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Unbuffered DIMM
11.4 Slew Rate Definition for Single Ended Input Signals
See "Address / Command Setup, Hold and Derating" for single-ended slew rate definitions for address and command signals.
See "Data Setup, Hold and Slew Rate Derating" for single-ended slew rate definitions for data signals.
11.5 Slew rate definition for Differential Input Signals
Input slew rate for differential signals (CK, CK and DQS, DQS) are defined and measured as shown in below.
[ Table 9 ] Differential input slew rate definition
Description
Differential input slew rate for rising edge (CK-CK and DQS-DQS)
Differential input slew rate for falling edge (CK-CK and DQS-DQS)
NOTE : The differential signal (i.e. CK - CK and DQS - DQS) must be linear between these thresholds
12. AC & DC Output Measurement Levels
12.1 Single Ended AC and DC Output Levels
[ Table 10 ] Single Ended AC and DC output levels
Symbol
Parameter
V
(DC)
DC output high measurement level (for IV curve linearity)
OH
V
(DC)
DC output mid measurement level (for IV curve linearity)
OM
V
(DC)
DC output low measurement level (for IV curve linearity)
OL
V
(AC)
AC output high measurement level (for output SR)
OH
V
(AC)
AC output low measurement level (for output SR)
OL
NOTE : 1. The swing of +/-0.1 x V
DDQ
load of 25Ω to V
=V
TT
DDQ
12.2 Differential AC and DC Output Levels
[ Table 11 ] Differential AC and DC output levels
Symbol
Parameter
V
(AC)
AC differential output high measurement level (for output SR)
OHdiff
V
(AC)
AC differential output low measurement level (for output SR)
OLdiff
NOTE : 1. The swing of +/-0.2xV
DDQ
load of 25Ω to V
=V
TT
DDQ
datasheet
delta TFdiff
Figure 6. Differential input slew rate definition for DQS, DQS and CK, CK
is based on approximately 50% of the static single ended output high or low swing with a driver impedance of 40Ω and an effective test
/2.
is based on approximately 50% of the static single ended output high or low swing with a driver impedance of 40Ω and an effective test
/2 at each of the differential outputs.
Measured
From
To
V
V
ILdiffmax
IHdiffmin
V
V
IHdiffmin
ILdiffmax
V
IHdiffmin
0
V
ILdiffmax
delta TRdiff
DDR3-800/1066/1333/1600
0.8 x V
0.5 x V
0.2 x V
V
+ 0.1 x V
TT
V
- 0.1 x V
TT
DDR3-800/1066/1333/1600
+0.2 x V
-0.2 x V
- 19 -
Rev. 1.0
DDR3L SDRAM
Defined by
V
- V
IHdiffmin
ILdiffmax
Delta TRdiff
V
- V
IHdiffmin
ILdiffmax
Delta TFdiff
Units
NOTE
V
DDQ
V
DDQ
V
DDQ
V
DDQ
V
DDQ
Units
NOTE
V
DDQ
V
DDQ
1
1
1
1
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