rtd cpuModules CME34BT, User Manual, Page: 59 / 110

BDM-610000088 Rev A Chapter 3: Connecting the cpuModule 51
Figure 6 Locations of 5V and 12V Power Blades
PCIe/104 Type 2 Compatibility
The PCIe/104 Type 2 connector is compatible with any PCI/104-Express or PCIe/104 peripheral module
that does not use the x16 Link. This includes any card that uses the PCIe x1 links, USB, or a power supply.
In addition, this connector can be used to add SATA devices to the system.
If a card is installed that is not compatible with the Type 2 connector, the CPU will keep the system in
soft-off, and the LED will be Cyan to indicate that there is a Bus Stacking Error.
PCIe Link Configuration
This cpuModule supports a total of four PCIe x1 links for system expansion, all of which are on the
bottom-side PCIe/104 connector,
CN2
. Three of the links on
CN2
are connected directly to the chipset. The
fourth link is connected through a PCIe packet switch, which shares the bandwidth of a single x1 link back
to the chipset with the onboard PCIe-to-PCI bridge and the gigabit Ethernet controller. Table 25 below
shows the configuration of the PCIe x1 links on CN1 and CN2.
Table 25 CN2 Link Configuration
Link Location Connection
Link 3 Closest to CPU Direct
Link 2 Direct
Link 1 Direct
Link 0 Farthest from
CPU
Shared
5V Blade
5V Blade
12V Blade