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LM4543 - AC97 Codec

LM4543 Description

LM4543 AC ’97 Codec with National 3D Sound February 1999 LM4543 AC ’97 Codec with National 3D Sound General .
The LM4543 is an audio codec for PC systems which performs the analog-intensive function of the Analog Codec ’97 Rev 1.

LM4543 Features

* full duplex stereo A/D’s and D/A’s and an analog mixer with 4 stereo and 3 mono inputs, each of which has separate gain, attenuation and mute control. In addition, the LM4543 provides National’s 3D Sound stereo enhancement technology. The LM4543 features AC-Link, a synchronous, fixed rate serial bus

LM4543 Applications

* n Desktop PC Audio Systems n Portable PC Audio Systems n Mobile PC Audio Solutions Block Diagram DS100907-1 FIGURE 1. LM4543 Block Diagram © 1999 National Semiconductor Corporation DS100907 www. national. com Absolute Maximum Ratings (Note 3) If Military/Aerospace specified devices are required

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AC97 Codec National Semiconductor
National Semiconductor LM4543-like datasheet