Figure 7-9, Ddr read timing measurement points, Figure 7-9 "ddr read timing mea – AMD Geode LX [email protected] User Manual
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616
AMD Geode™ LX Processors Data Book
Electrical Specifications
33234H
Figure 7-9. DDR Read Timing Measurement Points
DQ Inputs
V
REF
DQ
t
V
REF
DQ
t-1
SDCLK0
DQS ‘Late’ Input
V
REF
other DQS Input
V
REF
DQ
t+1
DQ
t+2
DQS[n] Input
V
REF
t
SKEW2
t
DQSCK
Max
DQS ‘Early’ Input
V
REF
t
DQSCK
Min
t
SKEW2
-t
DQSQs
t
DQSQh
associated with DQS[n]
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