MPC8260A Motorola, MPC8260A Datasheet - Page 23

• Manufacturer Part Number: MPC8260A
• Description: Micro Processor
• Manufacturer: Motorola

Table 17 describes all possible clock configurations when using the MPC8265A or the MPC8266A’s
internal PCI bridge in host mode.
MOTOROLA
1
2
MODCK[1–3]
MODCK_H –
MODCK[1–3]
0011_000
0011_001
0011_010
0011_011
0100_000
0100_001
0100_010
0001_000
0001_001
0001_010
0001_011
0010_000
0010_001
0010_010
0010_011
Assumes MODCK_HI = 0000.
The frequency depends on the value of PCI_MODCK. If PCI_MODCK is high (logic ‘1’), the PCI frequency is
divided by 2 (33 instead of 66 MHz, etc.)
000
001
010
011
100
101
110
111
3
3
3
3
3
3
3
Table 16. Clock Default Configurations in PCI Host Mode (MODCK_HI = 0000)
1
Input Clock
Frequency
Input Clock
Frequency
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
(Bus)
66 MHz
66 MHz
66 MHz
66 MHz
66 MHz
66 MHz
66 MHz
66 MHz
(Bus)
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
Table 17. Clock Configuration Modes in PCI Host Mode
1
MPC826xA (HiP4) Family Hardware Specifications
Multiplication
Multiplication
Factor
Factor
CPM
CPM
2.5
2.5
2.5
3
3
3
3
4
4
4
4
5
5
5
5
6
6
6
2
2
3
3
3
Frequency
Frequency
133 MHz
133 MHz
166 MHz
166 MHz
166 MHz
200 MHz
200 MHz
200 MHz
100 MHz
100 MHz
100 MHz
100 MHz
133 MHz
133 MHz
133 MHz
133 MHz
166 MHz
166 MHz
166 MHz
166 MHz
200 MHz
200 MHz
200 MHz
CPM
CPM
Multiplication
Multiplication
Factor
Factor
Core
Core
2.5
3.5
3.5
3
3
4
3
4
5
6
7
8
5
6
7
8
5
6
7
8
5
6
7
Frequency
Frequency
166 MHz
200 MHz
200 MHz
233 MHz
266 MHz
200 MHz
233 MHz
266 MHz
166 MHz
200 MHz
233 MHz
266 MHz
166 MHz
200 MHz
233 MHz
266 MHz
166 MHz
200 MHz
233 MHz
266 MHz
166 MHz
200 MHz
233 MHz
Core
Core
Clock Configuration Modes
PCI Division
PCI Division
Factor
Factor
2/4
2/4
3/6
3/6
3/6
3/6
3/6
3/6
3/6
3/6
3/6
3/6
4/8
4/8
4/8
4/8
5
5
5
5
6
6
6
2
2
Frequency
Frequency
66/33 MHz
66/33 MHz
55/28 MHz
55/28 MHz
55/28 MHz
66/33 MHz
66/33 MHz
66/33 MHz
33/16 MHz
33/16 MHz
33/16 MHz
33/16 MHz
33/16 MHz
33/16 MHz
33/16 MHz
33/16 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
PCI
PCI
2
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