MCF5485 FREESCALE [Freescale Semiconductor, Inc], MCF5485 Datasheet - Page 21

• Manufacturer Part Number: MCF5485
• Description: Integrated Microprocessor Electrical Characteristics
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

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The PCI bus on the MCF5485 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
P1
P2
P3
P4
P5
P6
—
SDCSn,SDWE,
PCI Bus
RAS, CAS
SDBA[1:0]
SDADDR,
Frequency of Operation
Clock Period (t
Address, Data, and Command (33< PCI ≤ 50 Mhz)—Input Setup (t
Address, Data, and Command (0 < PCI ≤ 33 Mhz)—Input Setup (t
Address, Data, and Command (33–50 Mhz)—Output Valid (t
Address, Data, and Command (0–33 Mhz) - Output Valid (t
PCI signals (0–50 Mhz) - Output Hold (t
SDCLK0
SDCLK1
SDCLK0
SDCLK1
SDDATA
SDDATA
SDDQS
SDDQS
MCF5485 Integrated Microprocessor Electrical Characteristics, Rev. 3
CK
DD4
)
ROW
CMD
Table 14. PCI Timing Specifications
Characteristic
DD1
Figure 17. DDR Read Timing
DD5
DH
)
COL
CL=2
CL=2.5
DD2
DQS Read
DV
Preamble
DD10
DV
)
)
DQS Read
DD3
Preamble
IS
IS
)
)
WD1 WD2 WD3 WD4
Min
3.0
7.0
25
20
—
—
0
WD1 WD2 WD3 WD4
DD9
Max
11.0
6.0
50
40
—
—
—
DQS Read
Postamble
MHz
Unit
DQS Read
Postamble
ns
ns
ns
ns
ns
ns
Notes
—
—
—
1
2
3
4
PCI Bus
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