System Block Diagrams; Figure 1-5 System Architecture Block Diagram; Section 1.10, "System Block Diagrams - Sun Microsystems Sun Fire E25K Service Manual

1.10

System Block Diagrams

FIGURE 1-5
FIGURE 1-6
boards to the individual power supplies and the fan trays.
FIGURE 1-7
48 VDC power distribution from the individual power supplies to the various
boards through the designated circuit breakers.
Full bandwidth (4.8 GBps) board type
• 4 CPU / 4 memory banks
FIGURE 1-5
1-14 Sun Fire E25K/E20K Systems Service Manual • April 2004
defines the Sun Fire E25K/E20K systems architecture.
defines the power control system circuitry from the System Control
defines the power distribution circuitry. This diagram represents the
Full-width
board
Expander
board
Half-width
board
System Architecture Block Diagram
18 x 18 addresses,
responses, and
data crossbars
on Logic Centerplane
Address
Response
Data
3 half bandwidth (2.4 GBps) board types
• 4 PCI adapters
• 2 CPU / 0 memory banks
• 2 PCI adapters / 3 WCI links
Full-width
board
Expander
board
Half-width
board