Power Ramping - Kontron CP6500-V User Manual

CP6500-V
2.2.19.6

Power Ramping

On the CP6500-V a special hot swap controller is used to ramp up the onboard supply voltage.
This is done to avoid transients on the +3.3V, +5V, +12V and -12V power supplies from the hot
swap system. When the power supply is stable, the hot swap controller generates an onboard
reset to put the board into a definite state.
2.2.19.7 Precharge
Precharge is provided on the CP6500-V by a resistor on each signal line (PCI bus), connected
to a +1V reference voltage.
2.2.19.8 Handle Switch
A microswitch is situated in the extractor handle. Opening the handle initiates the generation
of a local interrupt (produced by the onboard logic). The microswitch is routed to J11 on the
board.
2.2.19.9 ENUM# Interrupt
The onboard logic generates a low active interrupt signal to indicate that the board is about to
be extracted from the system or inserted into the system. This interrupt is only generated in the
peripheral master configuration. In system master configuration the ENUM signal is an input.
2.2.19.10 Hot Swap LED
On the CP6500-V a blue HS LED can be switched on or off by software. It may be used, for
example, to indicate that the shutdown process is finished and the board is ready for extraction.
ID 28945, Rev. 01 © 2005 Kontron Modular Computers GmbH
Functional Description
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