Introduction
1-5
1.5. INTRODUCE THE INTEL
Celeron
TM
Socket 370 Processor
Figure 1: INTEL
Celeron
TM
Socket370 Processor
1.6 INTRODUCE AMR
The Audio Modem Riser (AMR) is a new port that supports both audio and
modem. The main purpose of the AMR port is to provide lower cost and higher
levels of integration at all levels of the PC platform.
The backbone of the AMR interface is on AC’97 compliant AC-Link with support
for codes. Motherboard support for an AMR interface are not only capable of
achieving the lowest possible cost for basic PC audio and modem, but have
also introduced increased motherboard flexibility enabling robust, cost
effective scalability.
The AMR is done through software and controlled by the motherboard’s I/O
Controller Hub (ICH). There are two types of AMR, one defined as primary and
another defined as secondary. If the motherboard with onboard sound Aureal
AU8810, the AMR must be used primary.