參數(shù)資料
型號: PPC440GX-3CF533CZ
廠商: APPLIEDMICRO INC
元件分類: 微控制器/微處理器
英文描述: Power PC 440GX Embedded Processor
中文描述: 32-BIT, 533 MHz, RISC PROCESSOR, CBGA552
封裝: 25 X 25 MM, CERAMIC, FBGA-552
文件頁數(shù): 87/93頁
文件大?。?/td> 794K
代理商: PPC440GX-3CF533CZ
440GX – Power PC 440GX Embedded Processor
AMCC
87
Revision 1.15 – August 30, 2007
Data Sheet
Example 2:
In this example Read Clock is delayed almost 1/2 cycle. Without ECC, Stage 2 data can be sampled at
(2)
. If ECC
is enabled, Stage 3 data must be sampled (see Example 3). In this example, T
T
= 1.27ns and T
TE
= 3.589ns at
worst case conditions.
DDR SDRAM Read Cycle Timing—Example 2
DQS at pin
PLB Clock
Read Clock Delayed
T
SIN
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
without ECC
High
Low
T
T
= Propagation delay from Stage 2 input to RDSP input w/o ECC
T
TE
= Propagation delay from Stage 2 input to RDSP input with ECC
D0
D2
D1
D3
Data out Stage 2
High
Low
Data out at RDSP
without ECC
High
Low
(2)
T
P
D0
D2
D1
D3
Data in at RDSP
with ECC
High
Low
D0
D2
D1
D3
T
T
T
TE
D0
D2
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