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參數(shù)資料
| 型號： | PPC440GP-3CC400EZ |
| 廠商： | APPLIEDMICRO INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Power PC 440GP Embedded Processor |
| 中文描述： | 32-BIT, 400 MHz, RISC PROCESSOR, CBGA552 |
| 封裝： | 25 X 25 MM, CERAMIC, BGA-552 |
| 文件頁數(shù)： | 77/83頁 |
| 文件大?。?/td> | 773K |
| 代理商： | PPC440GP-3CC400EZ |
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440GP – Power PC 440GP Embedded Processor
AMCC
77
Revision 1.07 – October 4, 2007
Data Sheet
Example 1:
If the data-to-PLB clock timing is as shown in the example below, then the read clock is not delayed and the Stage
1 data is sampled at
(1)
. Except for small, low frequency memory systems with the memory located physically
close to the PPC440GP, it is unlikely that Stage 1 data can be sampled. When the data comes later, it is necessary
to sample Stage 2 or Stage 3 data. (see Examples 2 and 3). Another way to get the desired data-to-PLB timing to
allow Stage 1 sampling is to buffer MemClkOut0 and skew it enough to guarantee the timing. In this example
T
T
= 1.5ns at worst case conditions.
DDR SDRAM Read Cycle Timing—Example 1
DQS at pin
PLB Clock
T
SIN
T
DIN
= Delay from data at package pin to D on Stage 1 FF.
T
T
= Propagation delay, Stage 1 input to RDSP input w/o ECC
T
SIN
= Delay from DQS at package pin to C on Stage 1 FF.
T
P
= Propagation delay through FFs
Data at pin
D0
D1
D2
D3
DQS Stage 1 C
D0
D1
D2
D3
T
DIN
D0
D2
Data in Stage 1 D
D1
D3
Data out Stage 1
High
Low
T
P
D0
D2
D1
D3
Data in at RDSP
with no ECC
High
Low
T
T
D0
D2
D1
D3
Data out RDSP
High
Low
(1)
D2
D2
T
P
D0
D0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PPC440GP-3CC466C | Power PC 440GP Embedded Processor |
| PPC440GP-3CC466CZ | Power PC 440GP Embedded Processor |
| PPC440GP-3CC500C | Power PC 440GP Embedded Processor |
| PPC440GP-3CC500CZ | Power PC 440GP Embedded Processor |
| PPC440GP-3FC400C | Power PC 440GP Embedded Processor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PPC440GP-3CC466C | 制造商:AMCC 制造商全稱:Applied Micro Circuits Corporation 功能描述:Power PC 440GP Embedded Processor |
| PPC440GP-3CC466CZ | 制造商:AMCC 制造商全稱:Applied Micro Circuits Corporation 功能描述:Power PC 440GP Embedded Processor |
| PPC440GP-3CC500C | 制造商:AMCC 制造商全稱:Applied Micro Circuits Corporation 功能描述:Power PC 440GP Embedded Processor |
| PPC440GP-3CC500CZ | 制造商:AMCC 制造商全稱:Applied Micro Circuits Corporation 功能描述:Power PC 440GP Embedded Processor |
| PPC440GP-3FC400C | 制造商:AMCC 制造商全稱:Applied Micro Circuits Corporation 功能描述:Power PC 440GP Embedded Processor |
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