User Manual

3-26
Chapter 3: BIOS Setup
DRAM Maximum Activate Count [Auto]
Override DIMM SPD Byte 7 [3:0]. Maximum Activate Count (MAC).
When set to [Auto] it will be based on SPD setting.
Configuration options: [Untested MAC] [700 K] [600 K] [500 K] [400 K]
[300 K] [200 K] [Unlimited MAC] [Auto]
DRAM Refresh Rate [7.8 usec]
Configuration options: [7.8 usec] [3.9 usec]
Self-Refresh Exit Staggering [Disabled]
Tcksrx += (Trfc/n * (UMC_Number % 4)), here n = 3 or 4.
Configuration options: [Disabled] [Trfc / 3] [Trfc / 4]
Does not apply the extra addition if set to [Disabled].
Cmd2T
Select between 1T and 2T mode on ADDR/CMD.
Configuration options: [Auto] [1T] [2T]
Gear Down Mode
Configuration options: [Auto] [Disabled] [Enabled]
CAD Bus Configuration
CAD Bus Timing User Controls [Auto]
Allows you to set the CAD bus signals to Auto or Manual.
Configuration options: [Auto] [Manual]
The following items appear only when CAD Bus Timing User Controls is set to [Manual].
AddrCmdSetup [0]
Allows you to setup time on CAD bus signals.
Configuration options: [0] - [39]
CsOdtSetup [0]
Allows you to setup time on CAD bus signals.
Configuration options: [0] - [39]
CkeSetup [0]
Allows you to setup time on CAD bus signals.
Configuration options: [0] - [39]
CAD Bus Drive Strength User Controls [Auto]
Allows you to set the CAD bus signals to Auto or Manual.
Configuration options: [Auto] [Manual]
The following items appear only when CAD Bus Drive Strength User Controls is set to
[Manual].
ClkDrvStren [Auto]
Configuration options: [Auto] [120.0 Ohm] [60.0 Ohm] [40.0 Ohm] [30.0
Ohm] [24.0 Ohm] [20.0 Ohm]
AddrCmdDrvStren [Auto]
Configuration options: [Auto] [120.0 Ohm] [60.0 Ohm] [40.0 Ohm] [30.0
Ohm] [24.0 Ohm] [20.0 Ohm]