MSC8156 Freescale Semiconductor, Inc, MSC8156 Datasheet - Page 37

• Manufacturer Part Number: MSC8156
• Description: Six-core Digital Signal Processor
• Manufacturer: Freescale Semiconductor, Inc

Figure 11
2.6.1.2
Table 21
Freescale Semiconductor
MCK[n] cycle time
ADDR/CMD output setup with respect to MCK
• 800 MHz data rate
• 667 MHz data rate
ADDR/CMD output hold with respect to MCK
• 800 MHz data rate
• 667 MHz data rate
MCSn output setup with respect to MCK
• 800 MHz data rate
• 667 MHz data rate
MCSn output hold with respect to MCK
• 800 MHz data rate
• 667 MHz data rate
MCK to MDQS Skew
• 800 MHz data rate
• 667 MHz data rate
MDQ/MECC/MDM output setup with respect to MDQS
• 800 MHz
• 667 MHz
MDQ/MECC/MDM output hold with respect to MDQS
• 800 MHz
• 667 MHz
MDQS preamble
MDQS postamble
MCK[n]
MCK[n]
MDQS[n]
MDQ[n]
provides the output AC timing specifications for the DDR SDRAM interface.
shows the DDR2 and DDR3 SDRAM interface input timing diagram.
DDR SDRAM Output AC Timing Specifications
Parameter
Figure 11. DDR2 and DDR3 SDRAM Interface Input Timing Diagram
Table 21. DDR SDRAM Output AC Timing Specifications
MSC8156 Six-Core Digital Signal Processor Data Sheet, Rev. 1
t
t
MCK
DISKEW
Symbol
t
t
t
t
t
t
t
t
t
D0
t
t
DDKHDS,
DDKHDX,
DDKHMH
DDKHMP
DDKHME
DDKHAS
DDKHAX
DDKHCS
DDKHCX
DDKLDS
DDKLDX
t
MCK
1
D1
t
DISKEW
–0.9 × t
–0.4 × t
0.917
0.767
0.917
0.767
1.10
1.02
1.10
1.02
–0.4
–0.6
Min
300
375
300
375
2.5
t
DISKEW
MCK
MCK
–0.6 × t
0.375
Max
0.6
—
—
—
—
—
—
—
—
—
—
—
—
—
5
MCK
Electrical Characteristics
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ps
ps
ps
ps
ns
ns
Notes
—
—
2
3
3
3
3
4
5
5
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