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Configuring the BIOS
51
¾ Expert
Use the
Page Up and Page Down keys to select Expert. When
Expert is selected, all timing categories are enabled for manual
input. Note that you should set the value to Optimal to use
the manufacturers’ recommended values.
ª tCL: CAS# latency (options are 1 through 6).
ª tRDC: RAS#-to-CAS# Delay for Read/Write commands to
the same bank (options are 1 through 7).
ª tRP: Row Precharge time. This is the Precharge-to-Active
or Auto-to-Refresh of the same bank (options are 1 through
7).
ª tRAS: This is the minimum RAS# active time (options are
1 through 31).
ª Command Per Clock: This is the command timing setting
on a per clock unit basis (options are 1T and 2T).
ª tRRD: RAS#-to-RAS# delay of different banks (options are 1
through 15).
ª tRC: RAS#-to-RAS# or auto refresh time of the same bank
(options are 1 through 31).
ª tWR: The Write recovery time (options are 2 through 7).
ª tWTR: This is the minimum write-to-read delay with the
same chip selected (options are 1 through 10).
Parameters Settings Current Value
Memory Timing Setting [Expert]
tCL (CAS Latency) [Auto(5)] 5
tRDC [Auto(7)] 5
tRP [Auto(7)] 5
tRAS [Auto(23)] 18
Command Per Clock (CDM) [Auto(2T)] 1T
** Advanced Memory Settings **
tRRD [Auto(4)] 3
tRC [Auto(28)] 22
tWR [Auto(7)] 5
tWTR [Auto(10)] 9
tREF [Auto] 6.1uS