參數(shù)資料
型號: V59C1G01808QBLF-19A
廠商: PROMOS TECHNOLOGIES INC
元件分類: DRAM
英文描述: DDR DRAM, PBGA68
封裝: ROHS COMPLIANT, FBGA-68
文件頁數(shù): 9/80頁
文件大小: 971K
代理商: V59C1G01808QBLF-19A
17
ProMOS TECHNOLOGIES
V59C1G01(408/808)QB
V59C1G01(408/808)QB Rev. 1.1 December 2008
ODT (on-die termination)
On DieTermination (ODT) is a feature that allows a DRAM to turn on/off termination resistance for each
DQS/DQS,RDQS/RDQS, and DM signal for x4/x8 configurations via the ODT control pin . The ODT
Input
Pin
Input
Buffer
DRAM
VSSQVSSQ
VDDQVDDQ
Rval2
Rval1
sw1
sw2
Selection among sw1, sw2, and sw3 is determined by “Rtt (nominal)” in EMR.
Termination included on all DQs, DM, DQS, DQS, RDQS, and RDQS pins.
Switch (sw1, sw2, sw3) is enabled by ODT pin.
VSSQ
VDDQ
Rval3
sw3
Functional representation of ODT
DQ,
feature is designed to improve signal integrity of the memory channel by allowing the DRAM controller to
independently turn on/off termination resistane for any or all DRAM devices.
The ODT function is supported for ACTIVE and STANDBY modes. ODT is turned off and not supported
in SELF REFRESH mode.
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