System Memory Timing Support

The IMC supports the following DDR Speed Bin, CAS Write Latency (CWL), and command signal mode timings on the main memory interface:

• tCL = CAS Latency
• tRCD = Activate Command to READ or WRITE Command delay
• tRP = PRECHARGE Command Period
• tRPb = per-bank PRECHARGE time
• tRPab = all-bank PRECHARGE time
• CWL = CAS Write Latency
• Command Signal modes:
  • 2N indicates a new DDR4 command may be issued every 2 clocks.
  • 1N indicates a new DDR4/LPDDR4x command may be issued every clock.