hp workstations zx6000, hp server rx2600 - operation and maintenance guide

System Board
System Board Components
Appendix B
180
System Board Components
This section covers the main components (chips) that make up the system board.
Overview of System Board Components
Here is a list of those components.
• Processor
• I/O and Memory Controller
• I/O Bus Interface
• Processor Dependent Hardware Controller
• Dual Serial Controller
• Field Processor Gate Array Controller
• Baseboard Management Controller
• SCSI Controller
• IDE Interface
• 10/100BT Standard/Management LAN
Before you start reading about the system components listed above, you should be
familiar with the term ropes.
Ropes are associated with the I/O and memory controller chip and are used as buses for
I/O devices and expandability. The I/O devices have:
• One rope that provides the PCI 66MHz/64bit bus for the core 1GB LAN and U320
SCSI
• One rope that provides the PCI 33MHz/32-bit bus for the I/O connections, such as
USB, IDE and 100MB LAN.
For the ropes that provide expandability, there is/are:
• One rope that connects to the Management Processor card.
• Five ropes that are connected to the PCI/AGP riser or PCI riser.
The PCI and AGP risers use single ropes for three PCI-X 133 slots and one double for
either the AGP 4× slot or an additional PCI-X 133 slot. The slots behind a single rope are
limited to the 533MB/second maximum bandwidth.