Mobile Pentium ® Ii / Iii Processor; North Bridge Chipset; 21154 Pci-To-Pci Bridge - Kontron cPCI-DMXS64GX Technical Reference Manual

The cPCI-DMXS64GX is not only a matter of computation power. The boards also provide
a high capability to interface with peripherals through three integrated chips:
Host-to-PCI bridge for. 443GX from Intel: interface with the processor (host),
system memory, video controller, and Primary PCI bus (3.3V / 33MHz).
PCI-to-PCI bridge - 21154 from Intel: manage the PCI bus signals on J1 and J2
CPCI connectors. When used with a CompactPCI backplane drives 7 CPCI slots.
PCI-to-ISA bridge - 82371AB PIIX4 from Intel: interface the ISA bus to the
Primary PCI bus.
3.2.2. Mobile Pentium
The cPCI-DMXS64GX system board supports the Intel's Low Power 500MHz and
700MHz Pentium III processor (Higher clock speeds will be available when Intel will
release the corresponding parts).
®
It consists of a Pentium
(on-die, full CPU speed, ECC capable) and a 64-bit high performance 100MHz front side
bus
The processor interfaces to the 440GX AGPset through the 64-bit low power GTL + data
bus interface.

3.2.3. North Bridge Chipset

This chipset consist of 443GX AGPset, 64/72-bit SDRAM data interface with ECC
support, Low Power GTL Bus, five PCI arbitration channels, PCI bus rev. 2.1, Accelerated
Graphics Port Interface (AGP). The bus is optimized for 100MHz operation.

3.2.4. 21154 PCI-to-PCI Bridge

The 21154 is configure as a 32/64-bit 33MHz PCI-to-PCI bridge that allows the board to
support up to 7 CPCI slot on its secondary PCI bus through a passive backplane. The
bridge is fully compliant with the PCI Local Bus Specification, Rev. 2.1. It provides full
support for delayed transactions, which enables the buffering of memory read, I/O and
configuration transactions. The 21154 have separate posted write, read data and delayed
transaction queues with a high buffering capability.
In addition, it supports buffering of simultaneous multiple posted writes and delayed
transactions in both directions.
®
II / III processor
III processor core with an integrated second level cache of 256KB
3.9
Installing the Board