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EDE1116ABSE-6E-E Datasheet(PDF) 48 Page - Elpida Memory |
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EDE1116ABSE-6E-E Datasheet(HTML) 48 Page - Elpida Memory |
48 / 82 page EDE1104ABSE, EDE1108ABSE, EDE1116ABSE Data Sheet E0852E50 (Ver. 5.0) 48 ODT (On Die Termination) On Die Termination (ODT), is a feature that allows a DRAM to turn on/off termination resistance for each DQ, DQS, /DQS, RDQS, /RDQS, and DM signal via the ODT control pin. The ODT feature is designed to improve signal integrity of the memory channel by allowing the DRAM controller to independently turn on/off termination resistance for any or all DRAM devices. The ODT function is turned off and not supported in self-refresh mode. Switch sw1, sw2 or sw3 is enabled by ODT pin. Selection between sw1, sw2 or sw3 is determined by Rtt (nominal) in EMRS Termination included on all DQs, DM, DQS, /DQS, RDQS and /RDQS pins. Target Rtt ( Ω) = (Rval1) / 2, (Rval2) / 2 or (Rval3) / 2 DRAM input buffer VDDQ VSSQ sw1 sw1 sw2 Rval1 Rval1 Input Pin VDDQ VSSQ sw2 Rval2 Rval2 sw3 VDDQ VSSQ sw3 Rval3 Rval3 Functional Representation of ODT Command EMRS NOP Old setting tMOD (min.) tMOD (max.) tAOFD tIS Updating New Setting CK /CK ODT Rtt Note: tAOFD must be met before issuing EMRS command. ODT must remain low for the entire duration of tMOD window. ODT update Delay Timing |
Similar Part No. - EDE1116ABSE-6E-E |
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Similar Description - EDE1116ABSE-6E-E |
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