MPC8248 Freescale Semiconductor, Inc, MPC8248 Datasheet - Page 40

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

Clock Configuration Modes
40
MODCK[1-3]
MODCK_H-
1011_011
1011_100
1011_101
1011_110
1011_111
1100_101
1100_110
1100_111
1101_000
1101_001
1101_010
1101_011
1101_100
1110_000
1110_001
1110_010
1110_011
1110_100
1110_101
1110_110
1110_111
1100_000
1100_001
1100_010
Mode
Table 19. Clock Configurations for PCI Agent Mode (PCI_MODCK=1)
3
Low
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
25.0
28.6
25.0
25.0
25.0
25.0
25.0
PCI Clock
(MHz)
MPC8272 PowerQUICC II™ Family Hardware Specifications, Rev. 1.5
High
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
Multiplication
Factor
CPM
8
8
8
8
8
6
6
6
6
6
6
6
6
5
5
5
5
5
5
5
5
4
200.0 400.0
200.0 400.0
200.0 400.0
200.0 400.0
200.0 400.0
150.0 300.0
150.0 300.0
150.0 300.0
150.0 300.0
150.0 300.0
150.0 300.0
150.0 300.0
150.0 300.0
125.0 250.0
125.0 250.0
142.9 250.0
125.0 250.0
125.0 250.0
125.0 250.0
125.0 250.0
125.0 250.0
CPM Clock
Low
(MHz)
High
Reserved
Reserved
Reserved
Multiplication
Factor
CPU
3.5
2.5
3.5
4.5
5.5
3.5
4.5
2.5
3.5
4.5
5.5
4
3
4
5
4
5
3
4
4
5
5
280.0 560.0
320.0 640.0
250.0 500.0
300.0 600.0
350.0 700.0
200.0 400.0
225.0 450.0
250.0 500.0
275.0 550.0
210.0 420.0
240.0 480.0
270.0 540.0
300.0 600.0
156.3 312.5
187.5 375.0
250.0 437.5
250.0 500.0
166.7 333.3
187.5 375.0
208.3 416.7
229.2 458.3
CPU Clock
Low
(MHz)
High
1, 2
Division
Factor
(continued)
Bus
2.5
2.5
2.5
2.5
2.5
2.5
Freescale Semiconductor
2
2
2
3
3
3
3
2
2
2
2
3
3
3
3
100.0 200.0
100.0 200.0
100.0 200.0
Low
80.0 160.0
80.0 160.0
50.0 100.0
50.0 100.0
50.0 100.0
50.0 100.0
60.0 120.0
60.0 120.0
60.0 120.0
60.0 120.0
62.5 125.0
62.5 125.0
71.4 125.0
62.5 125.0
41.7
41.7
41.7
41.7
Bus Clock
(MHz)
High
83.3
83.3
83.3
83.3