
MPC8541E PowerQUICC III Integrated Communications Processor Hardware Specification, Rev. 3.2
18
Freescale Semiconductor
DDR SDRAM
Figure 3 shows the DDR SDRAM output timing for address skew with respect to any MCK.
Figure 3. Timing Diagram for tAOSKEW Measurement
Figure 4 shows the DDR SDRAM output timing diagram for the source synchronous mode.
Figure 4. DDR SDRAM Output Timing Diagram for Source Synchronous Mode
ADDR/CMD
MCK[n]
tMCK
tAOSKEWmax)
CMD
NOOP
tAOSKEW(min)
ADDR/CMD
CMD
NOOP
ADDR/CMD
tDDKHAS ,tDDKHCS
tDDKHMH
tDDKLDS
tDDKHDS
MDQ[x]
MDQS[n]
MCK[n]
tMCK
tDDKLDX
tDDKHDX
D1
D0
tDDKHAX ,tDDKHCX
Write A0
NOOP
tDDKLME
tDDKHMP