Hynix HMT325U7CFR8C-PBT0 Benutzerhandbuch
Delta
TFdiff
Delta
TRdiff
V
IHdiffmin
V
ILdiffmax
0
D
iffer
en
tial
I
npu
t Vo
ltage
(i
.e
.
DQ
S-D
Q
S;
CK-CK)
Rev. 1.2 / Jul. 2013
25
Slew Rate Definitions for Single-Ended Input Signals
See 7.5 “Address / Command Setup, Hold and Derating” in “DDR3 Device Operation” for single-ended slew
rate definitions for address and command signals.
See 7.6 “Data Setup, Hold and Slew Rate Derating” in “DDR3 Device Operation” for single-ended slew rate
definition for data signals.
definition for data signals.
Slew Rate Definitions for Differential Input Signals
Input slew rate for differential signals (CK, CK and DQS, DQS) are defined and measured as shown in table
and figure below.
and figure below.
Notes:
The differential signal (i.e. CK-CK and DQS-DQS) must be linear between these thresholds.
The differential signal (i.e. CK-CK and DQS-DQS) must be linear between these thresholds.
Differential Input Slew Rate Definition for DQS, DQS and CK, CK
Differential Input Slew Rate Definition
Description
Measured
Defined by
Min
Max
Differential input slew rate for rising edge
(CK-CK and DQS-DQS)
(CK-CK and DQS-DQS)
V
ILdiffmax
V
IHdiffmin
[V
IHdiffmin
-V
ILdiffmax
] / DeltaTRdiff
Differential input slew rate for falling edge
(CK-CK and DQS-DQS)
(CK-CK and DQS-DQS)
V
IHdiffmin
V
ILdiffmax
[V
IHdiffmin
-V
ILdiffmax
] / DeltaTFdiff