What’s new in PollEx 2021
JungSup Kim_22376
New Altair Community Member
Let’s have a look at the key features of PollEx 2021!
Adding a feature to export layer images
- PollEx PCB supports to export images of Artwork layers and Physical layers. Supported formats are *.JPG and *.BMP The feature can be used from the menu File – Export To – Image in PollEx PCB.
Figure 1 – Export to image from PollEx PCB Modeler: PCB
Adding a feature to support LPDDR4 analysis
- A function to analyze LPDDR4 added to the Automatic DDR Bus Analysis feature in PollEx SI. LPDDR4 timing standard table was added.
Figure 2 – LPDDR4 Timing Table
- In the existing DDR technology, the Vref voltage, which is the measurement reference for timing data and address buses, was used as a fixed value, but the Vref voltage in LPDDR4 is generated inside the IC through the training process. If the Extract Vref_DQ using analysis result option is used, the Vref value is searched in the manner specified by JEDEC. As a result of analysis for all data/address buses of ICs, the voltage level at which the eye is the widest open is obtained, and the Vref value is determined by their middle values. If the Use user defined value option is used, user can set the required Vref value.
Figure 3 – LPDDR4 Vref setting method for Data(Vref_DQ) and Address(Vref_CA) bus
Replacing SI to HyperSpice Engine
- The Spice engine of PollEx SI has been changed to HyperSPICE from Polliwog Spice since only the Spice engine was changed internally with same user GUI. However, the default Spice Control Parameter is changed.
Figure 4 – Default Spice Control Parameter for HyperSPICE
Adding a feature of impedance map
- A function to display the Impedance Map in the result of the Impedance check item of PollEx DFE+ was added. After performing the Impedance check upon clicking the Impedance Map button in the result table, the Impedance Map dialog is displayed. By using this menu, user can easily find the impedance mismatch area in the full path of the entire BUS.
Figure 5 – Impedance Map for Single-Ended Signal Dialog
Adding a feature of crosstalk coupling table mapping
- A function to display the Backward Crosstalk Coefficient(kb) Coupling Map in the result of the Crosstalk Noise check item of PollEx DFE+ was added. After performing the Crosstalk Noise check upon clicking the Coupling Map button in the result table, the Coupling Map dialog is displayed. By using this menu, user can easily find the areas where crosstalk is vulnerable in the full path of the entire BUS.
Figure 6 – Backward Crosstalk Coefficient Map Dialog
View the Release Notes and download PollEx 2021 from Altair One.
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