SMH4042 Datasheet, PDF (11/28 Pages) Summit Microelectronics, Inc. – Hot Swap™ Controller

SMH4042
VCC ≥ 1V
ASSERT
RESET
OUTPUTS
SHUT OFF
VGATE5
VGATE3
DRVREN#
HEALTHY#
SGNL-VLD#
BD_SEL1#
NO
&
BD_SEL2#
YES
VSEL
NO
HI ?
YES
NO
HOST
YES
3VOLT
OK?
HOST
NO
5V & 3V
OK?
YES
TURN-ON
VGATE5
VGATE3
DRVREN
CARD_5V_MON
NO
CARD_3V_MON
YES
START
TIMER
tPURST
TURN ON
HEALTHY#
tPURST
NO
TIMEOUT?
YES
PCI_RST#
NO
RELEASED?
YES
RELEASE
RESETS
Figure 1. Sequence Flow Diagram
11
TURN ON
SGNL_VLD
2037 ILL14.2
2037 8.0 8/8/00