參數(shù)資料
型號: NT5TU64M16DG-3C
廠商: NANYA TECHNOLOGY CORP
元件分類: DRAM
英文描述: 64M X 16 DDR DRAM, 0.45 ns, PBGA84
封裝: GREEN, BGA-84
文件頁數(shù): 11/85頁
文件大?。?/td> 2622K
代理商: NT5TU64M16DG-3C
NT5TU256M4GE / NT5TU128M8GE / NT5TU64M16GG
1Gb DDR2 SDRAM
19
REV 1.0
06 / 2010
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; DQS Low
Test
EMRS :
Enter Adjus t Mode
BL=4 cod e inpu t to all DQs
Inc, Dec, or NOP
EMRS: Drive(0)
DQ & DQS Low; DQS High
Test
EMRS :
Enter Adjust Mode
BL =4 code input to all DQs
Inc, Dec, or NOP
EMRS: OCD calibration mode exit
End
AL L 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
Need Calibration
相關PDF資料
PDF描述
NTA2425E
NTA2425F
NTA2410-10
NTD2410F
NTA2425-10
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