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COM Express® Carrier Board Design Guide
2.19.2 Reference Schematics
2.19.2.1 Resource Allocation
Figure 32: PCI Bus Interrupt Routing
Table 24:
PCI Bus Interrupt Routing
Device Signal
Slot / Device 1
Slot / Device 2
Slot / Device 3
Slot / Device 4
IDSEL
PCI_AD[20]
PCI_AD[21]
PCI_AD[22]
PCI_AD[23]
INTA#
PCI_IRQ[A]#
PCI_IRQ[B]#
PCI_IRQ[C]#
PCI_IRQ[D]#
INTB# (if used)
PCI_IRQ[B]#
PCI_IRQ[C]#
PCI_IRQ[D]#
PCI_IRQ[A]#
INTC# (if used)
PCI_IRQ[C]#
PCI_IRQ[D]#
PCI_IRQ[A]#
PCI_IRQ[B]#
INTC# (if used)
PCI_IRQ[D]#
PCI_IRQ[A]#
PCI_IRQ[B]#
PCI_IRQ[C]#
Summary of Contents for ET976
Page 1: ...COM EXPRESS CARRIER BOARD DESIGN GUIDE Version 1 0 January 2022...
Page 11: ...COM Express Carrier Board Design Guide 5 Figure 3 PCI Express x4 Slot Example...
Page 12: ...6 COM Express Carrier Board Design Guide Figure 4 PCIe Mini Card Reference Circuitry...
Page 19: ...COM Express Carrier Board Design Guide 13 Figure 7 HDMI Example 1...
Page 20: ...14 COM Express Carrier Board Design Guide Figure 7 HDMI Example 2...
Page 21: ...COM Express Carrier Board Design Guide 15 Figure 8 DVI Example 1...
Page 22: ...16 COM Express Carrier Board Design Guide Figure 8 DVI Example 2...
Page 31: ...COM Express Carrier Board Design Guide 25 Figure 12 USB 3 0 Example 2...
Page 37: ...COM Express Carrier Board Design Guide 31 Figure 14 LVDS Reference Schematic 2...
Page 44: ...38 COM Express Carrier Board Design Guide Figure 16 VGA Reference Schematics 2...
Page 48: ...42 COM Express Carrier Board Design Guide Figure 18 HDA Example Schematic 2...
Page 52: ...46 COM Express Carrier Board Design Guide Figure 19 LPC Super I O Example 2...
Page 61: ...COM Express Carrier Board Design Guide 55 Figure 24 General Purpose Serial Port Example 2...
Page 70: ...64 COM Express Carrier Board Design Guide Figure 28 PWRBTN and SYS_RESET Circuitry...
Page 84: ...78 COM Express Carrier Board Design Guide Chapter 4 Carrier Board PCB Layout Guidelines...
