CS4297 datasheet(43/46 Pages) CIRRUS

43 / 46 page

DS242F5

CS4297

CrystalClear™ SoundFusion™ Audio Codec ’97

Power Supplies

DVdd1, DVdd2 - Digital Supply Voltage

These pins provide the digital supply voltage for the AC-link section of the CS4297. These pins

may be tied to +5 V digital or to +3.3 V digital. The CS4297 and digital controller’s AC-link

should share a common digital supply

DVss1, DVss2 - Digital Ground

These pins are the digital ground connection for the AC-link section of the CS4297. These pins

should be isolated from analog ground currents.

AVdd1, AVdd2 - Analog Supply Voltage

These pins provide the analog supply voltage for the analog and mixed signal sections of the

CS4297. These pins must be tied to +5 Volt power supply. It is strongly recommended that +5

Volts be generated from a voltage regulator to ensure proper supply currents and noise

immunity from the rest of the system.

AVss1, AVss2 - Analog Ground

These pins are the ground connection for the analog, mixed signal, and substrate sections of the

CS4297. These pins should be isolated from digital ground currents.

REFERENCES

1) Intel, Audio Codec ‘97 Component Specifica-

tion, Revision 1.03, September 15, 1996.

http://developer.intel.com/pc-supp

/platform/ac97/

2) Cirrus Logic, CS4610 SoundFusion PCI Audio

Accelerator Data Sheet.

http://www.corp.cirrus.com/products/

overviews/cs4610.html

3) Cirrus Logic, CRD4610-1 AC’97 Motherboard

Reference Design Data Sheet.

http://www.cirrus.com/ftp/pubs/4610rd1.pdf

4) Steve Harris, Clif Sanchez, Personal Computer

Audio Quality Measurements, Ver 0.5

http://www.corp.cirrus.com/products/

papers/meas/meas.html

5) Microsoft, PC Design Guidelines,

http://www.microsoft.com/hwdev/desguid/

CS4297 Datasheet(PDF) 43 Page - Cirrus Logic