GE CM6 Hardware Reference Manual page 66

CHAPTER 7
PCB
Size
Dimensions
Weight
Voltage Requirements
GE Intelligent Platforms – CM6 Hardware Reference Manual, Fourth Edition
Specifications
FR4 Multilayer
UL V94-0
Total board size: 3U, 4 HP
PCB: 100 mm x 178 mm x 20 mm
commercial style
conduction cooled style
The CM6 requires +5 V and +3.3 V power. To avoid power sequencing
problems the two power rails are controlled by MOSFET power switches. The
internal power is switched on when the +5 V and +3.3 V reach the minimum
voltage and the cPCI signal BDSEL# (cPCI-J1 pin D15) is low. The MOSFET
power control limits also the in-rush current for the +5 V and +3.3 V. All other
internal voltages are derived from +3.3 V and 5.0 V and are controlled internal
for correct sequencing.
+12 V and -12 V are not required except if the PMC requires these voltages or
the "Flash Kill" option (+12V) is provided. +12V and -12V voltages are not
sequencing controlled.
460 g
480 g
Page 65