參數(shù)資料
型號(hào): 440SPE
廠商: Applied Micro Circuits Corp.
英文描述: PowerPC 440SPe Embedded Processor
中文描述: 嵌入式處理器的PowerPC 440SPe
文件頁(yè)數(shù): 74/80頁(yè)
文件大?。?/td> 572K
代理商: 440SPE
PowerPC 440SPe Embedded Processor
76
AMCC Proprietary
Revision 1.23 - Sept 21, 2006
Preliminary Data Sheet
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
DQS at
PLB 1X Clock
Data at Pin
D0
D2
High
Low
Feedback
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
Data Out Stage 2
D1
D3
DDR 1X Clock
DDR 2X Clock
Memclk (Diff.)
Data Out Stage 1 (0)
Delayed DQS
Data out Stage 1 (2)
Data Out Stage 1 (1)
Output
1X DDR Clk cycle
MemCntl Pin
Valid
Store 1st Data in Stage 2
T1
T2
T3
T4
Oversampling Guard Band
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