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參數(shù)資料
| 型號： | LM4549BVH/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | LM4549B AC '97 Rev 2.1 Multi-Channel Audio Codec with Sample Rate Conversion and National 3D Sound; Package: LQFP; No of Pins: 48; Qty per Container: 250/Tray |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| 封裝： | 7 X 7 MM, 1.40 MM HEIGHT, LQFP-48 |
| 文件頁數(shù)： | 20/28頁 |
| 文件大小： | 927K |
| 代理商： | LM4549BVH/NOPB |
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Multiple Codecs (Continued)
Test Modes
AC ’97 Rev 2.1 defines two test modes: ATE test mode and
Vendor test mode. Cold Reset is the only way to exit either of
them. The ATE test mode is activated if SDATA_OUT is
sampled high by the trailing edge (zero-to-one transition) of
RESET#. In ATE test mode the codec AC Link outputs
SDATA_IN and BIT_CLK are configured to a high imped-
ance state to allow tester control of the AC Link interface for
controller testing. ATE test mode timing parameters are
given in the Electrical Characteristics table. The Vendor test
mode is entered if SYNC is sampled high by the zero-to-one
transition of RESET#. Neither of these entry conditions can
occur in normal AC Link operation but care must be taken to
avoid mistaken activation of the test modes when using non
standard controllers.
20123523
FIGURE 9. Multiple Codecs using Extended AC Link
LM4549B
www.national.com
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM4549BVHX/NOPB | LM4549B AC '97 Rev 2.1 Multi-Channel Audio Codec with Sample Rate Conversion and National 3D Sound; Package: LQFP; No of Pins: 48; Qty per Container: 1000/Reel |
| LM4550BVH/NOPB | LM4550B AC '97 Rev 2.1 Multi-Channel Audio Codec with Stereo Headphone Amplifier, Sample Rate Conversion and National 3D Sound; Package: LQFP; No of Pins: 48; Qty per Container: 250/Tray |
| LM4550BVHX/NOPB | LM4550B AC '97 Rev 2.1 Multi-Channel Audio Codec with Stereo Headphone Amplifier, Sample Rate Conversion and National 3D Sound; Package: LQFP; No of Pins: 48; Qty per Container: 1000/Reel |
| LM4562NA/NOPB | LM4562 Dual High Performance, High Fidelity Audio Operational Amplifier; Package: MDIP; No of Pins: 8; Qty per Container: 40/Rail |
| LM45BIM3/NOPB | LM45 SOT-23 Precision Centigrade Temperature Sensors; Package: SOT-23; No of Pins: 3; Qty per Container: 1000/Reel |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4549BVHX | 功能描述:接口—CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| LM4549BVHX/NOPB | 功能描述:接口—CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| LM4549VH | 制造商:Texas Instruments 功能描述: |
| LM4549VHX | 制造商:Texas Instruments 功能描述: |
| LM4550 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:AC ’97 Rev 2.1 Multi-Channel Audio Codec with Stereo Headphone Amplifier, Sample Rate Conversion and National 3D Sound |
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