參數(shù)資料
型號(hào)： MPC8248CVRI
廠商： Motorola, Inc.
英文描述： MPC8272 PowerQUICC II Family Hardware Specifications
中文描述： MPC8272的PowerQUICC II系列硬件規(guī)格
文件頁(yè)數(shù)： 23/56頁(yè)
文件大小： 539K
代理商： MPC8248CVRI
23
MPC8272 PowerQUICC II Family Hardware Specifications
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA
Clock Configuration Modes
Table 15. Clock Configurations for PCI Host Mode (PCI_MODCK=0)
1, 2
Mode
3
Bus Clock
(MHz)
CPM
Multiplication
Factor
4
CPM Clock
(MHz)
CPU
Multiplication
Factor
5
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
50.0
66.7
2
100.0 133.3
2.5
125.0 166.7
2
50.0
66.7
0000_001
50.0
66.7
2
100.0 133.3
3
150.0 200.0
2
50.0
66.7
0000_010
60.0
80.0
2.5
150.0 200.0
3
180.0 240.0
3
50.0
66.7
0000_011
71.4
80.0
2.5
178.6 200.0
3.5
250.0 280.0
3
59.5
66.7
0000_100
62.5
80.0
2.5
156.3 200.0
4
250.0 320.0
3
52.1
66.7
0000_101
50.0
66.7
3
150.0 200.0
3
150.0 200.0
3
50.0
66.7
0000_110
PCI host mode (PCI_MODCK=1) only (refer to Table 16)
0000_111
62.5
66.7
3
187.5 200.0
4
250.0 266.6
3
62.5
66.7
Full Configuration Modes
0001_000
50.0
66.7
3
150.0 200.0
5
250.0 333.3
3
50.0
66.7
0001_001
50.0
66.7
3
150.0 200.0
6
300.0 400.0
3
50.0
66.7
0001_010
50.0
66.7
3
150.0 200.0
7
350.0 466.6
3
50.0
66.7
0001_011
50.0
66.7
3
150.0 200.0
8
400.0 533.3
3
50.0
66.7
0010_000
50.0
66.7
4
200.0 266.6
5
250.0 333.3
4
50.0
66.7
0010_001
50.0
66.7
4
200.0 266.6
6
300.0 400.0
4
50.0
66.7
0010_010
50.0
66.7
4
200.0 266.6
7
350.0 466.6
4
50.0
66.7
0010_011
50.0
66.7
4
200.0 266.6
8
400.0 533.3
4
50.0
66.7
0010_100
75.0
100.0
4
300.0 400.0
5
375.0 500.0
6
50.0
66.7
0010_101
75.0
100.0
4
300.0 400.0
5.5
412.5 549.9
6
50.0
66.7
0010_110
75.0
100.0
4
300.0 400.0
6
450.0 599.9
6
50.0
66.7
0011_000
50.0
66.7
5
250.0 333.3
5
250.0 333.3
5
50.0
66.7
0011_001
50.0
66.7
5
250.0 333.3
6
300.0 400.0
5
50.0
66.7
0011_010
50.0
66.7
5
250.0 333.3
7
350.0 466.6
5
50.0
66.7
0011_011
50.0
66.7
5
250.0 333.3
8
400.0 533.3
5
50.0
66.7
0100_000
Reserved
0100_001
50.0
66.7
6
300.0 400.0
6
300.0 400.0
6
50.0
66.7
F
Freescale Semiconductor, Inc.
n
.
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