LM4549 AC97 Codec

National Semiconductor

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.

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Datasheet Specifications

Part number: LM4549
Manufacturer: National Semiconductor
File Size: 324.10 KB
Datasheet: LM4549_NationalSemiconductor.pdf
Description: AC97 Codec

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

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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LM4549 AC97 Codec National Semiconductor

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