Audio/modem riser
The audio/modem riser (AMR) is a riser expansion slot found on the motherboards of some Pentium III, Pentium 4, Duron, and Athlon personal computers. It was designed by Intel to interface with chipsets and provide analog functionality, such as sound cards and modems, on an expansion card.[1]
Technology
[edit]Physically, it has two rows of 23 pins, making 46 pins total.[2] Drawback of AMR is that it eliminates one PCI slot.[1]
Technologically, it has been superseded by the Advanced Communications Riser (ACR) and Intel's own communications and networking riser (CNR). However, riser technologies in general never really took off. Modems generally remained as PCI cards while audio and network interfaces were integrated on to motherboards.[citation needed]
The AMR interface utilized AC97 standard and AC-link, and it can connects audio codec.[3]
See also
[edit]References
[edit]- ^ a b "Definition of Riser Card". PC Magazine. Retrieved May 2, 2016.
- ^ "Audio Modem Riser (AMR)". Techopedia. Retrieved May 2, 2016.
- ^ https://www.itworkman.com/know-amr-and-cnr-slots/
Further reading
[edit]- "Audio/Modem Riser Specification" (PDF). Revision 1.01. Intel. September 10, 1998.