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C.1.3.5
Gigabit Ethernet
10/100/1000BASE-T Ethernet LAN controller
Integrated MAC and PHY
TABLE C-1
TABLE C-1
LED
Green - Link
Amber - Activity
C.2
Motherboard
This section describes more details about the motherboard and some components.
C.2.1
Motherboard Block Diagram
FIGURE C-3
Note – The Sun Ultra 25 workstation motherboard has one CPU (CPU0) and one
bank of four DIMM slots. Other aspects of the Sun Ultra 25 are the same as the Sun
Ultra 45 workstation.
describes the behavior of the Ethernet status LEDs.
Twisted-Pair Ethernet LED Status
Status
When illuminated, a link exists.
When flashing, indicates transmit or receive activity.
shows the block diagram for the Sun Ultra 45 motherboard.
Appendix C Functional Description
C-5
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