Foxconn H77M-S User manual - Page 36

► Row Active to Row ActivetRRDmin, ► Read CAS# Precharge Delay tRTP

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3 North Bridge Configuration Aptio Setup Utility - C opyright (C) 2011 American Megatrends, Inc. F-Center Memory Multiplier Configuration Performance Memory Profiles [Manual] XMP Profile 1 Not Supported XMP Profile 2 Not Supported The selection of Performance Memory Profiles which impacts memory sizing behavior. Memory Timing Configuration Memory Clock Multiplier [1.33] Memory Multiplire 13.33] tCL 9 tRP 9 tRCD 9 tRAS 24 tWR 10 tRFC 74 tWTR 5 tRRD 4 tRTP 5 tFAW 20 Intel Graphics Configuration → ← : Select Screen ↑ ↓ : Select Item Enter: Select +/-: Change Opt. F1: General Help F2: Previous Values F3: Optimized Defaults F4: Save & Reset ESC: Exit Graphics Core Ratio Limit 10 Version 2.14.1219. Copyright (C) 2011 American Megatrends, Inc. ► CAS Latency (tCL) The number of memory clocks it takes a DRAM to return data after the read CAS_L is assert ed 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 (tRPmin) This item allows you to select the row precharge time (in clock cycles). ► CAS to RAS(tRCDmin) This item allows you to select a delay time (in clock cycles) between the CAS# and RAS# strobe signals. ► Active to Precharge(tRASmin) This item allows you to set the minimum RAS# active time (in clock cycles). ► Write Recovery(tWRmin) This item allows you to select the write recovery time (in clock cycles). ► Refresh Recovery(tRFCmin) Refresh to Refresh or Refresh to Active command interval. ► Internal Write to Read Command(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. ► Row Active to Row Active(tRRDmin) This item allows you to select a delay time (in clock cycles) between the RAS# and RAS# strobe signals. ► Read CAS# Precharge Delay (tRTP) Internal READ Command to PRECHARGE Command delay 29

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3
29
North Bridge Configuration
Version 2.14.1219. Copyright (C) 2011 American Megatrends, Inc.
Aptio Setup Utility-Copyright (C) 2011 American Megatrends, Inc.
Memory Multiplier Configuration
Performance Memory Profiles
[Manual]
XMP Profile 1
Not Supported
XMP Profile 2
Not Supported
Memory Timing Configuration
Memory Clock Multiplier
[1.33]
Memory Multiplire
[13.33]
tCL
9
tRP
9
tRCD
9
tRAS
24
tWR
10
tRFC
74
tWTR
5
tRRD
4
tRTP
5
tFAW
20
Intel Graphics Configuration
Graphics Core Ratio Limit
10
→←: Select Screen
↑↓: Select Item
Enter: Select
+/-: Change Opt.
F1: General Help
F2: Previous Values
F3: Optimized Defaults
F4: Save & Reset
ESC: Exit
The selection of Performance
Memory Profiles which impacts
memory sizing behavior.
F-Center
► CAS Latency (tCL)
The number of memory clocks it takes a DRAM to return data after the read CAS_L is assert
ed 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 (tRPmin)
This item allows you to select the row precharge time (in clock cycles).
► CAS to RAS(tRCDmin)
This item allows you to select a delay time (in clock cycles) between the CAS# and RAS#
strobe signals.
► Active to Precharge(tRASmin)
This item allows you to set the minimum RAS# active time (in clock cycles).
► Write Recovery(tWRmin)
This item allows you to select the write recovery time (in clock cycles).
► Refresh Recovery(tRFCmin)
Refresh to Refresh or Refresh to Active command interval.
► Internal Write to Read Command(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.
► Row Active to Row Active(tRRDmin)
This item allows you to select a delay time (in clock cycles) between the RAS# and RAS#
strobe signals.
► Read CAS# Precharge Delay (tRTP)
Internal READ Command to PRECHARGE Command delay