Specifications

Ref# 420826 Intel
®
Atom™ processor CE4100 27
Platform Design Guide
Intel Confidential
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This chapter provides an example for board power delivery of an Intel
®
Atom™ processor
CE4100-based platform. There are many power distribution methods that achieve similar
results. It is critical to completely analyze the effects of any changes, and design
accordingly if deviating from this example.
4.1 Platform Power Rails
The Intel® Atom™ processor CE4100 requires up to 5 externally supplied voltages, 3.3V,
1.8V, and 1.5V, 1.05V and core power 0.95V – 1.05V.
• Power planes or shapes are recommended for the major voltages rails on board.
• More power rails (such as 5V for HDMI and USB and 3.3STANDBY for PIC24 chip on
board) might be needed based on the platform design requirements.
Power rails on the Intel® Atom™ processor CE4100 Development Platform:
o DDR2 based platform:
• Core Power 0.95V - 1.05V
• 0.9V VTT
• Fixed I/O 1.05V
• Core PLL 1.5V
• 5V
• 3.3V
• 1.8V (including DDR2 DRAM 1.8V)
• 3.3VSTANDBY
o DDR3 based platform:
• Core Power 0.95V - 1.05V
• 0.75V VTT
• Fixed I/O 1.05V
• Core PLL 1.5V (including DDR3 DRAM 1.5V)
• 5V
• 3.3V
• 1.8V
• 3.3VSTANDBY