9-2
MPC8260 PowerQUICC II UserÕs Manual
MOTOROLA
Part III. The Hardware Interface
9.2 Clock ConÞguration
To conÞgure the main PLL multiplication factor and the core, CPM, and 60x bus
frequencies, the MODCK[1Ð3] pins are sampled while HRESET is asserted. Table 9-1
shows the eight basic conÞguration modes. Another 49 modes are available by using the
conÞguration pin (RSTCONF) and driving four pins on the data bus.
Table
9-2 describes all possible clock conÞgurations when using the hard reset
conÞguration sequence. Note that clock conÞguration changes only after POR is asserted.
Note also that basic modes are bolded in this table.
Table 9-1. Clock Default Modes
MODCK[1Ð3]
Input Clock
Frequency
CPM Multiplication
Factor
CPM
Frequency
Core Multiplication
Factor
Core
Frequency
000
33 MHz
3
100 MHz
4
133 MHz
001
33 MHz
3
100 MHz
5
166 MHz
010
33 MHz
4
133 MHz
4
133 MHz
011
33 MHz
4
133 MHz
5
166 MHz
100
66 MHz
2
133 MHz
2.5
166 MHz
101
66 MHz
2
133 MHz
3
200 MHz
110
66 MHz
2.5
166 MHz
2.5
166 MHz
111
66 MHz
2.5
166 MHz
3
200 MHz
Table 9-2. Clock Configuration Modes
MODCK_HÐMODCK[1Ð3]
Input Clock
Frequency
CPM Multiplication
Factor
CPM
Frequency
Core Multiplication
Factor
Core
Frequency
0001_000
33 MHz
2
66 MHz
4
133 MHz
0001_001
33 MHz
2
66 MHz
5
166 MHz
0001_010
33 MHz
2
66 MHz
6
200 MHz
0001_011
33 MHz
2
66 MHz
7
233 MHz
0001_100
33 MHz
2
66 MHz
8
266 MHz
0001_101
33 MHz
3
100 MHz
4
133 MHz
0001_110
33 MHz
3
100 MHz
5
166 MHz
0001_111
33 MHz
3
100 MHz
6
200 MHz
0010_000
33 MHz
3
100 MHz
7
233 MHz
0010_001
33 MHz
3
100 MHz
8
266 MHz
0010_010
33 MHz
4
133 MHz
4
133 MHz
Summary of Contents for MPC8260 PowerQUICC II
Page 1: ...MPC8260UM D 4 1999 Rev 0 MPC8260 PowerQUICC II UserÕs Manual ª ª ...
Page 66: ...lxvi MPC8260 PowerQUICC II UserÕs Manual MOTOROLA ...
Page 88: ...1 18 MPC8260 PowerQUICC II UserÕs Manual MOTOROLA Part I Overview ...
Page 120: ...2 32 MPC8260 PowerQUICC II UserÕs Manual MOTOROLA Part I Overview ...
Page 138: ...Part II iv MPC8260 PowerQUICC II UserÕs Manual MOTOROLA Part II Configuration and Reset ...
Page 184: ...4 46 MPC8260 PowerQUICC II UserÕs Manual MOTOROLA Part II ConÞguration and Reset ...
Page 202: ...Part III vi MPC8260 PowerQUICC II UserÕs Manual MOTOROLA Part III The Hardware Interface ...
Page 266: ...8 34 MPC8260 PowerQUICC II UserÕs Manual MOTOROLA Part III The Hardware Interface ...
Page 382: ...10 106 MPC8260 PowerQUICC II UserÕs Manual MOTOROLA Part III The Hardware Interface ...
Page 392: ...11 10 MPC8260 PowerQUICC II UserÕs Manual MOTOROLA Part III The Hardware Interface ...
Page 430: ...Part IV viii MOTOROLA Part IV Communications Processor Module ...
Page 490: ...14 36 MPC8260 PowerQUICC II UserÕs Manual MOTOROLA Part IV Communications Processor Module ...
Page 524: ...17 10 MPC8260 PowerQUICC II UserÕs Manual MOTOROLA Part IV Communications Processor Module ...
Page 556: ...18 32 MPC8260 PowerQUICC II UserÕs Manual MOTOROLA Part IV Communications Processor Module ...
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Page 920: ...31 18 MPC8260 PowerQUICC II UserÕs Manual MOTOROLA Part IV Communications Processor Module ...
Page 980: ...A 4 MPC8260 PowerQUICC II UserÕs Manual MOTOROLA Appendixes ...
Page 1002: ...Index 22 MPC8260 PowerQUICC II UserÕs Manual MOTOROLA INDEX ...
Page 1006: ......