参数资料
型号: MCF5474VR266
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 266.66 MHz, RISC PROCESSOR, PBGA388
封装: 27 X 27 MM, MS-034AAL-1, PBGA-388
文件页数: 14/34页
文件大小: 600K
代理商: MCF5474VR266
PCI Bus
MCF547x ColdFire Microprocessor, Rev. 4
Freescale Semiconductor
21
Figure 17. DDR Read Timing
10
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
25
66
MHz
1
P1
Clock Period (tCK)
15.15
40
ns
2
P2
Address, Data, and Command (33
< PCI ≤ 66 Mhz)—Input Setup (t
IS)3.0
ns
P3
Address, Data, and Command (0
< PCI ≤ 33 Mhz)—Input Setup (t
IS)7.0
ns
P4
Address, Data, and Command (33–66 Mhz)—Output Valid (tDV)—
6.0
ns
3
P5
Address, Data, and Command (0–33 Mhz) - Output Valid (tDV)
11.0
ns
P6
PCI signals (0–66 Mhz) - Output Hold (tDH)0
ns
4
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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相关代理商/技术参数
参数描述
MCF5474VR266 制造商:Freescale Semiconductor 功能描述:Microprocessor IC
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