ppc440gr-3jb667cz Applied Micro Circuits Corporation (AMCC), ppc440gr-3jb667cz Datasheet - Page 84

• Manufacturer Part Number: ppc440gr-3jb667cz
• Description: Powerpc 440gr Embedded Processor
• Manufacturer: Applied Micro Circuits Corporation (AMCC)

Example 3:
In this example, ECC is enabled. This requires that Stage 3 data be sampled at
will still work, but there will be more latency before the data is sampled into RDSP. In this example, T
controlled and set by the software.
Figure 14. DDR SDRAM Read Cycle Timing—Example 3
84
Read Clock Delayed
Revision 1.19 – May 07, 2008
Preliminary Data Sheet
Data in Stage 1 D
Data out Stage 1
Data out Stage 3
DQS Stage 1 C
Data in at RDSP
Data out RDSP
Data out Stage 2
Data at pin
DQS at pin
PLB Clock
with ECC
with ECC
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
D2
D0
D2
D1
D2
D3
T
440GR – PPC440GR Embedded Processor
TE
D3
D2
D3
D0
D1
D3
D2
(3)
D0
D1
(3)
. If ECC is disabled, the system
D2
D3
D0
D1
D2
D3
AMCC Proprietary
T
and T
D2
D3
TE
are