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PCI/104-Express

From Wikipedia, the free encyclopedia

The PCI/104-Express™ specification establishes a standard to use the high-speed PCI Express bus in embedded applications.[1] It was developed by the PC/104 Consortium and adopted by member vote in March 2008. PCI Express was chosen because of its market adoption, performance, scalability, and growing silicon availability worldwide. It provides a new high-performance physical interface while retaining software compatibility with the existing PCI infrastructure.

Incorporating the PCI Express bus within the industry proven PC/104 architecture brings many advantages for embedded applications including fast data transfer, low cost due to PC/104’s unique self-stacking bus, high reliability due to PC/104’s inherent ruggedness, and long-term sustainability.

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Transcription

Specification Overview

There are two versions of the specification that are complementary. The main difference is that Type 2 replaces the PCI Express x16 link with SATA, USB 3.0, LPC, and RTC battery.

Both Type 1 and Type 2 have this common feature set and pin assignments:

  • Four x1 PCI Express Links
  • Two USB 2.0
  • ATX power and control signals: +5V Standby, Power supply on, Power OK
  • Power: +3.3V, +5V, +12V
  • SMBus

Type 1 has the common feature set plus:

  • One x16 PCI Express Link, or optionally two x8 Links, two x4 PCI Express Links, or two SDVO

Type 2 has the common feature set plus:

  • Two x4 PCI Express Links
  • Two USB 3.0
  • Two SATA
  • LPC Bus
  • RTC Battery

See also

References

  1. ^ Media, OpenSystems. "PC/104 Consortium technical update: Stackable PCs from ISA to PCI to PCI Express". Embedded Computing Design.

External links

This page was last edited on 25 February 2024, at 21:34
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