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LM4549 - AC97 Codec

LM4549 Description

LM4549 AC ’97 Rev 2.1 Codec with Sample Rate Conversion and National 3D Sound February 1999 LM4549 AC ’97 Rev 2.1 Codec with Sample Rate Conversion .
The LM4549 is an audio codec for PC systems which is fully PC98 compliant and performs the analog intensive functions of the AC97 Rev2.

LM4549 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. The codec features a second Line Output known as True Line Level Out that is identical to Line Out but with independent volume control. The LM4549 al

LM4549 Applications

* n Desktop PC Audio Systems on PCI cards, AMR cards, or with motherboard chips sets featuring AC-Link n Portable PC Systems as on MDC cards, or with a chipset or accelerator featuring AC-Link Block Diagram DS101035-1 FIGURE 1. LM4549 Block Diagram © 1999 National Semiconductor Corporation DS1010

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National Semiconductor LM4549-like datasheet