CDB4270開發(fā)板套件編程器的評估演示板及套件規(guī)格書PDF中文資料

CDB4270屬于開發(fā)板套件編程器的評估演示板及套件。由凌云邏輯制造生產(chǎn)的CDB4270評估和演示板及套件該系列產(chǎn)品提供了一種方便的方法，在經(jīng)過驗證的實施環(huán)境中評估某些重點器件的性能或特性。評估方法通常有完善的文檔說明，并且視乎具體情況由評估軟件提供支持。產(chǎn)品通常由印刷電路板組成，板上已裝有重點器件以及必要或有用的支持元器件，另外也可能包括其他組件，例如電纜或電源。對于數(shù)量特別多或類別獨特的器件類別(如 ADC、DAC 和開關(guān)模式電源)，評估平臺可組合為一個單獨的產(chǎn)品系列。

General Description

The CS4270 is a high-performance, integrated audio CODEC. The CS4270 performs stereo analog-to-digital (A/D) and digital-to-analog (D/A) conversion of up to 24-bit serial values at sample rates up to 216 kHz. Standard 50/15 μs de-emphasis is available for sampling rates of 44.1 kHz for compatibility with digital audio programs mastered using the 50/15 μs pre-emphasis technique.

Integrated level translators allow easy interfacing be tween the CS4270 and other devices operating over a wide range of logic levels.

Independently addressable high-pass filters are available for the right and left channel of the A/D. This allows the A/D to be used in a wide variety of applications where one audio channel and one DC measurement channel is desired.

D/A Features

? High Performance

– 105 dB Dynamic Range

– -95 dB THD+N

? Selectable Serial Audio Interface Formats

– Left-Justified up to 24-bit

– I2S up to 24-bit

– Right-Justified 16-, and 24-Bit

? Control Output for External Muting

? On-Chip Digital De-Emphasis

? Popguard? Technology

? Multi-bit ?Σ Conversion

? Digital Volume Control

? Single-Ended Output

A/D Features

? High Performance

– 105 dB Dynamic Range

– -95 dB THD+N

? Multi-bit ?Σ Conversion

? High-Pass Filter to Remove DC Offsets

? Selectable Serial Audio Interface Formats

– Left-Justified up to 24-bit

– I2S up to 24-bit

? Single-Ended Input

System Features

? Direct Interface with Logic Levels 1.8 V to 5 V

? Internal Digital Loopback

? Stand-Alone or Control Port Functionality

? Single-Ended Analog Architecture

? Supports all Audio Sample Rates from 4 kHz to 216 kHz

? 3.3 V or 5 V Core Supply

Stand-Alone Mode Feature Set

? System Features

– Serial Audio Port Master or Slave Operation

– Single-, Double-, or Quad-Speed Operation

? D/A Features

– Auto-Mute on Static Samples

– 44.1 kHz 50/15 μs De-emphasis Available

– Selectable Serial Audio Interface Formats

? Left-Justified up to 24-bit

? I2S up to 24-bit

? A/D Features

– High-Pass Filter

– Selectable Serial Audio Interface Formats

? Left-Justified up to 24-bit

? I2S up to 24-bit

Software Mode Feature Set

? System Features

– Serial Audio Port Master or Slave Operation

– Internal Digital Loopback Available

? D/A Features

– Selectable Auto-mute

– 44.1-kHz De-emphasis Filters

– Configurable Muting Controls

– Volume Control

– Selectable Serial Audio Interface Formats

? Left-Justified up to 24-bit

? I2S up to 24-bit

? Right-Justified 16, and 24-bit

? A/D Features

– Selectable High-Pass Filter or DC Offset Calibration

– Selectable Serial Audio Interface Formats

? Left-Justified up to 24-bit

? I2S up to 24-bit