參數(shù)資料
型號(hào)： MPC8275VRMIBA
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 66.67 MHz, RISC PROCESSOR, PBGA516
封裝： 27 X 27 MM, 1 MM PITCH, LEAD FREE, PLASTIC, FBGA-516
文件頁數(shù)： 81/156頁
文件大?。?/td> 1680K
代理商： MPC8275VRMIBA
30
MPC8280 PowerQUICC II Family Hardware Specications
MOTOROLA
Clock Conguration Modes
1101_101
125.0 166.7
2
250.0 333.3
3
375.0 500.0
5
50.0 66.7
1101_110
125.0 166.7
2
250.0 333.3
4
500.0 666.6
5
50.0 66.7
1110_000
100.0 133.3
3
300.0 400.0
3.5
350.0 466.6
6
50.0 66.7
1110_001
100.0 133.3
3
300.0 400.0
4
400.0 533.3
6
50.0 66.7
1110_010
100.0 133.3
3
300.0 400.0
4.5
450.0 599.9
6
50.0 66.7
1110_011
100.0 133.3
3
300.0 400.0
5
500.0 666.6
6
50.0 66.7
1110_100
100.0 133.3
3
300.0 400.0
5.5
550.0 733.3
6
50.0 66.7
1100_000
Reserved
1100_001
Reserved
1100_010
Reserved
1 “Low” values are the minimum allowable frequencies for a given clock mode. The minimum bus frequency guarantees
the required minimum CPU operating frequency. Minimum CPU frequency is determined by the clock mode.
For modes with a CPU multiplication factor
≤ 3, the minimum CPU frequency is 166 MHz.The minimum CPM frequency
is 133 MHz.
For modes with a CPU multiplication factor
≥ 3.5, the minimum CPU frequency is 250 MHz. The minimum CPM
frequency is as shown in the table.
“High” values are for the purpose of illustration only. Users must select a mode and input bus frequency so that the
resulting conguration does not exceed the frequency rating of the user’s device.
2 As Table 14 shows, PCI_MODCK determines the PCI clock frequency range. Refer to Table 17 for lower congurations.
3 MODCK_H = hard reset conguration word [28–31]. MODCK[1-3] = three hardware conguration pins.
4 60x and local bus frequency. Identical to CLKIN.
5 CPM multiplication factor = CPM clock/bus clock
6 CPU multiplication factor = Core PLL multiplication factor
Table 17. Clock Congurations for PCI Host Mode (PCI_MODCK=1)1,2
Mode3
Bus Clock4
(MHz)
CPM
Multiplication
Factor5
CPM Clock
(MHz)
CPU
Multiplication
Factor6
CPU Clock
(MHz)
PCI
Division
Factor
PCI Clock
(MHz)
MODCK_H-
MODCK[1-3]
low
high
low
high
low
high
low high
Default Modes (MODCK_H=0000)
0000_000
66.7
100.0
2
133.3 200.0
2.5
166.7 250.0
4
33.3 50.0
0000_001
66.7
100.0
2
133.3 200.0
3
200.0 300.0
4
33.3 50.0
0000_010
60.0
120.0
2.5
150.0 300.0
3
180.0 360.0
6
25.0 50.0
0000_011
71.4
120.0
2.5
178.6 300.0
3.5
250.0 420.0
6
29.8 50.0
0000_100
62.5
120.0
2.5
156.3 300.0
4
250.0 480.0
6
26.0 50.0
Table 16. Clock Congurations for PCI Host Mode (PCI_MODCK=0)1,2 (Continued)
Mode3
Bus Clock4
(MHz)
CPM
Multiplication
Factor5
CPM Clock
(MHz)
CPU
Multiplication
Factor6
CPU Clock
(MHz)
PCI
Division
Factor
PCI Clock
(MHz)
MODCK_H-
MODCK[1-3]
low
high
low
high
low
high
low high
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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