Figure 4 At Style Boot - Portwell PCOM-B657VGL User Manual

COM Express™
⚫ AT Power Sequence
T
PSR
©
Copyright PORTWELL 2021
T
MP1

Figure 4 AT style boot

(Reference from COM Express
PCOM-B657VGL User's Guide
PORTWELL PCOM-B657VGL User's Guide
VCC_5V_SBY (Optional) (May be tied to VCC_5V)
VCC_12V (To CEX)
PWR_BTN# (To CEX) (Optional)
SUS_S3# (From CEX)
VCC_5V
VCC_3V3
PWR_OK (To CEX)
Module Internal Power Rails
SYS_RESET# (To CEX) (Optional)
CB_RESET# (From CEX)
PCI_RESET# (From CEX)
BIOS Starts
® Carrier Design Guide)
For Carrier Board use
(not needed by Module)
19