System Motherboard - Compaq AlphaServer ES45 1B Owner's Manual

1.7

System Motherboard

The system motherboard is located on the floor of the system card cage
and has the majority of the logic for the system.
The system motherboard has connectors for the CPUs and memory mother-
boards (MMBs) and a connector to the I/O subsystem. Figure 1–6 shows the
location of these modules on the motherboard.
Figure 1–6 System Motherboard Block Diagram
Connector to PCI Backplane
J34 MMB3
J33 MMB2
J32 MMB1
MMB0
J31
1-12 ES45 Owner's Guide
CPU2
J18
CPU0
J17
CPU1
J16
CPU3
J15
Cterm
(VTerm_chk)
Vterm
(VTerm_data)
PK0323C