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參數(shù)資料
| 型號： | LM4548AVH/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | 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： | 538K |
| 代理商： | LM4548AVH/NOPB |
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Multiple Codecs (Continued)
Test Modes
AC ’97 Rev 2 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.
20030023
FIGURE 9. Multiple Codecs using Extended AC Link
LM4548A
www.national.com
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PDF描述 |
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| LM4548VHX | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| LM4548VH/NOPB | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| LM4548VHX/NOPB | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| LM4549AVH/NOPB | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4548AVHX | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM4548VH | 制造商:Texas Instruments 功能描述: |
| LM4549 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:AC ’97 Rev 2.1 Codec with Sample Rate Conversion and National 3D Sound |
| LM4549A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:AC ’97 Rev 2.1 Codec with Sample Rate Conversion and National 3D Sound |
| LM4549AVH | 制造商:Rochester Electronics LLC 功能描述:AC97 REV2.1 CODEC - Bulk 制造商:OC White Company 功能描述:Audio Codec 2ADC / 2DAC 18-Bit 48-Pin LQFP Tray |
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