SMH4042 Datasheet, PDF (24/28 Pages) Summit Microelectronics, Inc. – Hot Swap™ Controller

SMH4042
Power Supply
PWR_EN
PCI_RST#
FAULT#
+12V
+12V and -12V
DRVREN#
-12V
MOSFETs
SMH4042
VGATE3
VGATE5
CBI_3
CBI_5
CARD_3V_MON
CARD_5V_MON
LOCAL_PCI_RST#
+5V and +3V
MOSFETs
+5V
+3.3V
HEALTHY#
[SGNL_VLD]
PCI Bus
BUFFERED PCI BUS
SLOT CONTROL
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
resident on the motherboard. The same circuits shown for
switching the voltages on the card can also be used for
controlling the slot voltages.
2037 ILL22.1
2037 8.0 8/8/00
24