IBM 3301690 user manual Introduction

3301690 CPU Card

D.1 Introduction

The audio functionalities of the 3301690 CPU card can be implemented using a separately purchased audio module, the AC-KIT08R-R10. The audio kit is powered by a Realtek ALC655, which is a 16-bit, full duplex AC’97 2.3 compatible audio CODEC with 48KHz sampling rate. The audio kit functionalities are interfaced through three (3) phone jack connectors and two (2) pin headers including:

1.A LINE input shared with surround output

2.A MIC input shared with Center and LFE output

3.A LINE output

4.Analog line-level stereo inputs with 5-bit volume control: CDIN1 and AUXIN1. Both Front_out and Surround_out are equipped with a built-in 50mW/20ohm amplifier. The ALC655 supports host/soft audio from Intel ICHx chipsets as well as audio controller based VIA/SIS/Ali/ATI chipset with bundled Windows series drivers (XP/ME/2000/98/NT), EAX/Direct Sound 3D/I3DL2/A3D compatible sound effect utilities supporting Karaoke, 26 kinds of environment sound emulations with 10-band equalizer, and HRTF 3D positional audio. The audio kit provides an excellent entertainment package sufficient for today’s multimedia systems.

157