PC8260 datasheet(48/53 Pages) ATMEL

48 / 53 page

PC8260 PowerQUICC II

2131B–HIREL–02/03

Notes:

1. This table describes all possible clock configurations when using the hard reset configuration sequence. Note that clock

configuration changes only after POR is asserted.

2. Because of speed dependencies, not all of the possible configurations in this table may be applicable.

3. The 66 MHz configurations are required for input clock frequencies higher than 50 MHz. 33 MHz configurations are required

for input clock frequencies below 50 MHz.

4. The user should choose the input clock frequency, and the multiplication factor of the CPM so that the frequency of the CPM

will be between 50 MHz and 166 MHz for a 2V part, and between 66 MHz and 233 MHz for a 2.5V part.

0110_101

2.5

166

200

0110_110

2.5

166

3.5

233

0110_111

2.5

166

266

0111_000

2.5

166

4.5

300

0111_001

200

133

0111_010

200

2.5

166

0110_101

2.5

166

200

0110_110

2.5

166

3.5

233

0110_111

2.5

166

266

0111_000

2.5

166

4.5

300

0111_001

200

133

0111_010

200

2.5

166

0111_011

200

0111_100

200

3.5

233

0111_101

200

266

0111_110

200

4.5

300

0111_111

3.5

233

133

1000_000

3.5

233

2.5

166

1000_001

3.5

233

200

1000_010

3.5

233

3.5

233

1000_011

3.5

233

266

1000_100

3.5

233

4.5

300

Table 16. Clock Configuration Modes (Continued)

MODCK_H–

MODCK[1–3]

Input Clock

Frequency

(MHz)

CPM Multiplication

Factor

CPM

Frequency

(MHz)

Core Multiplication Factor

Core

Frequency

(MHz)

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