Cisco C3230-1W-49-K9 Hardware Guide - Page 46

Chapter 3 Mobile Access Router Card The PCI bus connector supports communication between the Serial Mobile Interface Card (SMIC), the Fast Ethernet Switch Mobile Interface Card (FESMIC), and the Mobile Access Router Card. The Wireless Mobile Interface Card (WMIC) communicates with the router through an internal Fast Ethernet port and is configured through an independent console port; the WMIC only draws power from the bus. MARC Component Systems The industry-standard architecture (ISA) buses and peripheral component interconnect (PCI) buses on the Cisco 3200 Series Mobile Access Router cards provide power to the components on the cards. Both buses comply with the PC/104-Plus standard. The ISA bus allows PC/104-Plus ISA signals to pass through the card bus, but the Cisco cards do not use any of the signals. Caution If you add non-Cisco cards that generates signal on the PCI bus, the router might shut down. Please do not add non-Cisco cards that generate signals on the PCI bus. Figure 3-1 shows the MARC header and bus locations. Figure 3-1 MARC Header and Bus Locations 1 2 74518 4 3 1 PCI bus 3 Ethernet header 2 ISA bus 4 Multifunction header Note The PC/104-Plus standard requires that the PCI Bus and the ISA bus use keying features in the standard stacking headers to guarantee proper module installation. On the PCI bus, pin D30 is removed and the D30 opening is plugged. On the ISA bus, pin C19 and B10 are removed, and the C19 and B10 openings are plugged. Cisco 3200 Series Router Hardware Reference 3-2 OL-5816-10