XPC8260ZUIFBC Datasheet, PDF (27/50 Pages) Freescale Semiconductor, Inc – PowerQUICC II Integrated Communications Processor Hardware Specifications

Clock Configuration Modes
3.2.1 PCI Host Mode
The frequencies listed in Table 16 and Table 17 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.
I
Table 16. Clock Default Configurations in PCI Host Mode (MODCK_HI = 0000)
MODCK[1–3]¹
Input Clock
Frequency
(Bus)
CPM
Multiplication
Factor
CPM
Frequency
Core
Multiplication
Factor
Core
Frequency
PCI Division
Factor²
PCI
Frequency²
000
66 MHz
2
133 MHz
2.5
166 MHz
2/4
66/33 MHz
001
66 MHz
2
133 MHz
3
200 MHz
2/4
66/33 MHz
010
66 MHz
2.5
166 MHz
3
200 MHz
3/6
55/28 MHz
011
66 MHz
2.5
166 MHz
3.5
233 MHz
3/6
55/28 MHz
100
66 MHz
2.5
166 MHz
4
266 MHz
3/6
55/28 MHz
101
66 MHz
3
200 MHz
3
200 MHz
3/6
66/33 MHz
110
66 MHz
3
200 MHz
3.5
233 MHz
3/6
66/33 MHz
111
66 MHz
3
200 MHz
4
266 MHz
3/6
66/33 MHz
1 _{Assumes MODCK_HI = 0000.}
2 _{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.) Refer to Table 15.
Table 17 describes all possible clock configurations when using the MPC8265’s or the MPC8266’s
internal PCI bridge in host mode.
Table 17. Clock Configuration Modes in PCI Host Mode
MODCK_H –
MODCK[1–3]
Input Clock
Frequency¹
(Bus)
CPM
Multiplication
Factor
CPM
Frequency
Core
Multiplication
Factor
Core
Frequency
PCI Division
Factor²
PCI
Frequency²
0001_000
0001_001
0001_010
0001_011
33 MHz
33 MHz
33 MHz
33 MHz
3
100 MHz
5
166 MHz
3/6
33/16 MHz
3
100 MHz
6
200 MHz
3/6
33/16 MHz
3
100 MHz
7
233 MHz
3/6
33/16 MHz
3
100 MHz
8
266 MHz
3/6
33/16 MHz
0010_000
0010_001
0010_010
0010_011
33 MHz
33 MHz
33 MHz
33 MHz
4
133 MHz
5
166 MHz
4/8
33/16 MHz
4
133 MHz
6
200 MHz
4/8
33/16 MHz
4
133 MHz
7
233 MHz
4/8
33/16 MHz
4
133 MHz
8
266 MHz
4/8
33/16 MHz
0011_000³
0011_001³
0011_010³
33 MHz
33 MHz
33 MHz
5
166 MHz
5
166 MHz
5
5
166 MHz
6
200 MHz
5
5
166 MHz
7
233 MHz
5
33 MHz
33 MHz
33 MHz
MPC8260A PowerQUICC™ II Integrated Communications Processor Hardware Specifications, Rev. 2.0
Freescale Semiconductor
27