| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | LM4546 |  308Kb/18P | AC ??7 Rev 2 Codec with Sample Rate Conversion and National 3D Sound |
| LM4546 |  1Mb/18P | AC 97 Rev 2 Codec with Sample Rate Conversion and National 3D Sound |
 National Semiconductor ... | LM4546A |  1Mb/28P | AC 97 Rev 2 Multi-Channel Audio Codec with Sample Rate Conversion and National 3D Sound |
| LM4546AVH |  1Mb/28P | AC 97 Rev 2 Multi-Channel Audio Codec with Sample Rate Conversion and National 3D Sound |
 National Semiconductor ... | LM4546B |  908Kb/27P | AC ??7 Rev 2 Multi-Channel Audio Codec with Sample Rate Conversion and National 3D Sound |
 National Semiconductor ... | LM4546VH |  308Kb/18P | AC ??7 Rev 2 Codec with Sample Rate Conversion and National 3D Sound |
| LM4546VH |  1Mb/18P | AC 97 Rev 2 Codec with Sample Rate Conversion and National 3D Sound |
| LM4546 |  1Mb/18P | AC 97 Rev 2 Codec with Sample Rate Conversion and National 3D Sound |