Advancing from PCI Express Gen 2 to Gen 3 can bring significant challenges to system designs related to physical interconnect. The increase in date rate from 5.0Gbps to 8.0Gbps creates additional inter-symbol interference as the result of increased insertion loss.

Additionally, increased edge rates reduce isolation between channels thereby increasing crosstalk.

Amplif-EYE™ technology from MINDSPEED provides robust signal path solutions for PCIe Gen 2 and 3 in Three Different Product Types. MINDSPEED’s high-bandwidth Passive Switches enable switching of 8.0Gbps data while preserving signal fidelity. Redriving Signal

Conditioners are equipped with both receive and transmit equalization that minimize deterministic jitter caused by insertion loss.

Retiming Signal Conditioners include clock data recovery circuits (CDR) along with Rx and Tx equalization. The CDR is used to reduce jitter that cannot be managed with an equalizer such as that caused by impedance mismatches, stubs, and crosstalk. MINDSPEED devices included PCIe specific features such as electrical idle transparency (EI) and Rx detectable receiver termination. All devices are backward compatible with lower PCIe data rates and provided in small RoHS packages.

PASSIVE SWITCH - Switching PCI Express lanes:

MINDSPEED passive switches are designed to provide high bandwidth switch paths with minimal power and PCB space expenditure. M20000 pro vides up to 6GHz of bandwidth, through a pair differential passive switches that are offered in 3mm x 3mm QFN package.

REDRIVING SIGNAL CONDITIONER - Managing signal integrity over longer channels:

Insertion loss increases with higher frequencies and longer channel lengths. Channels of 15” or more are typical in blade servers and high-end RAID systems. MINDSPEED redriving signal conditioners provide transmit and receive equalization at frequencies up to 4.0GHz (for 8.0Gbps signaling) to generate a flat channel response by providing additional boost at high frequencies. MINDSPEED is the market leader in adaptive equalizers that self-optimize without the need for user programming.

RETIMING SIGNAL CONDITIONER - Managing signal integrity over the most challenging channels:

Systems with higher densities, multiple hops, varying materials from PCB to PCB, and multiple vias present further signal integrity challenges in addition to insertion loss. These systems will experience increase jitter due to crosstalk and reflection.

This type of jitter is non-deterministic and therefore cannot be managed with equalizers alone. MINDSPEED retiming signal conditioners incorporate a clock data recovery (CDR) circuit that can be used to address non-equalizable jitter. The CDR retimes data effectively resetting the jitter budget.

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