|Category||Interface and Interconnect => PCI|
|Description||2.5 Gbps / 5.0 Gbps 4 Lane PCI Express Transceiver With Equalization And De-Emphasis
The DS50PCI401 is a low power, 4 lane bidirectional buffer/equalizer designed specifically for PCI Express Gen1 and Gen2 applications. The device performs both receive equalization and transmit de-emphasis, allowing maximum flexibility of physical placement within a system. The receiver is capable of opening an input eye that is completely closed due to inter-symbol interference (ISI) induced by the interconnect medium.
The transmitter de-emphasis level can be set by the user depending on the distance from the DS50PCI401 to the PCI Express endpoint. The DS50PCI401 contains PCI Express specific functions such as Transmit Idle, RX Detection, and Beacon signal pass through.
|Company||National Semiconductor Corporation|
|Datasheet||Download DS50PCI401 datasheet
|Cross ref.||Similar parts: 89HP0508P, DS50PCI402SQ/NOPB, DS50PCI402SQE/NOPB|
|DS50PCI401 2.5 Gbps / 5.0 Gbps 4 Lane PCI Express Transceiver with Equalization and De-Emphasis
The is a low power, 4 lane bidirectional buffer/ equalizer designed specifically for PCI Express Gen1 and Gen2 applications. The device performs both receive equalization and transmit de-emphasis, allowing maximum flexibility of physical placement within a system. The receiver is capable of opening an input eye that is completely closed due to inter-symbol interference (ISI) induced by the interconnect medium. The transmitter de-emphasis level can be set by the user depending on the distance from the DS50PCI401 to the PCI Express endpoint. The DS50PCI401 contains PCI Express specific functions such as Transmit Idle, RX Detection, and Beacon signal pass through. The device will change the load impedance on its input pins based on the state of RXDETA/B inputs detection. An internal rate detection circuit is included to detect if an incoming data stream at Gen2 data rates, and adjusts the de-emphasis on it's output accordingly. The signal conditioning provided by the device allows systems to upgrade from Gen1 data rates to Gen2 without reducing their physical reach. This is true for FR4 applications such as backplanes, as well as cable interconnect.Features
Input and Output signal conditioning increases PCIe reach
UI of residual deterministic jitter at 5Gbps after UI of residual deterministic jitter at 5Gbps after 7m ofPCIe Cable (with Input EQ) FR4 (with Output DE)
UI of residual deterministic jitter at 5Gbps with UI of residual deterministic jitter at 5Gbps with 7m ofAdjustable Transmit VOD to 1200mVp-p Automatic power management on an individual lane basis
Adjustable electrical idle detect threshold. Data rate optimized 3-stage equalization 26 dB gain Data rate optimized 12 dB transmit deemphasis package
Flow-thru pinout 10mmx5.5mm 54-pin leadless LLP Single supply operation 2.5V >6kV HBM ESD rating to 85°C operating temperature range
NSID DS50PCI401SQ DS50PCI401SQE Qty Tape & Reel Supplied As 2,000 Units Tape & Reel Supplied As 250 Units Spec NOPB Package SQA54A
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