參數(shù)資料
型號(hào)： TLC320AD80C
廠商： Texas Instruments, Inc.
英文描述： Audio Processor Subsystem
中文描述： 音頻處理器子系統(tǒng)
文件頁(yè)數(shù)： 6/36頁(yè)
文件大?。?/td> 219K
代理商： TLC320AD80C
1–1
1 Introduction
The TLC320AD80 is an audio processing subsystem designed to meet the audio needs of a broad range
of set-top box applications. This device includes a high-performance stereo audio DAC, analog volume and
balance control, analog TV monaural decoder, de-emphasis filter, and an analog wide-band multiplexer.
The sigma-delta DAC performs data conversion with 85-dB performance. The architecture provides much
flexibility, giving the user the option to use all or a subset of the functional blocks.
There are two serial digital interfaces for digital audio data and four analog audio inputs. The analog output
of the device can be selected to be the output of the DAC, the output of the TV baseband filter, or
pass-through of one of the analog inputs.
The digital interfaces enable ease of use by providing compatibility with the industry standard I
2
S digital
audio port, and with the SPI
serial control interface. In addition, the digital audio interface supports
additional interface protocols.
1.1
Features
Highly Integrated Analog Audio Functions
Flexible Architecture Allows Variable Interconnects Between Functions
Sigma-Delta DAC With 16-Bit Resolution and 82-dB Performance Typical
Internal Monaural Decoder for TV Baseband Audio
Four Analog Audio Inputs: Two Stereo and Two Mono
Volume and Balance Control: 69 Step at 1 dB per Step With Mute
Selectable 50/15 ms De-Emphasis Analog Filter
Uncommitted Wide-Band Analog 2:1 Multiplexer
Multiplexed Analog Output can Select the Output of the DAC or Analog Data Pass-Through From
One of the Analog Audio Inputs
Two Flexible Digital Serial Data Ports (Philips I
2
S Protocol, Left-Justified, and Right-Justified
Formats)
SPI Bus-Compatible Serial Control Port
Sample Rates Supported in DAC: 8 kHz to 48 kHz
Digital Serial Ports Support 16-Bit or 18-Bit PCM Digital Audio Data Format
Analog Stereo Inputs can be Configured as Mono Inputs Through the Left Channel
Analog Output With 600-
Load Drive and Short Circuit Protection
Internal Voltage Reference
TTL/CMOS Compatible
Single 5-V Power Supply, 64-Pin TQFP Package
SPI
is a trademark of Motorola Inc.
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