1. Introduction
15
When used in accordance with the
CompactPCI Packet Switching Backplane Specification,
PICMG 2.16, Version 1.0
, the ZT 5504 functions as a "Dual Link Port Node" board. The
ZT 5504 can be connected to a system's fabric-switched Link Ports A and B, and can be
inserted into system or peripheral slots. The ZT 5504 is keyed for insertion into compatible
slots.
The "
CompactPCI
" topic in Appendix E contains a link to the PCI Industrial Computer
Manufacturers Group.
Processor
The ZT 5504 uses the Mobile Pentium III Processor - M in a BGA2 package. The 0.18 micron
BGA2 package is a highly integrated assembly containing a mobile version of the Pentium III
processor and its immediate system-level support. This mobile processor runs at a lower
voltage than the desktop version.
The 256 KB on-die transfer L2 cache is integrated with the CPU, eliminating the need for
separate components and improving performance. The BGA2 package Pentium III processor
also operates with a 100 MHz Processor Side Bus for faster access to memory and data.
The "
Mobile Pentium III Processor - M in BGA2 Package
" topic in Appendix E contains a link to
the datasheet for the processor.
Chipset
The Intel 440GX AGPset consists of the 82443GX Host Bridge and the 82371EB (PIIX4E) I/O
subsystem chip. The Host Bridge includes an optimized SDRAM controller. The I/O subsystem
is a highly integrated PCI ISA IDE Xcelerator Bridge.
The "
Intel 440GX AGPset
" topic in Appendix E contains a link to information about the chipset.
PCI-to-PCI Bridge (P2P)
The ZT 5504 features one Intel® 21154 PCI-to-PCI bridge to support the
J1
/
J2
CompactPCI
buses. The bridge provides the isolation, arbitration, and clocks for seven PCI peripheral cards
without the need for an external bridge board.
Special features of the 21154 include:
•
33 MHz or 66 MHz PCI bus operation
•
Support for independent primary and secondary PCI clocks
•
64-bit PCI operation
The "
PCI-to-PCI Bridge
" topic in Appendix E contains a link to information about the chipset.
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