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| W632GG8KB Datasheet, PDF (48/159 Pages) Winbond – 32M X 8 BANKS X 8 BIT DDR3 SDRAM | |||
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W632GG8KB
8.13.2.4 tRPRE Calculation
The method for calculating differential pulse widths for tRPRE is shown in Figure 27.
CK
VTT
CK#
tA
DQS
Single ended signal, provided
as background information
tB
VTT
tC
DQS#
Single ended signal, provided
as background information
tD
VTT
t1
tRPRE_begin
DQS - DQS#
Resulting differential signal,
relevant for tRPRE specification
tRPRE
0
t2
tRPRE_end
Figure 27 â Method for calculating tRPRE transitions and endpoints
8.13.2.5 tRPST Calculation
The method for calculating differential pulse widths for tRPST is shown in Figure 28.
CK
VTT
CK#
DQS
Single ended signal, provided
as background information
tA
tB
VTT
DQS#
Single ended signal, provided
as background information
tC
tD
VTT
DQS - DQS#
tRPST
0
Resulting differential signal,
relevant for tRPST specification
t1
tRPST_begin
t2
tRPST_end
Figure 28 â Method for calculating tRPST transitions and endpoints
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Publication Release Date: Dec. 08, 2014
Revision: A04
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