CS4239 Datasheet, PDF (79/98 Pages) Cirrus Logic – CrystalClear™ Portable ISA Audio System

CS4239
CrystalClear^TM Portable ISA Audio System
Speaker Out CD-ROM
Speaker In
Analog Ground
Crystal
Part
1
Digital Ground
Figure 24. Suggested Add-In Card Layout
PIN 1
PIN 98
VDF3
.1µF
PIN 97
SGND3
PIN 80
AGND
PIN 81
VA
.1µF
1µF
+ _{PIN 79}
.1µF ^REFFLT
PIN 17
VDF1
.1µ F
PIN 18
SGND1
Analog
Digital
= ^{vias through to}
power/ground plane
PIN 71
TEST
PIN 66
SGND2
.1µF
PIN 65
VDF2
PIN 53
SGND4
PIN 45
VD1
.1µF
PIN 46
DGND1
Figure 25. Recommended Decoupling Capacitor Positions
DS253PP2
79