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31 lines
1.2 KiB
Markdown
31 lines
1.2 KiB
Markdown
---
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title: Field Replaceable Unit Service Interface Specification
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aliases:
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- "/wp-content/uploads/resources/OpenFSI-spec/content/ch03.html"
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group: hardwarearchitecture
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publicreview: false
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aliases:
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- "openfsi/"
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- "openfieldserviceinterface/"
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- "fieldserviceinterface/"
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tags:
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- specification
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- fsi
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- fru
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- openfsi
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- hardware
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date: 2016-10-13
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draft: false
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---
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This document describes a Field Replaceable Unit (FRU) Support Interface (FSI) suited
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to service all chips in a computer system via a common serial interface.
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Key features are ease of use, easy scalability, robustness, and support for virtualization and
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the tunneling of interrupts and DMA control signals across the interface.
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FSI is superior to similar industry standard interfaces in these and many other features including speed, distance, data protection, and address range.
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FSI is a point to point two wire interface operating in half duplex mode,
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which is capable of supporting distances of up to 4 meters at up to 166 MHz bus frequency.
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All operations are fully CRC checked to allow error recovery.
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With its versatile architecture, the FSI is suited for a wide range of applications from service access to in-system test.
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