EVAL-AD73322EB Datasheet, PDF (6/12 Pages) Analog Devices – EvaluationBoardforLowCost,LowPower, CMOSGerneralPurposeDualAnalogFrontEnd

EVAL-AD73322EB
FourChannels (a:\EZ_73322\multi\4in4out.exe)
This program configures a four codec cascade.
File(s) used are: \EZ_73322\multi\4in4out.dsp
Build using: \EZ_73322\multi\make.bat
NOTE: New demonstration programs and revised versions of existing programs will be available for download at Analog's
Website http://www.analog.com . Please search for the AD73322 page and choose either the Evaluation Tools or Related
Topics option.
GENERAL NOTES.
The number of devices configured in cascade is programmed using the PF4 and PF5 flag I/O bits from the ADSP-2181.
These bits are used to program a 74HC253 dual 4:1 multiplexer which selects the SDO/SDOFS combination from one
of the four possible AD73322 codecs on the evaluation board. The settings of PF4 and PF5 for each of the possible
cascade configurations is shown in the table below:
PF5
PF4
0
0
0
1
1
0
1
1
Table I. Program settings for cascade configurations
Cascade Selection
Single Codec
Two Codecs
Three Codecs
Four Codecs
–6–
REV. A