參數(shù)資料
型號: EDE5104AJSE
廠商: Elpida Memory, Inc.
英文描述: EDE5104AJSE
中文描述: EDE5104AJSE
文件頁數(shù): 40/77頁
文件大?。?/td> 604K
代理商: EDE5104AJSE
EDE5104AJSE, EDE5108AJSE, EDE5116AJSE
Data Sheet E1043E40 (Ver. 4.0)
40
Off-Chip Driver (OCD) Impedance Adjustment
DDR2 SDRAM supports driver calibration feature and the OCD Flow Chart is an example of 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.
Test
Test
ALL OK
ALL OK
Need calibration
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: Drive(0)
DQ & DQS low ; /DQS high
EMRS: Drive(1)
DQ & DQS high ; /DQS low
EMRS: OCD calibration mode exit
EMRS: OCD calibration mode exit
EMRS :
Enter Adjust Mode
EMRS :
Enter Adjust Mode
BL=4 code input to all DQs
Inc, Dec, or NOP
EMRS: OCD calibration mode exit
BL=4 code input to all DQs
Inc, Dec, or NOP
EMRS: OCD calibration mode exit
EMRS: OCD calibration mode exit
Start
End
OCD Flow Chart
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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