MCF547X datasheet(21/34 Pages) FREESCALE

tên linh kiện	MCF547X

Giải thích chi tiết về linh kiện	MCF547x ColdFire짰 Microprocessor

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PCI Bus

MCF547x ColdFire® Microprocessor, Rev. 4

Freescale Semiconductor

Figure 17. DDR Read Timing

PCI Bus

The PCI bus on the MCF54

7x 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.

Table 14. PCI Timing Specifications

Num

Characteristic

Min

Max

Unit

Notes

Frequency of Operation

MHz

Clock Period (tCK)

15.15

Address, Data, and Command (33

< PCI ≤ 66 Mhz)—Input Setup (t

IS)3.0

—

Address, Data, and Command (0

< PCI ≤ 33 Mhz)—Input Setup (t

IS)7.0

—

Address, Data, and Command (33–66 Mhz)—Output Valid (tDV)—

6.0

Address, Data, and Command (0–33 Mhz) - Output Valid (tDV)

—

11.0

PCI signals (0–66 Mhz) - Output Hold (tDH)0

—

SDCLK0

SDCLK1

SDCSn,SDWE,

SDDQS

SDDATA

SDADDR,

RAS, CAS

SDBA[1:0]

CMD

ROW

DD1

DD5

DD4

WD1 WD2 WD3 WD4

SDDQS

DD9

SDCLK0

SDCLK1

DD3

DD2

SDDATA

WD1 WD2 WD3 WD4

DD10

CL=2

CL=2.5

COL

DQS Read

Preamble

DQS Read

Postamble

DQS Read

Preamble

DQS Read

Postamble

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