Clocking
Table 70. MPC8543E Pinout Listing (continued)
Power
Supply
Signal
Package Pin Number
Pin Type
Notes
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.
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
Table 71 through Table 73 provide the clocking specifications for the processor cores and Table 74,
through Table 76 provide the clocking specifications for the memory bus.
Table 71. Processor Core Clocking Specifications (MPC8548E and MPC8547E)
Maximum Processor Core Frequency
Characteristic
1000 MHz
1200 MHz
1333 MHz
Unit
Notes
Min
800
Max
Min
800
Max
Min
800
Max
e500 core processor frequency
1000
1200
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
frequencies. Refer to Section 19.2, “CCB/SYSCLK PLL Ratio,” and Section 19.3, “e500 Core PLL Ratio,” for ratio settings.
2.)The minimum e500 core frequency is based on the minimum platform frequency of 333 MHz.
Table 72. Processor Core Clocking Specifications (MPC8545E)
Maximum Processor Core Frequency
Characteristic
800 MHz
1000 MHz
1200 MHz
Unit
Notes
Min
800
Max
Min
800
Max
Min
800
Max
e500 core processor frequency
800
1000
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
frequencies. Refer to Section 19.2, “CCB/SYSCLK PLL Ratio,” and Section 19.3, “e500 Core PLL Ratio,” for ratio settings.
2.)The minimum e500 core frequency is based on the minimum platform frequency of 333 MHz.
MPC8548E PowerQUICC™ III Integrated Processor Hardware Specifications, Rev. 6
Freescale Semiconductor
123
FREESCALE [ Freescale ]
