MPC8248 Freescale Semiconductor, Inc, MPC8248 Datasheet - Page 38

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

Clock Configuration Modes
38
MODCK[1-3]
MODCK_H-
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
0101_110
0110_000
0110_001
0110_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
37.5
32.1
28.1
25.0
25.0
25.0
25.0
25.0
30.0
25.0
25.0
25.0
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
50.0
Multiplication
Factor
CPM
4
6
6
6
6
4
4
4
4
6
6
6
6
5
5
5
5
5
5
5
8
8
4
100.0 200.0
150.0 300.0
150.0 300.0
150.0 300.0
150.0 300.0
150.0 200.0
128.6 200.0
112.5 200.0
100.0 200.0
150.0 300.0
150.0 300.0
150.0 300.0
150.0 300.0
150.0 250.0
125.0 250.0
125.0 250.0
125.0 250.0
125.0 250.0
125.0 250.0
125.0 250.0
200.0 400.0
200.0 400.0
CPM Clock
Low
(MHz)
High
Reserved
Reserved
Reserved
Multiplication
Factor
CPU
3.5
4.5
3.5
4.5
3.5
4.5
2.5
3.5
4.5
5.5
3.5
8
3
4
3
4
3
4
3
4
5
3
5
200.0 400.0
180.0 360.0
210.0 420.0
240.0 480.0
270.0 540.0
150.0 200.0
150.0 233.3
150.0 266.7
150.0 300.0
150.0 300.0
175.0 350.0
200.0 400.0
225.0 450.0
150.0 250.0
150.0 300.0
175.0 350.0
200.0 400.0
225.0 450.0
250.0 500.0
275.0 550.0
200.0 400.0
233.3 466.7
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
3
3
3
3
3
3
3
3
3
3
Low
25.0
60.0 120.0
60.0 120.0
60.0 120.0
60.0 120.0
50.0
42.9
37.5
33.3
50.0 100.0
50.0 100.0
50.0 100.0
50.0 100.0
60.0 100.0
50.0 100.0
50.0 100.0
50.0 100.0
50.0 100.0
50.0 100.0
50.0 100.0
66.7 133.3
66.7 133.3
Bus Clock
(MHz)
High
50.0
66.7
66.7
66.7
66.7