Audio Modem Riser

Audio Modem Riser ( lateinisch.: audire > hear Modem> modulate / demodulate, English: Rise > Rise, rise ) is an interface on the main board of some computers for the cost-effective realization of the input and output of voice and sound and for the analog data transmission.

By 2000, the Intel on the idea of ​​realizing only the most essential functions of analog inputs and outputs with hardware, the audio codec 97 The developers went on the theory that the former and later processors have adequate capacity, a majority of the required calculations to do with. These specified the Intel AC97 and the AMR slot for the input and output of audio and modem data.

The integration on the motherboard can be very different. In one of the most common variations are all components for the audio processing on the motherboard, AC97 controller, the primary AC-97 codec and connectors for their peripherals. For the modem function of a corresponding modem riser card with the secondary modem codec as well as the phone plug is needed. Boards with lower integration have only the AC97 controller and the AMR slot. For both the sound and the modem function of the AMR slot is to be fitted with a corresponding expansion card. It can be combined on the map and modem, and sound processing. There are also motherboards have no AMR slot, since everything is already integrated on the board. However, the producers still benefit from the favorable standard chips for AC97.

  • Peripheral bus (internal)
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