Mobile Intel Pentium 4 Processor - M and Intel 845MP/MZ Chipset Platform Design Guide

Mobile Intel
®
Pentium
®
4 Processor-M and Intel
®
845MP/845MZ Chipset Platform
44 Design Guide
R
Figure 16. Example Component Placement for PLL Filter
4.4. Voltage and Current
A mobile processor core regulator supplies the required voltage and current to a single processor. Refer
to the
IMVP-III Mobile Processor Core Voltage Regulator Specification Design Guide (contact your
Field Representative) for the load line specification and implementation features.
4.4.1. Voltage Identification
Refer to the IMVP-III Mobile Processor Core Voltage Regulator Specification Design Guide (contact
your Field Representative) for the load line specification and implementation features.
4.4.2. V
CC
Power Sequencing
4.4.2.1. Core Converter Soft Start Timer
The main purpose of a soft start timer is to control the ramp-up time of the core voltage in order to
reduce the initial in-rush current on the supply input voltage (battery) rail. The soft start circuit must not
allow the V
CC
power plane voltage to rise too fast.
4.4.2.2. Power On/Off Sequencing
For more information please refer to the IMVP-III Mobile Processor Core Voltage Regulator
Specification Design Guide
for the actual specifications (contact your Field Representative).