MPC8250ACVVMHBC Просмотр технического описания (PDF) - Freescale Semiconductor

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MPC8250ACVVMHBC

MPC8250 Hardware Specifications

Freescale Semiconductor 

Clock Configuration Modes

Table 13. Clock Default Configurations

MODCK[1–3]

Input Clock

Frequency

CPM Multiplication CPM

Factor

Frequency

100

66 MHz

101

66 MHz

2

133 MHz

2

133 MHz

110

66 MHz

111

66 MHz

2.5

166 MHz

2.5

166 MHz

Core Multiplication

Factor

2.5

3

2.5

3

Core

Frequency

166 MHz

200 MHz

166 MHz

200 MHz

Table 14 describes all possible clock configurations when using the hard reset configuration sequence.

Note also that basic modes are shown in boldface type. The frequencies listed are for the purpose of

illustration only. Users must select a mode and input bus frequency so that the resulting configuration does

not exceed the frequency rating of the user’s device.

Table 14. Clock Configuration Modes 1

MODCK_H–MODCK[1–3]

Input Clock

Frequency2,3

CPM Multiplication

Factor2

CPM Core Multiplication

Frequency2

Factor2

Core

Frequency2

0001_000

0001_001

0001_010

0001_011

0001_100

33 MHz

33 MHz

33 MHz

33 MHz

33 MHz

2

66 MHz

4

133 MHz

2

66 MHz

5

166 MHz

2

66 MHz

6

200 MHz

2

66 MHz

7

233 MHz

2

66 MHz

8

266 MHz

0001_101

0001_110

0001_111

0010_000

0010_001

33 MHz

33 MHz

33 MHz

33 MHz

33 MHz

3

100 MHz

4

133 MHz

3

100 MHz

5

166 MHz

3

100 MHz

6

200 MHz

3

100 MHz

7

233 MHz

3

100 MHz

8

266 MHz

0010_010

0010_011

0010_100

0010_101

0010_110

33 MHz

33 MHz

33 MHz

33 MHz

33 MHz

4

133 MHz

4

133 MHz

4

133 MHz

5

166 MHz

4

133 MHz

6

200 MHz

4

133 MHz

7

233 MHz

4

133 MHz

8

266 MHz

0010_111

0011_000

0011_001

0011_010

0011_011

33 MHz

33 MHz

33 MHz

33 MHz

33 MHz

5

166 MHz

4

133 MHz

5

166 MHz

5

166 MHz

5

166 MHz

6

200 MHz

5

166 MHz

7

233 MHz

5

166 MHz

8

266 MHz

MPC8250 Hardware Specifications, Rev. 2

Freescale Semiconductor

21

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