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1998 Burr-Brown Corporation
LI-523A
Printed in U.S.A. December, 1998
International Airport Industrial Park Mailing Address: PO Box 11400, Tucson, AZ 85734 Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 Tel: (520) 746-1111 Twx: 910-952-1111
Internet: http://www.burr-brown.com/ FAXLine: (800) 548-6133 (US/Canada Only) Cable: BBRCORP Telex: 066-6491 FAX: (520) 889-1510 Immediate Product Info: (800) 548-6132
FEATURES
G
DIGITAL AUDIO RECEIVER AND TRANSMITTER
SUPPORTS S/PDIF DIGITAL AUDIO INTERFACE
(both RCA coaxial cable and optical connections)
G
PROGRAMMABLE SYSTEM CLOCK SOURCE:
Digital Audio Receiver or Crystal Oscillator
G
PROGRAMMABLE SYSTEM CLOCK RATE: 256f
S
,
384f
S
, or 512f
S
G
NORMAL OR INVERTED SYSTEM CLOCK INPUT
FOR DIGITAL AUDIO TRANSMITTER
G
MASTER OR SLAVE MODE OPERATION
G
RECEIVER AND TRANSMITTER MODE SELEC-
TION VIA TOGGLE SWITCHES
G
DIP SWITCH FOR SETTING DIGITAL TRANSMIT-
TER FLAGS
G
HEADER CONNECTIONS ACCEPT DEM-PCM
DEMO BOARDS
G
RCA JACKS FOR STEREO AUDIO INPUTS AND
OUTPUTS
G
ON-BOARD STEREO DAC POST FILTER
G
POWER SUPPLY CONNECTOR FOR DIGITAL
AND ANALOG POWER SUPPLIES
G
OPERATES FROM A SINGLE +5V SUPPLY FOR
THE DIGITAL AUDIO INTERFACE SECTION
G
DAC POST FILTER OPERATES FROM
±
5V TO
±
15V
DEM-DAI
EVALUATION FIXTURE
DESCRIPTION
The DEM-DAI demonstration board provides a standard
platform for evaluating Burr-Brown digital audio prod-
ucts including stereo DAC, ADC and CODEC devices.
The DEM-DAI board includes a digital audio receiver
and transmitter, along with their associated support
circuitry. The receiver and transmitter accept and output
S/PDIF digital audio streams via RCA and optical con-
nections. The DEM-DAI board also includes an on-
board crystal oscillator/divider circuit for generating the
required audio clocks independent of the digital audio
receiver.
In addition to the digital audio interface and timing
circuits, there are connectors for DEM-PCM demo
boards, power supplies, and stereo audio inputs and
outputs. On-board switches and jumpers are used to
configure the DEM-DAI board for use with a variety of
DEM-PCM demo boards. An on-board DAC post filter
circuit is also included and is located near the stereo
audio output connectors.