Kontron COMe Starterkit Eval T2 Instrukcja Użytkownika Pobierz pdf (Strona 158)

Power and Reset

3.2.3. ATX and AT Power Sequencing Diagrams

A sequence diagram for an ATX style boot from a soft-off state (S5), initiated by a power button

press, is shown in Figure 64 below.

A sequence diagram for an AT style boot from the mechanical off state (G3) is shown in Figure

65 below below.

In both cases, the VCC_12V, VCC_5V and VCC_3V3 power lines should rise together in a

monotonic ramp with a positive slope only, and their rise time should be limited. Please refer to

the ATX specification for more details.

PICMG

COM Express

Carrier Board Design Guide Rev. 2.0 / December 6, 2013

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