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Bridge chip targets space-constrained apps

Posted: 13 Jun 2006 ?? ?Print Version ?Bookmark and Share

Keywords:NEC? Electronics? America? PCI Exprses? single-port?

NEC Electronics America Inc. announced it has expanded its portfolio of PCI Express semiconductor solutions to include a low-power, single-port PCI Express-to-PCI/PCI-X bridge chip. The company said that with a small form factor of 17mm2, the low-power PD720405 bridge device is suitable for networking and storage applications with stringent space limitations, such as workstation and server motherboards and low-profile cards (LPCs).

"The demand for high-speed advanced interconnect technologies such as PCI Express continues to increase, and form factor is a key consideration. This is particularly true for designers working with enterprise, storage and networking applications that have very specific size limitations in addition to requirements for high speed and reliability," said Kugao Ouchi, general manager for digital consumer and connectivity strategic business unit, NEC Electronics America.

The PD720405 ASSP supports x4 PCI Express lanes and a single PCI/PCI-X domain, and operates at 133MHz in single-data-rate PCI-X mode or 66MHz in 64bit PCI mode. The ASSP also supports standard PCI Express power management states, as well as optional advanced PCI Express power management states, such as Link (from L0, L0s, L1, L2/L3 Ready and L3) and Device (D0, D1, D2, and D3hot and D3cold). This support allows designers to minimize power consumption while complying with PCI specifications.

The new ASSP features a dual power supply that eliminates the need for special power-up sequencing, NEC said. It also supports advanced error reporting and has a very low power consumption level of 2W, which eliminates the need for heat sinks in most applications, the company explained.

NEC Electronics' PD720405 ASSP is available in a 17-by-17mm BGA package that enables the device to fit into LPCs with heights as low as 64.41mm, compared to the 106.88mm height in standard PCI form factors, said the company.




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