SMH4042
Power Supply
+12V
-12V
+12V and -12V
MOSFETs
DRVREN#
+5V
VGATE3
VGATE5
CBI_3
+5V and +3V
MOSFETs
+3.3V
CBI_5
SMH4042
CARD_3V_MON
CARD_5V_MON
LOCAL_PCI_RST#
PWR_EN
PCI_RST#
FAULT#
HEALTHY#
[SGNL_VLD]
PCI Bus
BUFFERED PCI BUS
SLOT CONTROL
2037 ILL22.1
Figure 13. High Level Block Diagram Implementation for a PCI Hot Plug Slot
Although the primary application for the SMH4042 is as a
voltage controller for CompactPCI or VME boards, it is
versatile enough to be used as a Hot Plug controller on a
host PCI card. The functional blocks are similar to those
of the CompactPCI implementation but they are now
residentonthemotherboard. Thesamecircuitsshownfor
switching the voltages on the card can also be used for
controlling the slot voltages.
2037 8.0 8/8/00
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SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
