PCI (Peripheral Component Interconnect) Andrew P. Michelle S. Caleb D. Jon P.

Overview History History Why is it popular/why do we use it Why is it popular/why do we use it PCI PCI PCI-X PCI-X PCI-X 2.0 PCI-X 2.0 PCIe PCIe

HISTORY Designed by Intel Designed by Intel Adopted in mid 1990s by Macintosh and PCs Adopted in mid 1990s by Macintosh and PCs Immediately put into servers, replacing MCA and EISA Immediately put into servers, replacing MCA and EISA

Why is it popular/why do we use it? Better system performance for I/O Better system performance for I/O Few chips Few chips Supports other buses on the PCI bus Supports other buses on the PCI bus Supports 32 or 64 bit bus Supports 32 or 64 bit bus Supported by a large amount of processers and peripherals Supported by a large amount of processers and peripherals

Organization of the PCI Communicates through the PCI bus on the South Bridge. Communicates through the PCI bus on the South Bridge. 49 mandatory signal lines, and 51 optional signal lines. 49 mandatory signal lines, and 51 optional signal lines. Data is transferred between an initiator or master and a target. Data is transferred between an initiator or master and a target. There are many commands the master can give a target such as I/O Read, I/O Write, Memory Read, Memory Read Line, Memory Write, and Configuration Read. There are many commands the master can give a target such as I/O Read, I/O Write, Memory Read, Memory Read Line, Memory Write, and Configuration Read.

PCI Normal PCs Normal PCs Peak transfer rate of 133 MB/s Peak transfer rate of 133 MB/s Normally 32 bit bus width Normally 32 bit bus width Could have 64 bit bus width Could have 64 bit bus width Full SIZE= Height of 107 mm (4.2 inches) and a depth of 312 mm ( inches) Full SIZE= Height of 107 mm (4.2 inches) and a depth of 312 mm ( inches)

PCI-X Used in servers Used in servers Backward compatible with PCI Backward compatible with PCI Has been replaced by PCIe Has been replaced by PCIe Frequency up to 133 MHz Frequency up to 133 MHz Uses parallel technology Uses parallel technology

PCI-X 2.0 Adds 266-MHz AND 533MHz Adds 266-MHz AND 533MHz Yielding roughly 2.15 GB/s and 4.3 GB/s Yielding roughly 2.15 GB/s and 4.3 GB/s Being replaced by PCIe Being replaced by PCIe Adds error correcting codes Adds error correcting codes Uses parallel technology Uses parallel technology

PCIe PCIe was created in 2004 PCIe was created in 2004 Uses serial technology instead of parallel Uses serial technology instead of parallel Use different connectors  Use different connectors  Much faster than PCI Much faster than PCI

Speeds/Connector Types

SOURCES Check this out… Check this out… _History.pdf _History.pdf _History.pdf _History.pdf