參數(shù)資料
型號： PC8265A
英文描述： PC8265A [Updated 9/03. 59 Pages]
中文描述： PC8265A [更新9 / 03。 59頁]
文件頁數(shù)： 52/59頁
文件大?。?/td> 455K
代理商： PC8265A
52
PC8265A PowerQUICC II
5336A–HIREL–08/03
.
Notes:
1. The user should verify that all buses and functions run frequencies that are within the supported ranges
2. Assumes MODCK_HI = 0000
3. 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
4. Core frequency = (60x bus frequency)(core multiplication factor)
5. Bus frequency = CPM frequency/bus division factor
Table 19 describes all possible clock configurations when using the PC8265A or the PC8266A’s internal PCI bridge in
agent mode.
Table 18.
Clock Default Configurations in PCI Agent Mode (MODCK_HI = 0000)
(1)
MODCK[1–3]
(2)
Input Clock
Frequency
(PCI)
(3)
CPM
Multiplication
Factor
(3)
CPM
Frequency
Core
Multiplication
Factor
Core
(4)
Frequency
Bus
Division
Factor
60x Bus
(5)
Frequency
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 19.
Clock Configuration Modes in PCI Agent Mode
(1)
MODCK_H –
MODCK[1–3]
Input Clock
Frequency
(PCI)
(2)(3)
CPM
Multiplication
Factor
(2)
CPM
Frequency
Core
Multiplication
Factor
Core
(4)
Frequency
Bus
Division
Factor
60x Bus
(5)
Frequency
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
0011_010
66/33 MHz
2/4
133 MHz
3.5
154 MHz
3
44 MHz
0011_011
66/33 MHz
2/4
133 MHz
4
176 MHz
3
44 MHz
0011_100
66/33 MHz
2/4
133 MHz
4.5
198 MHz
3
44 MHz
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