Datasheet
Table Of Contents
- Description
- Features
- Ordering Information
- Key Parameters
- Speed Grade
- Address Table
- Pin Descriptions
- Input/Output Functional Descriptions
- Pin Assignments
- Registering Clock Driver Specifications
- On DIMM Thermal Sensor
- Functional Block Diagram
- 4GB, 512Mx72 Module(1Rank of x8)
- 8GB, 1Gx72 Module(1Rank of x4) - page1
- 8GB, 1Gx72 Module(1Rank of x4) - page2
- 8GB, 1Gx72 Module(2Rank of x8) - page1
- 8GB, 1Gx72(2Rank of x8) - page2
- 16GB, 2Gx72 Module(2Rank of x4) - page1
- 16GB, 2Gx72 Module(2Rank of x4) - page2
- 16GB, 2Gx72 Module(2Rank of x4) - page3
- 32GB, 4Gx72 Module(4Rank of x4) - page1
- 32GB, 4Gx72 Module(4Rank of x4) - page2
- 32GB, 4Gx72 Module(4Rank of x4) - page3
- 32GB, 4Gx72 Module(4Rank of x4) - page4
- 32GB, 4Gx72 Module(4Rank of x4) - page5
- Absolute Maximum Ratings
- AC & DC Operating Conditions
- AC & DC Input Measurement Levels
- Vref Tolerances
- AC and DC Logic Input Levels for Differential Signals
- Differential signal definition
- Differential swing requirements for clock (CK - CK) and strobe (DQS-DQS)
- note : Rising input differential signal shall become equal to or greater than VIHdiff(ac) level and Falling input differential signal shall become equal to or less than VIL(ac) level.
- Single-ended requirements for differential signals
- Differential Input Cross Point Voltage
- Slew Rate Definitions for Single-Ended Input Signals
- Slew Rate Definitions for Differential Input Signals
- AC & DC Output Measurement Levels
- Overshoot and Undershoot Specifications
- Refresh parameters by device density
- Standard Speed Bins
- Environmental Parameters
- IDD and IDDQ Specification Parameters and Test Conditions
- IDD Specifications (Tcase: 0 to 95oC)
- Module Dimensions
Rev. 1.0 / May. 2014 32
Single-ended requirements for differential signals
Each individual component of a differential signal (CK, DQS, DQSL, DQSU, CK, DQS, DQSL, of DQSU) has
also to comply with certain requirements for single-ended signals.
CK and CK have to approximately reach VSEHmin / VSELmax (approximately equal to the ac-levels (VIH
(ac) / VIL (ac)) for ADD/CMD signals) in every half-cycle.
DQS, DQSL, DQSU, DQS
, DQSL have to reach VSEHmin / VSELmax (approximately the ac-levels (VIH (ac)
/ VIL (ac)) for DQ signals) in every half-cycle preceding and following a valid transition.
Note that the applicable ac-levels for ADD/CMD and DQ’s might be different per speed-bin etc. E.g., if
VIH.CA(AC150)/VIL.CA(AC150) is used for ADD/CMD signals, then these ac-levels apply also for the single-
ended signals CK and CK
.
Single-ended requirements for differential signals.
Note that, while ADD/CMD and DQ signal requirements are with respect to Vref, the single-ended compo-
nents of differential signals have a requirement with respect to VDD / 2; this is nominally the same. the
transition of single-ended signals through the ac-levels is used to measure setup time. For single-ended
components of differential signals the requirement to reach VSELmax, VSEHmin has no bearing on timing,
but adds a restriction on the common mode characteristics of these signals.
VDD or VDDQ
VSEHmin
VDD/2 or VDDQ/2
VSEH
VSELmax
VSS or VSSQ
CK or DQS
VSEL
time