MPC8248 Freescale Semiconductor, Inc, MPC8248 Datasheet - Page 26

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

Clock Configuration Modes
26
MODCK[1-3]
MODCK_H-
0010_011
0010_100
0010_101
0010_110
0011_000
0011_001
0011_010
0011_011
0100_000
0100_001
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
Mode
Table 16. Clock Configurations for PCI Host Mode (PCI_MODCK=0)
3
Low
50.0
75.0 100.0
75.0 100.0
75.0 100.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
60.0
50.0
50.0
50.0
50.0
83.3 111.1
83.3 111.1
83.3 111.1
60.0
60.0
60.0
60.0
Bus Clock
(MHz)
MPC8272 PowerQUICC II™ Family Hardware Specifications, Rev. 1.5
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
80.0
80.0
80.0
80.0
Multiplication
Factor
CPM
2.5
2.5
2.5
2.5
4
4
4
4
5
5
5
5
6
6
6
2
2
2
2
2
3
3
3
4
200.0 266.6
300.0 400.0
300.0 400.0
300.0 400.0
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
120.0 133.3
100.0 133.3
100.0 133.3
100.0 133.3
100.0 133.3
250.0 333.3
250.0 333.3
250.0 333.3
150.0 200.0
150.0 200.0
150.0 200.0
150.0 200.0
CPM Clock
Low
(MHz)
High
Reserved
Multiplication
Factor
CPU
5.5
2.5
3.5
4.5
3.5
4.5
2.5
3.5
8
5
6
5
6
7
8
6
7
8
3
4
4
3
4
5
400.0 533.3
375.0 500.0
412.5 549.9
450.0 599.9
250.0 333.3
300.0 400.0
350.0 466.6
400.0 533.3
300.0 400.0
350.0 466.6
400.0 533.3
150.0 166.7
150.0 200.0
175.0 233.3
200.0 266.6
225.0 300.0
291.7 388.9
333.3 444.4
375.0 500.0
150.0 200.0
180.0 240.0
210.0 280.0
240.0 320.0
CPU Clock
Low
(MHz)
High
1, 2
Division
(continued)
Factor
PCI
Freescale Semiconductor
4
6
6
6
5
5
5
5
6
6
6
2
2
2
2
2
5
5
5
3
3
3
3
Low
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
50.0
60.0
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