User`s manual

CZGA LX-50 CyberResearch
®
CPU Cards
30 ©Copyright 2009 CyberResearch, Inc.
2.7.4 ITE IT8888G PCI-to-ISA Bridge
The AMD CS5536 Southbridge is interfaced to an ITE IT8888G PCI-to-ISA bridge through
the PCI bus. The ITE IT8888G PCI-to-ISA bridge is then connected to an ISA edge
connector on the bottom of the CZGA LX-50 thereby enabling legacy ISA card expansion
on the backplane. The PCI to ISA bridge is shown in Figure 2-15.
Figure 2-15: PCI-to-ISA Bridge
The ITE IT8888G has a PCI specification v2.1 compliant 32-bit PCI bus interface and
supports both PCI Bus master and slave. The PCI interface supports both programmable
positive and full subtractive decoding schemes. Some of the features of the IT8888G PCI
to ISA bridge are listed below.
 PCI Interface
 Programmable PCI Address Decoders
 PC/PCI DMA Controller
 Distributed DMA Controller
 ISA Interface
 SM Bus
 1 analog line-level mono output: MONO_OUT
 Power-on Serial Bus Configuration
 Serial IRQ
 Versatile power-on strapping options