mpc8272ec Freescale Semiconductor, Inc, mpc8272ec Datasheet - Page 24

• Manufacturer Part Number: mpc8272ec
• Description: Powerquicc Ii
• Manufacturer: Freescale Semiconductor, Inc

Clock Configuration Modes
Clock Configuration Modes
24
MODCK[1-3]
MODCK_H-
0100_010
0100_011
0101_000
0101_001
0101_010
0101_011
0101_100
0101_101
0101_110
0101_111
0110_000
0110_001
0110_010
0110_011
0110_100
0110_101
0110_110
0111_000
0111_001
0111_010
0111_011
0111_100
1000_000
1000_001
1000_010
1000_011
Mode
Table 15. Clock Configurations for PCI Host Mode (PCI_MODCK=0)
3
Low
50.0
50.0
50.0
50.0
62.5
55.6
83.3 111.1
83.3 111.1
83.3 111.1
60.0
60.0
71.4
62.5
60.0
60.0
60.0
50.0
62.5
55.6
66.7
71.4
66.7
Bus Clock
(MHz)
MPC8272 PowerQUICC II™ Family Hardware Specifications
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
High
66.7
66.7
66.7
66.7
66.7
66.7
80.0
80.0
80.0
80.0
80.0
80.0
80.0
66.7
66.7
66.7
88.9
88.9
88.9
Freescale Semiconductor, Inc.
Multiplication
For More Information On This Product,
Factor
CPM
2.5
2.5
2.5
2.5
2.5
2.5
2.5
6
6
2
2
2
2
3
3
3
3
3
3
3
3
3
PCI host mode (PCI_MODCK=1) only (refer to Table 16)
PCI host mode (PCI_MODCK=1) only (refer to Table 16)
4
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300.0 400.0
300.0 400.0
100.0 133.3
100.0 133.3
125.0 133.3
111.1 133.3
250.0 333.3
250.0 333.3
250.0 333.3
150.0 200.0
150.0 200.0
178.6 200.0
156.3 200.0
150.0 200.0
150.0 200.0
150.0 200.0
150.0 200.0
187.5 200.0
166.7 200.0
200.0 266.6
214.3 266.6
200.0 266.6
CPM Clock
Low
(MHz)
High
Reserved
Reserved
Multiplication
Factor
CPU
2.5
4.5
3.5
4.5
2.5
3.5
4.5
4.5
3.5
7
8
3
4
4
3
4
5
6
3
4
3
4
5
350.0 466.6
400.0 533.3
125.0 166.7
150.0 200.0
250.0 266.6
250.0 300.0
291.7 388.9
333.3 444.4
375.0 500.0
150.0 200.0
180.0 240.0
250.0 280.0
250.0 320.0
270.0 360.0
300.0 400.0
360.0 480.0
150.0 200.0
250.0 266.6
250.0 300.0
200.0 266.6
250.0 311.1
266.7 355.5
Low
CPU Clock
(MHz)
High
1, 2
Division
(continued)
Factor
PCI
6
6
2
2
2
2
5
5
5
3
3
3
3
3
3
3
3
3
3
4
4
4
MOTOROLA
Low
50.0
50.0
50.0
50.0
62.5
55.6
50.0
50.0
50.0
50.0
50.0
59.5
52.1
50.0
50.0
50.0
50.0
62.5
55.6
50.0
53.6
50.0
PCI Clock
(MHz)
High
66.7
66.7
66.7
66.7
66.7
66.7
66.7
66.7
66.7
66.7
66.7
66.7
66.7
66.7
66.7
66.7
66.7
66.7
66.7
66.7
66.7
66.7