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2 atx power diagram, 3 atx power on timing, Figure 5-3: atx power delivery block diagram – IEI Integration ICE-DB-9S User Manual

Page 105: Figure 5-4: atx power on sequence

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ICE Module

Page 92

5.4.2 ATX Power Diagram

ATX Power

Source

COM-Express

Module

LD

O

+3.3VSB

+12V

+5VSB

Battery(3.3V)

+5V

+3.3V

-12V

-5V

Figure 5-3: ATX Power Delivery Block Diagram

6.3.3 ATX Power On Timing

T0

T1

T2

T3 T4 T5 T6

T7

T8

+VBAT(3.3V)

+V5SB

PWR_BTN#

SUS_S3#

PS_ON#

+V12

+V5,+V3.3

ICE Power Rail

CB_RESET#

PCI_RESET#

BIOS Starts

Figure 5-4: ATX Power On Sequence