91³Ô¹ÏÍø

Interposer Extraction from 3DIC Compiler & SIPI Analysis 

Interposer extraction is a unique challenge on its own and is quite different than traditional extraction of RC parasitics or traces of PCB. Running RC and Electromagnetic Extraction often requires tedious conversions of design databases, often going through export to and import from GDS format. With tight integration with extraction tools, 3DIC Compiler offers convenient flow for setting up RC  & electromagnetic extraction from 3DIC Compiler GUI and drive the extraction on the desired sections. This makes it easy to run extraction tools for everyone and shortens design cycles. With capabilities to call analysis tools and to use testbenches, 3DIC Compiler offers very convenient platform for layout to extraction and SIPI analysis. 

Amir Asif, Sr. Staff Application Engineer, 91³Ô¹ÏÍø

TDECQ Measurement for High Speed PAM4 Data Links

In data center optics, 4-level Pulse Amplitude Modulation (PAM-4) signaling is gradually overtaking Non-Return to Zero (NRZ) signaling. Measuring BER/SER in these high-speed systems can be very time consuming and may need extensive setup. TDECQ based on IEEE 802.3bs is intended as a ¡°quick compliance check¡± based on the eye diagram to see if a PAM4 transmitter fulfills very specific requirements described by the standard. In this paper, we demonstrate TDECQ measurement capability in OptSim/OptoCompiler to analyze the impacts of inter-modal Dispersion and laser linewidth in High-Speed PAM4 data link.

Wosen Eshetu , Senior 91³Ô¹ÏÍø Engineer, 91³Ô¹ÏÍø

Daniel Nenni, SemiWiki.com

In this talk, Youngsoo will present LPDDR5 statistical channel simulation methodology based on STATEYE analysis. Youngsoo investigated simulation parameters provided by STATEYE and optimized the parameters so that it has a good trend matching with measurement results at both 6.4 and 8.5Gbps for write operation. In addition, Youngsoo compared SPICE simulators (PrimeSim HSPICE vs. SPICE) to enhance simulation runtime. Finally, based on the STATEYE simulation, we will show some package feasibility study results for our future products.

This year's presentation builds on our prior exploration of signal integrity challenges in high-speed digital interconnects, focusing on the latest methodologies for enhancing IBIS-AMI modeling and channel verification. As we venture into realms of higher frequencies and more complex modulation, we introduce an advanced integration of MATLAB and HSPICE simulations that refine equalization, analog I/O, and lossy channel characterizations under severe crosstalk conditions. We will discuss new strategies to address the intricacies of SerDes and parallel link designs, ensuring robust performance in the face of escalating data rates and the rigorous demands of next-generation communication systems. Attendees will gain a deeper understanding of state-of-the-art verification techniques vital for thriving in the ultra-high-speed era.

This presentation showcases a simulation approach for Signal and Power Integrity Optimization, with a primary emphasis on enhancing the Power Delivery Network (PDN) to meet stringent noise specifications and signal channel optimization to minimize losses and crosstalk. Hisham will highlight critical challenges such as determining the target impedance of the PDN and mitigating the impact of Power Supply Induced Jitter (PSIJ) on overall system performance. The proposed simulation approach will capture the worst-case behavior, optimize the design and minimize the simulation effort required to successfully sign-off an HBM3 interface. 

IBIS and Touchstone are extremely familiar formats to the signal and power integrity communities.? But badly-behaved models are unfortunately very common. ?In this brief talk, Michael will review a few little-known techniques already available to the HSPICE SIG audience to help ensure model quality, in generating and in using both formats.? In addition, Michael will provide some insights into how the HSPICE SIG audience can get a head-start in creating and using the next generation of Touchstone and IBIS model formats with tools and methods they already have at their fingertips.??

Q&A Session with all speakers moderated by Daniel Nenni