• Introduction
    • DDR Module Comparison
    • Trion FPGAs with DDR DRAM
  • General Guidelines
  • Routing DDR Signals
  • Re-Ordering DQS, DQ, and DM Signals
    • Re-Ordering for LPDDR3 and LPDDR2
    • Re-Ordering for DDR3
  • Terminating Signals
    • DDR Clock Termination
    • DQ, DQS, DM Termination
    • DDR Address and Control Termination
  • Laying Out Traces
    • Maximum Trace Length
    • Trace Spacing
    • Bending Traces
    • Differential Pair Symmetry
    • Match Trace Lengths
    • Split Planes and Reference Planes
    • Fly-By Layout For Multiple DRAM Modules
  • Controlling Skew
    • Microstrip and Stripline Skew
    • Differential Pair Skew
  • Controlling Impedance
  • Revision History

Terminating Signals

  • DDR Clock Termination
  • DQ, DQS, DM Termination
  • DDR Address and Control Termination