參數(shù)資料
型號: HYB18T256400AF-3
廠商: INFINEON TECHNOLOGIES AG
英文描述: 256 Mbi t DDR2 SDRAM
中文描述: 256姆噸DDR2內(nèi)存
文件頁數(shù): 20/90頁
文件大?。?/td> 1246K
代理商: HYB18T256400AF-3
Page 20 Rev. 1.02 May 2004
INFINEON Technologies
HYB18T256400/800/160AF
256Mb DDR2 SDRAM
2.3 Off-Chip Driver (OCD) Impedance Adjustment
DDR2 SDRAM supports driver calibration feature and the flow chart below is an example of the sequence. Every
calibration mode command should be followed by “OCD calibration mode exit” before any other command being
issued. MRS should be set before entering OCD impedance adjustment and ODT (On Die Termination) should be
carefully controlled depending on system environment.
Start
EMRS: Drive(1)
DQ & DQS High; DQSLow
Test
EMRS :
Enter Adjus t Mode
BL=4 code input to all DQs
Inc, Dec, or NOP
EMRS: Drive(0)
DQ & DQS Low; DQSHigh
Test
EMRS :
Enter Adjust Mode
BL=4 code input to all DQs
Inc, Dec, or NOP
EMRS: OCD calibration mode exit
End
ALL OK
ALL OK
Need Calibration
EMRS: OCD calibration mode exit
MRS should be set before entering OCD impedance adjustment and ODT should
be carefully controlled depending on system environment
EMRS: OCD calibration mode exit
EMRS: OCD calibration mode exit
EMRS: OCD calibration mode exit
EMRS: OCD calibration mode exit
Need Calibration
相關(guān)PDF資料
PDF描述
HYB18T256400AF-37 256 Mbi t DDR2 SDRAM
HYB18T256400AF-3S 256 Mbi t DDR2 SDRAM
HYB18T256400AF-5 256 Mbi t DDR2 SDRAM
HYB18T256800AF 256 Mbi t DDR2 SDRAM
HYB18T256800AF-3 256 Mbi t DDR2 SDRAM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HYB18T256400AF-3.7 制造商:Infineon Technologies AG 功能描述:64M X 4 DDR DRAM, 0.5 ns, PBGA60
HYB18T256400AF-5 制造商:Infineon Technologies AG 功能描述:SDRAM, DDR, 64M x 4, 60 Pin, Plastic, BGA
HYB18T256800AF-5 制造商:Infineon Technologies AG 功能描述:
HYB18T512161BF-25 制造商:Qimonda 功能描述:SDRAM, DDR, 32M x 16, 84 Pin, Plastic, BGA
HYB18T512400AF-5 制造商:Intersil Corporation 功能描述:SDRAM, DDR, 128M x 4, 60 Pin, Plastic, BGA