Biostar IDEQ 220K BIOS MANUAL - Page 20

DRAM CONFIGURATION, Max Memclock MHz, CAS# Latency, Min RAS# active time tRAS

Page 20 highlights

K8VBK-S7 BIOS Setup 4.2 DRAM CONFIGURATION 4.2.1 4.2.2 Max Memclock (MHz) Places an artifical memory clock limit on the system. Memory is prevented from running faster than this frequency. The Choices: 200 (Default), 166, 133, and 100. CAS# Latency This field specify the cas# latency, i.e. cas# to read data valid. The Choices: CL=2.5 (Default), CL=3.0, CL=2.0 4.2.3 RAS# to CAS# Delay (tRCD) This field specifies the RAS# to CAS# Delay to read/ write command to the same bank. Typically -20 Nsec. The Choices: 3 BUS CLOCKS (Default), 2 BUS CLOCKS, 4 BUS CLOCKS, 5 BUS CLOCKS, 6 BUS CLOCKS, 7 BUS CLOCKS 4.2.4 Min RAS# active time (tRAS) This field specifies the minimum RAS# active time. Typically -45-60 Nsec. The Choices: 6 BUS CLOCKS (Default), 13 BUS CLOCKS, 14 BUS CLOCKS, 15 BUS CLOCKS. 4.2.5 Row Precharge Time (tRP) This field specifies the Row precharge Time. Precharge to Active or Auto-Refresh of the same bank. Typically 20-24 Nsec. The Choices: 3 BUS CLOCKS (Default), 2 BUS CLOCKS, 4 BUS CLOCKS, 5 BUS CLOCKS, 6 BUS CLOCKS. 19

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42

K8VBK-S7 BIOS Setup
19
4.2
DRAM CONFIGURATION
4.2.1
Max Memclock (MHz)
Places an artifical memory clock limit on the system. Memory is
prevented from running faster than this frequency.
The Choices:
200
(Default), 166, 133, and 100.
4.2.2
CAS# Latency
This field specify the cas# latency, i.e. cas# to read data valid.
The Choices: CL=2.5
(Default), CL=3.0, CL=2.0
4.2.3
RAS# to CAS# Delay (tRCD)
This field specifies the RAS# to CAS# Delay to read/ write command
to the same bank. Typically -20 Nsec.
The Choices: 3 BUS CLOCKS
(Default), 2 BUS CLOCKS, 4 BUS
CLOCKS, 5 BUS CLOCKS, 6 BUS CLOCKS, 7 BUS CLOCKS
4.2.4
Min RAS# active time (tRAS)
This field specifies the minimum RAS# active time. Typically -45-60
Nsec.
The Choices: 6 BUS CLOCKS
(Default), 13 BUS CLOCKS, 14 BUS
CLOCKS, 15 BUS CLOCKS.
4.2.5
Row Precharge Time (tRP)
This field specifies the Row precharge Time. Precharge to Active or
Auto-Refresh of the same bank. Typically 20-24 Nsec.
The Choices:
3 BUS CLOCKS
(Default), 2 BUS CLOCKS, 4 BUS
CLOCKS, 5 BUS CLOCKS, 6 BUS CLOCKS.