參數(shù)資料
型號: RG82845MZ
英文描述: Controller Miscellaneous - Datasheet Reference
中文描述: 控制器雜項-數(shù)據(jù)表參考
文件頁數(shù): 115/157頁
文件大?。?/td> 1407K
代理商: RG82845MZ
Intel
82845MP/82845MZ Chipset-Mobile (MCH-M)
60
Datasheet
250687-002
R
3.7.17.
DRT – DRAM Timing Register – Device #0
Offset:
78-7Bh
Default:
00000010h
Access:
Read/Write
Size:
32 bits
Bit
Description
31:19
Reserved
18:16
DRAM Idle Timer: This field determines the number of clocks the DRAM controller will remain in the
idle state before it begins precharging all pages.
000
Infinite
001 0
010 8 DRAM clocks
011 16 DRAM clocks
100 64 DRAM clocks
Others: reserved
15:11
Reserved
10:9
Activate to Precharge delay (tRAS). This bit controls the number of DRAM clocks for tRAS.
00 7 Clocks
01 6 Clocks
10 5 Clocks
11 Reserved
8:6
Reserved
5:4
CAS# Latency (tCL). This bit controls the number of DRAM Clocks between when a read command
is sampled by the SDRAMs and when the MCH-M samples read data from the SDRAMs.
00:
2.5
01:
2 Clocks
10:
Reserved
11:
Reserved
3
Reserved
2
DRAM RAS# to CAS# Delay (tRCD). This bit controls the number of clocks inserted between a row
activate command and a read or write command to that row.
Encoding
tRCD
0:
3 DRAM Clocks (Default)
1:
2 DRAM Clocks
1
Reserved
0
DRAM RAS# Precharge (tRP). This bit controls the number of clocks that are inserted between a
row precharge command and an activate command to the same row.
Encoding
tRP
0:
3 DRAM Clocks(Default)
1:
2 DRAM Clocks
相關(guān)PDF資料
PDF描述
RG82870P2 Controller Miscellaneous - Datasheet Reference
RH5RE36AA-T1-FA 3.6 V FIXED POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PSSO3
RH5RE56AA-T1-FA 5.6 V FIXED POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PSSO3
RE5RE36AA-TZ-FC 3.6 V FIXED POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PBCY3
RE5RE36AC-TZ-FC 3.6 V FIXED POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PBCY3
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
RG82845PE S L6H5 制造商:Intel 功能描述:CHIPSTGMCH 82845PE HT-PBGA760
RG82845PESL6Q3 制造商:Intel 功能描述:Chipsets
RG82845-SL5V7 制造商:Intel 功能描述:INTEL 845G GRAPHICS AND MEMORY CONTROLLER HUB(GMCH)
RG82845SL5YQ 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Intel?? 845 Chipset: 82845 Memory Controller Hub (MCH) for SDR
RG82845-SL63W 制造商:Intel 功能描述:INTEL 845G GRAPHICS AND MEMORY CONTROLLER HUB(GMCH)