CD Player with ATM I/O for the HAN

Download PostScript version here.

Overview

This CD player performs all of the normal functions
of a CD player, but also has an ATM25 interface. When
in play mode, audio cells are generated as a CBR stream.
Infrared received by the unit is relayed over a separate
VCI and incoming commands on the same VCI and of the
same IR format are processed by the device.

Audio Specifications

Sample precision: 16 bit stereo
Sample rate: 44.1 ksps
Cell rate: 3675 cells per second.

ATM Cell Format

GFC=0, VPI=0, VCI= 48/49, PT=0, CLP=0
VCI=48 Payload=12 Samples of 16 bit audio
VCI=49 InfraRed in and Out.

Application Examples

Domestic HiFi
Radio Station
Background Music

The Warren Project

This CD player is an experimental
hardware device being developed at the University
of Cambridge Computer Laboratory as part of the
Warren Project. The Warren project is funded by Virata
and has the aim of developing a set of low-cost ATM devices,
including an ATM switch.

Pin Connections

RJ45 modular jack:
1 TX +
2 TX -
3 NC
4 NC
5 NC
6 NC
7 RX +
8 RX -
The ATM Warren Project
University of Cambridge
Computer Laboratory
New Museums Site
Pembroke Street
Cambridge CB2 3QG
http://www.cl.cam.ac.uk/Research/SRG/HAN