
MPC8548E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 5
122
Freescale Semiconductor
Clocking
19 Clocking
This section describes the PLL configuration of the MPC8548E. Note that the platform clock is identical
to the core complex bus (CCB) clock.
19.1
Clock Ranges
through
Table 76 provide the clocking specifications for the memory bus.
SD_IMP_CAL_TX
AB26
I
100
Ω (±1%)
to GND
—
SD_PLL_TPA
U26
O
AVDD_SRDS
24
Note: All note references in this table use the same numbers as those for
Table 67. The reader should refer to
Table 67 for the
meanings of these notes.
Table 71. Processor Core Clocking Specifications (MPC8548E and MPC8547E)
Characteristic
Maximum Processor Core Frequency
Unit
Notes
1000 MHz
1200 MHz
1333 MHz
Min
Max
Min
Max
Min
Max
e500 core processor frequency
800
1000
800
1200
800
1333
MHz
1, 2
Notes:
1. Caution: The CCB to SYSCLK ratio and e500 core to CCB ratio settings must be chosen such that the resulting SYSCLK
frequency, e500 (core) frequency, and CCB frequency do not exceed their respective maximum or minimum operating
2.)The minimum e500 core frequency is based on the minimum platform frequency of 333 MHz.
Table 72. Processor Core Clocking Specifications (MPC8545E)
Characteristic
Maximum Processor Core Frequency
Unit
Notes
800 MHz
1000 MHz
1200 MHz
Min
Max
Min
Max
Min
Max
e500 core processor frequency
800
1000
800
1200
MHz
1, 2
Notes:
1. Caution: The CCB to SYSCLK ratio and e500 core to CCB ratio settings must be chosen such that the resulting SYSCLK
frequency, e500 (core) frequency, and CCB frequency do not exceed their respective maximum or minimum operating
2.)The minimum e500 core frequency is based on the minimum platform frequency of 333 MHz.
Table 70. MPC8543E Pinout Listing (continued)
Signal
Package Pin Number
Pin Type
Power
Supply
Notes