W631GG6KB
Note: Clock and Strobe are drawn
on a different time scale.
t IS
t IH
t IS
t IH
CK
CK#
DQS#
DQS
t DS
t DH
t DS
t DH
V DDQ
t VAC
nominal
line
V IH(AC) min
V REF to AC
region
V IH(DC) min
tangent
line
V REF(DC)
tangent
line
V IL(DC) max
V REF to AC
region
V IL(AC) max
nominal
line
V SS
t VAC
Δ TR
Δ TF
Setup Slew Rate
Rising Signal
Setup Slew Rate
Falling Signal
=
=
tangent line [V IH(AC) min - V REF(DC) ]
Δ TR
tangent line [V REF(DC) - V IL(AC) max]
Δ TF
Figure 109 – Illustration of tangent line for setup time t DS (for DQ with respect to strobe) and t IS
(for ADD/CMD with respect to clock)
Publication Release Date: Dec. 09, 2013
Revision A05
- 154 -
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