Figure 2-9: pci-to-isa bridge – IEI Integration IEM-9452 User Manual

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IEM-9452 ETX Module

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Figure 2-9: PCI-to-ISA Bridge

The 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

Supports NOGO function

Single 33 MHz Clock Input

+3.3V PCI I/F with +5V tolerant I/O buffers

+5V ISA I/F and core Power Supply

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