ppc440spe Applied Micro Circuits Corporation (AMCC), ppc440spe Datasheet - Page 76

• Manufacturer Part Number: ppc440spe
• Description: Powerpc 440spe Embedded Processor
• Manufacturer: Applied Micro Circuits Corporation (AMCC)

PowerPC 440SPe Embedded Processor
The following example shows the timing relationship between SDRAM DDR Data at the input pin and the store of
the Data in stage 1.
Figure 11. DDR SDRAM Read Cycle Timing—Example
76
DDR 1X Clock
DDR 2X Clock
Memclk (Diff.)
DQS at
MemCntl Pin
Data at Pin
Feedback
Output
Delayed DQS
Data Out Stage 1 (0)
Data Out Stage 1 (1)
Data out Stage 1 (2)
Data Out Stage 2
PLB 1X Clock
High
Low
1X DDR Clk cycle
D0
D1
Oversampling Guard Band
D2
Valid
T1
D3
D4
T2
Store 1st Data in Stage 2
D0
D1
D5
T3
D6
Preliminary Data Sheet
D7
Revision 1.23 - Sept 21, 2006
D8
D2
D3
T4
D9
AMCC Proprietary