Design a DDR4-with-FPGA Interface
from Component Selection to Routed Board
A hands-on hardware-design course covering the full DDR4 memory-interface lifecycle: choosing DDR3/DDR4/DDR5/LPDDR and reading real datasheets, understanding every timing parameter that matters, picking a topology, mapping signal groups, mastering the signal-integrity/termination/decoupling trio, and routing the board — with animated diagrams, interactive Plotly charts, and worked examples throughout.
Course Modules
Work through in order — component selection through routing — or jump straight to the module you need today.
Introduction & DDR Landscape
DDR3/DDR4/DDR5/LPDDR4-5 at a glance, and hard vs. soft FPGA memory controllers.
Component Selection & Datasheets
A decision matrix, and how to actually read a DRAM and FPGA memory-interface datasheet.
Key Electrical & Timing Parameters
tCK, CL, tRCD, tRP, tRAS, tRFC, ODT, VREF — the JEDEC glossary, demystified.
Memory Topologies
Fly-by vs. T-branch vs. point-to-point, and why DDR4 mandates fly-by.
Signal Groups & Roles
CK/CA/Control/DQ/DQS/DM/VREF/ZQ, and byte-lane grouping.
Signal Integrity for DDR
Impedance targets, reflections, crosstalk, and simultaneous switching noise.
Termination Strategies
ODT vs. discrete VTT termination, and why LPDDR needs almost none.
Decoupling & PDN
VDD/VDDQ/VPP/VREF decoupling strategy and the power-delivery-network concept.
Layout & Routing Guidelines
Length matching, fly-by routing, layer stack-up, and BGA breakout.
FPGA-Specific Considerations
I/O bank rules, pin swapping, and what read/write leveling needs from your layout.
Checklist, Common Mistakes & Bring-Up
A consolidated pre-layout checklist, failure signatures, and scope-probing tips.
Capstone Bridge & Mini-Project
Hand off your design to the SI Academy's DDR4 verification capstone.
Worked Example: Versal SoC + Dual x16 DDR4
A real AMD Versal SoC (XCVC1902) paired with two real Micron x16 DDR4 devices (MT40A512M16) for a 32-bit interface — every value traced to a specific datasheet parameter.