Datasheet Details
- Part number
- LM4549
- Manufacturer
- National Semiconductor
- File Size
- 324.10 KB
- Datasheet
- LM4549_NationalSemiconductor.pdf
- Description
- 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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