MCF5481 FREESCALE [Freescale Semiconductor, Inc], MCF5481 Datasheet - Page 17

• Manufacturer Part Number: MCF5481
• Description: Microprocessor Electrical Characteristics
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

10
The PCI bus on the MCF548x is PCI 2.2 compliant. The following timing numbers are mostly from the
PCI 2.2 spec. Please refer to the PCI 2.2 spec for a more detailed timing analysis.
Freescale Semiconductor
Num
SDCSn,SDWE,
P1
P2
P3
P4
P5
PCI Bus
RAS, CAS
SDBA[1:0]
SDADDR,
SDCLK0
SDCLK1
SDCLK0
SDCLK1
SDDATA
SDDATA
Frequency of Operation
Clock Period (t
Address, Data, and Command (33< PCI ≤ 66 Mhz)—Input Setup (t
Address, Data, and Command (0 < PCI ≤ 33 Mhz)—Input Setup (t
Address, Data, and Command (33-66 Mhz) - Output Valid (t
Address, Data, and Command (0 -33 Mhz) - Output Valid (t
SDDQS
SDDQS
MCF548x Integrated Microprocessor Electrical Characteristics, Rev. 2.1
DD4
CK
)
ROW
CMD
Table 14. PCI Timing Specifications
Characteristic
DD1
Figure 13. DDR Read Timing
DD5
COL
CL=2
CL=2.5
DD2
DQS Read
Preamble
DV
DD10
DV
)
)
DQS Read
DD3
Preamble
IS
IS
)
)
WD1 WD2 WD3 WD4
15.15
Min
3.0
7.0
25
—
—
WD1 WD2 WD3 WD4
DD9
33.33
Max
11.0
6.0
66
—
—
DQS Read
Postamble
MHz
DQS Read
Postamble
Unit
ns
ns
ns
ns
ns
Notes
1
2
3
PCI Bus
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