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Published bySofia Rowe Modified about 1 year ago

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Optimizing FPGA Receiver Links Using Introspect ESP © Introspect Technology, 2013

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Introduction to Introspect ESP Introspect ESP Software Host PC Real-time signal integrity analyzer for FPGA systems Rapid SerDes link bring-up and optimization Gbps Transceiver FPGA Introspect ESP Engine Introspect ESP Engine User Mission-Logic User Mission-Logic Gbps Transceiver Hard -IP © Introspect Technology, 20131

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Simple UI for Signal-Integrity Engineers Quick-reference help for selected property Single command performs measurement and analysis on all activated lanes in parallel Enter any sequence of operations in this tab using a highly intuitive language Each defined component has a set of properties that can be manipulated in this tab © Introspect Technology, 20132

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Shmoo Optimization Component Single Command Minimization Parameter is Total Jitter (TJ) Optimize over Rx Linear EQ & Rx DC Gain © Introspect Technology, 20133

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Result Visualization Near Optimal Band Rx Linear EQ Rx DC Gain Sub-Optimal Regions © Introspect Technology, 20134

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Channel-to-Channel Variation Near Optimal Band Near Optimal Band Optimal region for channel 4 is clearly shifted to the right compared to channel 2 © Introspect Technology, 20135

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Numerical Analysis & Independent Variable Analysis … and find out best linear EQ for this gain Hold DC gain constant… © Introspect Technology, 20136

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Performance After Optimization Same Scale BeforeAfter © Introspect Technology, 20137

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Summary IESP allows for extremely efficient optimization of parallel receiver links Graphical visualization of optimization results allows for what-if analysis and debug Numerical analysis & return values allow for the creation of complex optimization criteria and automation © Introspect Technology, 20138

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