12.3 Signal Integrity Issues
Decoupling Capacitance
In order to regulate the transient current requirements of a R10000-based system, it is suggested that explicit decoupling capacitors be used. The R10000 package allows for the following capacitors:
The package also provides six connections for the PLL power supplies and loop capacitors.
VccPa (VccPd) is connected to VssPa (VssPd) through three decoupling capacitors, as shown in Figures 12-1 and 12-2. The 0.1mF and 1 nF low-inductance capacitors are placed in parallel with the 10 mF capacitor, as close to the R10000 package as possible.*1
Figure 12-1 Decoupling VccPa and VssPa
Figure 12-2 Decoupling VccPd and VssPd
Copyright 1995, MIPS Technologies, Inc. -- 29 JAN 96
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