C-1
APPENDIX
C
Functional Description
This appendix describes the inner workings of the Sun Blade 1500 workstation. Topic
include:
■ “Hardware Architecture” on page C-1
■ “Motherboard” on page C-4
■ “CPU and Memory” on page C-9
■ “Internal Interfaces and ASICs” on page C-15
■ “Graphics Accelerators” on page C-21
■ “System Clocks and Interrupts” on page C-28
■ “External Interfaces” on page C-31
■ “System Thermal Management” on page C-36
■ “System Power Management” on page C-38
C.1 Hardware Architecture
This section provides an overview of the Sun Blade 1500 workstation.
C.1.1 Component Overview
The Sun Blade 1500 workstation has four primary motherboard components:
■ “CPU” on page C-2
■ “I/O Bridge Chip” on page C-2
■ “I/O Subsystem” on page C-2
■ “Gigabit Ethernet” on page C-2