MPC8248 Freescale Semiconductor, Inc, MPC8248 Datasheet - Page 34

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

Clock Configuration Modes
34
MODCK[1-3]
MODCK_H-
0000_111
0001_001
0001_010
0001_011
0001_100
0010_001
0010_010
0010_011
0010_100
0011_000
0011_001
0011_010
0011_011
0011_100
0100_000
0100_001
0100_010
0100_011
0100_100
0101_000
0101_001
0101_010
0101_011
0101_100
0101_101
Mode
Table 18. Clock Configurations for PCI Agent Mode (PCI_MODCK=0)
3
Low
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
50.0
50.0
50.0
50.0
50.0
50.0
PCI 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
66.7
66.7
66.7
66.7
66.7
66.7
Multiplication
Factor
CPM
4
2
2
2
2
3
3
3
3
3
3
3
3
5
5
5
5
5
5
4
Full Configuration Modes
200.0 266.6
120.0 133.3
100.0 133.3
100.0 133.3
100.0 133.3
150.0 200.0
150.0 200.0
150.0 200.0
150.0 200.0
150.0 200.0
150.0 200.0
150.0 200.0
150.0 200.0
250.0 333.3
250.0 333.3
250.0 333.3
250.0 333.3
250.0 333.3
250.0 333.3
CPM Clock
Low
(MHz)
High
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Multiplication
Factor
CPU
3.5
4.5
3.5
4.5
2.5
3.5
4.5
3
5
6
7
8
3
4
3
4
3
4
5
5
240.0 320.0
150.0 166.7
150.0 200.0
175.0 233.3
200.0 266.6
180.0 240.0
210.0 280.0
240.0 320.0
270.0 360.0
150.0 200.0
175.0 200.0
200.0 266.6
225.0 300.0
250.0 333.3
300.0 400.0
350.0 466.6
400.0 533.3
450.0 599.9
500.0 666.6
CPU Clock
Low
(MHz)
High
1, 2
Division
Factor
(continued)
Bus
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
Freescale Semiconductor
4
4
4
4
3
3
3
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
Low
80.0 106.7
30.0
25.0
25.0
25.0
60.0
60.0
60.0
60.0
50.0
50.0
50.0
50.0
Bus Clock
(MHz)
High
33.3
33.3
33.3
33.3
80.0
80.0
80.0
80.0
66.7
66.7
66.7
66.7