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參數(shù)資料
| 型號(hào)： | MPC8260ACZU |
| 廠商： | Motorola, Inc. |
| 英文描述： | MPC826xA (HiP4) Family Hardware Specifications |
| 中文描述： | MPC826xA（HiP4）家庭硬件規(guī)格 |
| 文件頁數(shù)： | 27/48頁 |
| 文件大?。?/td> | 315K |
| 代理商： | MPC8260ACZU |
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MOTOROLA
MPC826xA (HiP4) Family Hardware Specifications
27
Clock Configuration Modes
1.3.2.2
PCI Agent Mode
The frequencies listed in Table 17 and Table 18 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 18 describes all possible clock configurations when using the MPC8265 or the MPC8266’s internal
PCI bridge in agent mode.
Table 17. Clock Default Configurations in PCI Agent Mode (MODCK_HI = 0000)
MODCK[1–3]
1
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.) and the CPM multiplication factor is multiplied by 2. Refer to
Table 14.
3
Core frequency = (60x bus frequency)(core multiplication factor)
4
Bus frequency = CPM frequency / bus division factor
Input Clock
Frequency
(PCI)
2
CPM
Multiplication
Factor
2
CPM
Frequency
Core
Multiplication
Factor
Core
Frequency
3
Bus Division
Factor
60x Bus
Frequency
4
000
66/33 MHz
2/4
133 MHz
2.5
166 MHz
2
66 MHz
001
66/33 MHz
2/4
133 MHz
3
200 MHz
2
66 MHz
010
66/33 MHz
3/6
200 MHz
3
200 MHz
3
66 MHz
011
66/33 MHz
3/6
200 MHz
4
266 MHz
3
66 MHz
100
66/33 MHz
3/6
200 MHz
3
240 MHz
2.5
80 MHz
101
66/33 MHz
3/6
200 MHz
3.5
280 MHz
2.5
80 MHz
110
66/33 MHz
4/8
266 MHz
3.5
300 MHz
3
88 MHz
111
66/33 MHz
4/8
266 MHz
3
300 MHz
2.5
100 MHz
Table 18. Clock Configuration Modes in PCI Agent Mode
MODCK_H –
MODCK[1–3]
Input Clock
Frequency
(PCI)
1,2
CPM
Multiplication
Factor
1
CPM
Frequency
Core
Multiplication
Factor
Core
Frequency
3
Bus Division
Factor
60x Bus
Frequency
4
0001_001
66/33 MHz
2/4
133 MHz
5
166 MHz
4
33 MHz
0001_010
66/33 MHz
2/4
133 MHz
6
200 MHz
4
33 MHz
0001_011
66/33 MHz
2/4
133 MHz
7
233 MHz
4
33 MHz
0001_100
66/33 MHz
2/4
133 MHz
8
266 MHz
4
33 MHz
0010_001
50/25 MHz
3/6
150
MHz
3
180 MHz
2.5
60
MHz
0010_010
50/25 MHz
3/6
150
MHz
3.5
210 MHz
2.5
60
MHz
0010_011
50/25 MHz
3/6
150
MHz
4
240 MHz
2.5
60
MHz
0010_100
50/25 MHz
3/6
150
MHz
4.5
270 MHz
2.5
60
MHz
0011_000
66/33 MHz
2/4
133 MHz
2.5
110MHz
3
44 MHz
0011_001
66/33 MHz
2/4
133 MHz
3
132 MHz
3
44 MHz
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