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參數(shù)資料
| 型號(hào)： | 440GR |
| 廠商： | Applied Micro Circuits Corp. |
| 英文描述： | Power PC 440GR Embedded Processor |
| 中文描述： | 440GR的Power PC嵌入式處理器 |
| 文件頁數(shù)： | 74/82頁 |
| 文件大?。?/td> | 527K |
| 代理商： | 440GR |
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76
AMCC Proprietary
Revision 1.16 – July 19, 2006
Preliminary Data Sheet
440GR – PPC440GR Embedded Processor
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 PPC440GR, 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, TT is
controlled and set by the software.
Figure 11. DDR SDRAM Read Cycle Timing—Example 1
DQS at pin
PLB Clock
TSIN
TDIN = Delay from data at package pin to D on Stage 1 FF.
TSIN = Delay from DQS at package pin to C on Stage 1 FF.
Data at pin
D0
D1
D2
D3
DQS Stage 1 C
D0
D1
D2
D3
TDIN
D0
D2
Data in Stage 1 D
D1
D3
Data out Stage 1
High
Low
TP
D0
D2
D1
D3
Data in at RDSP
High
Low
with no ECC
TT
TP = Propagation delay through FFs
TT = Propagation delay, Stage 1 input to RDSP input w/o ECC
D0
D2
D1
D3
Data out RDSP
High
Low
(1)
D2
TP
D0
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 440GRX | 制造商:AMCC 制造商全稱:Applied Micro Circuits Corporation 功能描述:PowerPC 440GRx Embedded Processor |
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| 440GS001NF2535-4 | 功能描述:環(huán)形MIL規(guī)格后蓋 CRIMIP RING ADPTR DC STRAIGHT RoHS:否 制造商:Amphenol PCD MIL 類型:MIL-DTL-38999 III, IV 系列:AS85049 產(chǎn)品類型:Environmental EMI/RFI Backshells 外殼類型:Straight 外殼大小:18 外殼材質(zhì):Aluminum Alloy |
| 440GS031B2912-4 | 制造商:Glenair Inc 功能描述:Shrink Boot Adapters 180° 29 Shell Size Olive Drab Cadmium Aluminum Direct 制造商:Glenair 功能描述:Shrink Boot Adapters 180° 29 Shell Size Olive Drab Cadmium Aluminum Direct |
| 440GS031B3314-4 | 制造商:Glenair Inc 功能描述:Shrink Boot Adapters 180° 33 Shell Size Olive Drab Cadmium Aluminum Direct 制造商:Glenair 功能描述:Shrink Boot Adapters 180° 33 Shell Size Olive Drab Cadmium Aluminum Direct |
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