IEI Integration WAFER-LX v1.0 User Manual
Page 87

WAFER-LX User Manual
Precharge dealy (tRAS) [12]
The Precharge Dealy option
allows you to set the time it takes for the RAS to start retrieving the
actual data after a request has been issued to the memory module.
(To be able to change this
configuration option the DRAM RAS# Precharge configuration option must be set to “Manual”)
The following configuration options are available,
1. Auto
2. 2
nanoseconds
3. 3
nanoseconds
4. 4
nanoseconds
5. 5
nanoseconds
6. 6
nanoseconds
7. 7
nanoseconds
8. 8
nanoseconds
9. 9
nanoseconds
10. 10
nanoseconds
11. 11
nanoseconds
12.
12 nanoseconds (D
EFAULT
)
13. 13
nanoseconds
14. 14
nanoseconds
15. 15
nanoseconds
System Memory Frequency
The System Memory Frequency configuration option allows you to manually select the speed of
the installed memory module. The default value is 533MHz. If you are not certain of what value to
select, select “Auto” and the BIOS will automatically detect the speed. (To be able to change this
configuration option the DRAM RAS# Precharge configuration option must be set to “Manual”)
The following configuration options are available,
1. Auto
2. 333MHz
3. 400MHz
4. 533MHz
(D
EFAULT
)
SLP_S4# Assertion Width [4 to 5 sec]
The following configuration options are available,
4-22
IEI
®
Technology, Corp.
4-22