参数资料
型号: 440SP
厂商: Applied Micro Circuits Corp.
英文描述: PowerPC 440SP Embedded Processor
中文描述: 嵌入式处理器的PowerPC 440SP
文件页数: 81/85页
文件大小: 615K
代理商: 440SP
PowerPC 440SP Embedded Processor
82
AMCC Proprietary
Revision 1.23 - Sept 26, 2006
Data Sheet
The following figure 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
Oversampling Guard Band
Valid
Store 1st Data in Stage 2
T1
T2
T3
T4
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