System Design Information
Table 17. MPC7455 Microprocessor PLL Configuration Example for 1.0 GHz Parts
Example Bus-to-Core Frequency in MHz (VCO Frequency in MHz)
Bus (SYSCLK) Frequency
PLL_
CFG[0:4]
Bus-to-
Core
Core-to-
VCO
33.3
MHz
50
MHz
66.6
MHz
75
MHz
83
MHz
100
MHz
133
MHz
Multiplier Multiplier
01000
10000
10100
10110
10010
11010
01010
00100
00010
11000
01100
01111
01110
10101
10001
10011
00000
10111
2x
3x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
2x
4x
532
(1064)
5x
500
(1000)
667
(1333)
5.5x
6x
550
(1100)
733
(1466)
600
(1200)
800
(1600)
6.5x
7x
540
(1080)
650
(1300)
866
(1730)
525
(1050)
580
(1160)
700
(1400)
931
(1862)
7.5x
8x
500
(1000)
563
(1125)
623
(1245)
750
(1500)
1000
(2000)
533
(1066)
600
(1200)
664
(1328)
800
(1600)
8.5x
9x
566
(1132)
638
(1276)
706
(1412)
850
(1700)
600
(1200)
675
(1350)
747
(1494)
900
(1800)
9.5x
10x
10.5x
11x
11.5x
12x
633
(1266)
712
(1524)
789
(1578)
950
(1900)
500
(1000)
667
(1333)
750
(1500)
830
(1660)
1000
(2000)
525
(1050)
700
(1400)
938
(1876)
872
(1744)
550
(1100)
733
(1466)
825
(1650)
913
(1826)
575
(1150)
766
(532)
863
(1726)
955
(1910)
600
800
900
996
(1200)
(1600)
(1800)
(1992)
MPC7455 RISC Microprocessor Hardware Specifications, Rev. 4.1
46
Freescale Semiconductor
FREESCALE [ Freescale ]
