405EX Datasheet, PDF (64/67 Pages) Applied Micro Circuits Corporation – PowerPC 405EX Embedded Processor

PPC405EX – PowerPC 405EX Embedded Processor
Figure 10. DDR SDRAM Read Cycle Timing—Example
Revision 1.09 - August 21, 2007
Preliminary Data Sheet
DDR 1X Clock
Oversampling Guard Band
DDR 2X Clock
Memclk (Diff.)
DQS at
MemCntl Pin
Data at Pin
Feedback
Output
DDR 1X Clock cycle
Delayed DQS
D0 D1
D2
D3 D4
D5 D6
Store 1st Data
in Stage 2
T1
T2
T3
D7 D8 D9
T4
Data Out Stage 1 (0)
Data Out Stage 1 (1)
Data out Stage 1 (2)
Data Out Stage 2
High
Low
Valid
D0
D2
D1
D3
PLB 1X Clock
64
AMCC Proprietary