The WM978 AMR is an audio only daughter card implementation of the Intel Audio Modem Riser (AMR) Rev 1.1 specification . This card can also be used in systems supporting the ACR 1. specification.
The design supports the connectivity requirements of a typical sound card. Inputs include Line, CD (Mitsumi and Sony types) and Mic. Outputs include Line Out and Mono.
The Audio CODEC used in the design is the WM978 Rev 2.1 Stereo Audio CODEC . The WM978 is compliant with the Intel 2.1 AC?97 CODEC specification and supports split supplies and variable audio sample rates.
