MPC8248 Freescale Semiconductor, Inc, MPC8248 Datasheet - Page 28

• Manufacturer Part Number: MPC8248
• Description: Mpc8248 Powerquicc Ii Integrated Communications Processor
• Manufacturer: Freescale Semiconductor, Inc

Clock Configuration Modes
28
MODCK[1-3]
MODCK_H-
1010_010
1010_011
1010_100
1010_101
1010_110
1010_111
1011_000
1011_001
1011_010
1011_011
1011_100
1011_101
1101_000
1101_001
1101_010
1101_011
1101_100
1101_101
1101_110
1110_000
1110_001
1110_010
1110_011
1110_100
Mode
Table 16. Clock Configurations for PCI Host Mode (PCI_MODCK=0)
3
100.0 133.3
100.0 133.3
100.0 133.3
100.0 133.3
100.0 133.3
100.0 133.3
100.0 133.3
100.0 133.3
125.0 166.7
125.0 166.7
100.0 133.3
100.0 133.3
100.0 133.3
100.0 133.3
100.0 133.3
Low
75.0 100.0
75.0 100.0
75.0 100.0
80.0 106.7
80.0 106.7
80.0 106.7
80.0 106.7
80.0 106.7
Bus Clock
(MHz)
MPC8272 PowerQUICC II™ Family Hardware Specifications, Rev. 1.5
High
Multiplication
Factor
CPM
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2
2
2
2
2
2
2
2
3
3
3
3
3
4
150.0 200.0
150.0 200.0
150.0 200.0
200.0 266.6
200.0 266.6
200.0 266.6
200.0 266.6
200.0 266.6
200.0 266.6
200.0 266.6
200.0 266.6
250.0 333.3
250.0 333.3
250.0 333.3
250.0 333.3
250.0 333.3
250.0 333.3
250.0 333.3
300.0 400.0
300.0 400.0
300.0 400.0
300.0 400.0
300.0 400.0
CPM Clock
Low
(MHz)
High
Reserved
Multiplication
Factor
CPU
3.5
2.5
3.5
2.5
3.5
4.5
3.5
4.5
3.5
4.5
5.5
3
4
3
3
4
3
4
5
3
4
4
5
5
225.0 300.0
262.5 350.0
300.0 400.0
250.0 333.3
300.0 400.0
350.0 466.6
200.0 266.6
240.0 320.0
280.0 373.3
320.0 426.6
360.0 480.0
300.0 400.0
350.0 466.6
400.0 533.3
450.0 599.9
500.0 666.6
375.0 500.0
500.0 666.6
350.0 466.6
400.0 533.3
450.0 599.9
500.0 666.6
550.0 733.3
CPU Clock
Low
(MHz)
High
1, 2
Division
(continued)
Factor
PCI
Freescale Semiconductor
3
3
3
4
4
4
4
4
4
4
4
5
5
5
5
5
5
5
6
6
6
6
6
Low
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
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
66.7