Foxconn H61MXL User manual - Page 35

North Bridge Configuration Aptio Setup Utility - C opyright (C) 2011 American Megatrends, Inc. F-Center Memory Multiplier Configuration Enhanced Intel SpeedStep Technology Memory Multiplier 13.33] Memory Timing Configuration CAS# Latency(tCL 9 Row Precharge Time(tRP 9 RAS# to CAS# Delay(tRCD 9 RAS# Active Time(tRAS 24 Write Recovery Time(tWR 10 Row Refresh Cycle Time(tRFC) 74 Write to Read Delay(tWTR 5 Active to Active Delay(tRRD) 4 Read CAS# Precharege(tRTP) 5 Four Active Window Delay(tFAW) 20 → ← : Select Screen ↑ ↓ : Select Item Enter: Select +/-: Change Opt. F1: General Help F2: Previous Values F3: Optimized Defaults F4: Save & Exit ESC: Exit 3 Version 2.11.1210. Copyright (C) 2011 American Megatrends, Inc. ► Memory Multiplier This item is used to adjust the memory Clock Ratio. The available settimgs are: [10.67], [13.33], [16], [18.67], [21.33]. ► CAS# Latency (tCL) The number of memory clocks it takes a DRAM to return data after the read CAS_L is asserted depends on the memory clock frequency. The value that BIOS programs into the memory controller is a function of the target clock frequency. The target clock frequency is determined from the supported CAS latencies at given clock frequencies of each DIMM. ► Row Precharge Time (tRP) This item allows you to select the row precharge time (in clock cycles). ► RAS# to CAS# Delay (tRCD) This item allows you to select a delay time (in clock cycles) between the CAS# and RAS# strobe signals. ► RAS# Active Time (tRAS) This item allows you to set the minimum RAS# active time (in clock cycles). ► Write Recovery Time (tWR) This item allows you to select the write recovery time (in clock cycles). ► Row Refresh Cycle Time (tRFC) Refresh to Refresh or Refresh to Active command interval. ► Write to Read Delay (tWTR) This item allows you to select a delay time (in clock cycles) between sending the last data from a write operation to the memory and issuing a read command. ► Active-to-Active Delay (tRRD) This item allows you to select a delay time (in clock cycles) between the RAS# and RAS# strobe signals. 28