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EPI - rugged PCI/ISA Bus for Industrial PCs
By Pang Guanshi, Chen Bo, EVOC Group
The rugged industrial-grade EPI bus is much more suitable for industrial PC applications than the PICMG PCI/ISA bus in terms of cost-performance, physical compatibility, software and hardware compatibility, signal integrity, EMC, environment adaptability, reliability and flexibility.
Industrial PC (IPC for short) is the core part of industrial automation device and IT infrastructure. Since its establishment in 1994, PICMG has set a series of bus standards, including PCI/ISA, PCI-Only, SHB Express, CompactPCI, MicroTCA, AdvancedTCA, and COM Express, laying a solid groundwork for the development of industrial PC. These bus standards have always been leading the development trend of IPC industry. The reasons behind PICMG 1.0 PCI/ISA bus’s huge success are universality and low cost. However, PICMG 1.0 PCI/ISA later turned out not to be suitable for IPCs, not only because of the fast development of PC technology, but also due to the inherent defects of PICMG 1.0 PCI/ISA bus...
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