W631GG6KB
8.14.4 t WPRE Calculation
The method for calculating differential pulse widths for t WPRE is shown in Figure 41.
CK
V TT
CK#
t1
t WPRE _begin
DQS - DQS#
Resulting differential signal,
relevant for t WPRE specification
t WPRE
t2
t WPRE _end
0V
Figure 41 – Method for calculating t WPRE transitions and endpoints
8.14.5 t WPST Calculation
The method for calculating differential pulse widths for t WPST is shown in Figure 42.
CK
V TT
CK#
DQS - DQS#
Resulting differential signal,
relevant for t WPST specification
t1
t WPST _begin
t WPST
0V
t2
t WPST _end
Figure 42 – Method for calculating t WPST transitions and endpoints
Publication Release Date: Dec. 09, 2013
Revision A05
- 58 -
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