is available in a QFN-40 and a lead-free, TQFP-48 package. The TQFN-48 is pin- and register-compatible with the Texas Instruments SRC4382 and DIX4192 products.

特性 Features

• Two-Channel Asynchronous Sample Rate Converter (SRC)
• Total Harmonic Distortion and Noise (THD+N) with Full-Scale Input: –140dB typical
• Supports Input and Output Sampling Frequencies Up to 216kHz
• Wide Input-to-Output Conversion Range:16:1 to 1:16 Continuous
• Digital De-Emphasis Filtering for 32kHz, 44.1kHz, and 48kHz Input Sampling Rates
• Output Word Length Reduction
• Digital Audio Interface Transmitter (DIT)
• Includes Differential Line Driver andCMOS Buffered Outputs
• Status Registers and Interrupt Generation for Flag and Error Conditions
• User-Selectable Serial Host Interface: SPI or Philips I2C™
• Digital Audio Interface Receiver (DIR)
• Includes Four Differential Input Line Receivers and an Input Multiplexer
• Block-Sized Data Buffers for Both Channel Status and User Data
• Audio CD Q-Channel Sub-Code Decoding and Data Buffer
• Low Jitter Recovered Clock Output
• Two Audio Serial Ports (Ports A and B)
• Slave or Master Mode Operation with Sampling Rates up to 216kHz
• Supports Audio Data Word Lengths Up to24 Bits
• Four General-Purpose Digital Outputs
• Extensive Power-Down Support
• Operates From +1.8V Core and +3.3V I/O Power Supplies
• QFN-40
• Small TQFP-48 Package, Compatible with the SRC4382 and DIX4192