W632GU8KB Datasheet, PDF (58/160 Pages) Winbond – 32M X 8 BANKS X 8 BIT DDR3L SDRAM

W632GU8KB
8.14.4 tWPRE Calculation
The method for calculating differential pulse widths for tWPRE is shown in Figure 41.
CK
VTT
CK#
t1
tWPRE_begin
DQS - DQS#
Resulting differential signal,
relevant for tWPRE specification
tWPRE
0V
t2
tWPRE_end
Figure 41 – Method for calculating tWPRE transitions and endpoints
8.14.5 tWPST Calculation
The method for calculating differential pulse widths for tWPST is shown in Figure 42.
CK
VTT
CK#
tWPST
DQS - DQS#
0V
Resulting differential signal,
t1
relevant for tWPST specification
tWPST_begin
t2
tWPST_end
Figure 42 – Method for calculating tWPST transitions and endpoints
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Publication Release Date: Jan. 20, 2015
Revision: A05