PPC440GR-3PBFFFCX AMCC [Applied Micro Circuits Corporation], PPC440GR-3PBFFFCX Datasheet - Page 77
PPC440GR-3PBFFFCX
Manufacturer Part Number
PPC440GR-3PBFFFCX
Description
Power PC 440GR Embedded Processor
Manufacturer
AMCC [Applied Micro Circuits Corporation]
Datasheet
1.PPC440GR-3PBFFFCX.pdf
(82 pages)
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Example 2:
In this example Read Clock is delayed almost 1/2 cycle. Without ECC, Stage 2 data can be sampled at
is enabled, Stage 3 data must be sampled (see Example 3). In this example, T
the software.
Figure 12. DDR SDRAM Read Cycle Timing—Example 2
AMCC Proprietary
440GR – PPC440GR Embedded Processor
Read Clock Delayed
Data out at RDSP
Data in Stage 1 D
Data out Stage 1
DQS Stage 1 C
Data in at RDSP
Data in at RDSP
Data out Stage 2
without ECC
without ECC
Data at pin
DQS at pin
PLB Clock
with ECC
T
DIN
High
Low
High
Low
High
Low
High
High
Low
Low
T
T
D0
SIN
T
T
P
TE
T
D0
= Propagation delay from Stage 2 input to RDSP input w/o ECC
= Propagation delay from Stage 2 input to RDSP input with ECC
D0
T
D1
P
D1
D0
D1
T
T
T
D2
TE
D0
D2
D1
(2)
D2
D3
D0
D1
D3
D2
D3
D0
D1
D0
D1
D2
D3
Preliminary Data Sheet
T
and T
D2
D3
Revision 1.16 – July 19, 2006
TE
are controlled and set by
D2
D3
D2
D3
(2)
. If ECC
77
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