User`s guide

Insyde -Confidential- Page

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CAS Latency: Allows the configuration Column Address Select latency. The options are Auto, 1.5CLK,

2CLK, 2.5CLK, 3CLK, and 3.5CLK

Refresh rate: Allows the setting of the memory refresh rate. Options include: Auto, 15us, 3us, 7us, 31us,

62us and 125us

Interleave selection: Allows the setting of the interleaving to either LOI (Low Order Interleaving) or HOI

(High Order Interleaving)

XOR BA0, BA1, or MB0: Allows the enable or disable of the XORing of module bank BA1or BA0 with

upper GLIU address bit. Options are Enabled and Disabled.

XOR Bit Select: Allows the XOR bit to be selected. Options are 18, 19, 20, and 21.

Memory Latencies: Allows the manual or auto configuration of the memory latencies

ACT2PRE: ACT to PRE Period (tRAS). Minimum number of clocks from the ACT to PRE

commands on the same component bank

PRE2ACT: Pre to ACT period (tRP). Minimum number of SDROM clocks between PRE and

ACT commands

ACT2CMD: Delay time from ACT to Read/Write (tRCD). Minimum number of SDRAM clocks

between ACT and Read/Write Commands

ACT2ACT: ACT(0) to ACT(1) Period (tRRD). Minimum number of SDRAM clocks between

ACT and ACT commands to two different component banks within the same module bank.

ACT2ACTREF: tRC = tRP + tRAS. May be set from 0 to 15.

REF2ACT: Refresh to Activity Delay (tRFC). Minimum number of SDCLKS 90-31) between

refresh and next command, usually an activate

E. System Clock/PLL Configuration

The system clock/PLL allows the setting of the clocks for the AMD Geode

system.

Clock Mode: Allows the clock speed to either be determined by the hardware strapping or manual settings. If the

H/W strapping option is selected, then the manual divisor settings will be grayed out.

Manual PLL Settings

CPU Multiplier: Options from 1 to 33