Datasheet

MPC8245 Integrated Processor Hardware Specifications, Rev. 10
Freescale Semiconductor 39
PLL Configurations
6 PLL Configurations
The internal PLLs are configured by the PLL_CFG[0:4] signals. For a given PCI_SYNC_IN (PCI bus)
frequency, the PLL configuration signals set both the peripheral logic/memory bus PLL (VCO) frequency
of operation for the PCI-to-memory frequency multiplying and the MPC603e CPU PLL (VCO) frequency
of operation for memory-to-CPU frequency multiplying. The PLL configurations are shown in Table 17
and Table 18.
Table 17. PLL Configurations (266- and 300-MHz Parts)
Ref. No.
PLL_CFG
[0:4]
10,13
266-MHz Part
9
300-MHz Part
9
Multipliers
PCI Clock
Input
(PCI_
SYNC_IN)
Range
1
(MHz)
Periph
Logic/
MemBus
Clock
Range
(MHz)
CPU
Clock
Range
(MHz)
PCI Clock
Input
(PCI_
SYNC_IN)
Range
1
(MHz)
Periph
Logic/
MemBus
Clock
Range
(MHz)
CPU
Clock
Range
(MHz)
PCI-to-
Mem
(Mem
VCO)
Mem-to-
CPU
(CPU
VCO)
0 00000
12
25–35
5
75–105 188–263 25–40
5,7
75–120 188–300 3 (2) 2.5 (2)
1 00001
12
25–29
5
75–88 225–264 25–33
5
75–99 225–297 3 (2) 3 (2)
2 00010
11
50
18
–59
5,7
50–59 225–266 50
18
–66
1
50–66 225–297 1 (4) 4.5 (2)
300011
11,14
50
17
–66
1
50–66 100–133 50
17
–66
1
50–66 100–133 1 (Bypass) 2 (4)
4 00100
12
25–46
4
50–92 100–184 25–46
4
50–92 100–184 2 (4) 2 (4)
6 00110
15
Bypass Bypass Bypass
7
Rev B
00111
14
60
6
–66
1
60–66 180–198 60
6
–66
1
60–66 180–198 1 (Bypass) 3 (2)
7
Rev D
00111
14
Not available
8 01000
12
60
6
–66
1
60–66 180–198 60
6
–66
1
60–66 180–198 1 (4) 3 (2)
9 01001
12
45
6
–66
1
90–132 180–264 45
6
–66
1
90–132 180–264 2 (2) 2 (2)
A 01010
12
25–29
5
50–58 225–261 25–33
5
50–66 225–297 2 (4) 4.5 (2)
B 01011
12
45
3
–59
5
68–88 204–264 45
3
–66
1
68–99 204–297 1.5 (2) 3 (2)
C 01100
12
36
6
–46
4
72–92 180–230 36
6
–46
4
72–92 180–230 2 (4) 2.5 (2)
D 01101
12
45
3
–50
5
68–75 238–263 45
3
–57
5
68–85 238–298 1.5 (2) 3.5 (2)
E 01110
12
30
6
–44
5
60–88 180–264 30
6
–46
4
60–92 180–276 2 (4) 3 (2)
F 01111
12
25
5
75 263 25–28
5
75–85 263–298 3 (2) 3.5 (2)
10 10000
12
30
6
–44
2,5
90–132 180–264 30
6
–44
2
90–132 180–264 3 (2) 2 (2)
11 10001
12
25–26
5,7
100–106 250–266 25–29
2
100–116 250–290 4 (2) 2.5 (2)
12 10010
12
60
6
–66
1
90–99 180–198 60
6
–66
1
90–99 180–198 1.5 (2) 2 (2)