參數(shù)資料
型號(hào): MPC8572ECLPXAULD
廠商: Freescale Semiconductor
文件頁(yè)數(shù): 21/138頁(yè)
文件大?。?/td> 0K
描述: MPU POWERQUICC III 1023FCPBGA
標(biāo)準(zhǔn)包裝: 1
系列: MPC85xx
處理器類型: 32-位 MPC85xx PowerQUICC III
速度: 1.333GHz
電壓: 1.1V
安裝類型: 表面貼裝
封裝/外殼: 1023-BBGA,F(xiàn)CBGA
供應(yīng)商設(shè)備封裝: 1023-FCPBGA(33x33)
包裝: 托盤
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MPC8572E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 5
Freescale Semiconductor
117
Clocking
19 Clocking
This section describes the PLL configuration of the MPC8572E. Note that the platform clock is identical
to the core complex bus (CCB) clock.
19.1
Clock Ranges
Table 77 provides the clocking specifications for both processor cores.
The DDR memory controller can run in either synchronous or asynchronous mode. When running in
synchronous mode, the memory bus is clocked relative to the platform clock frequency. When running in
asynchronous mode, the memory bus is clocked with its own dedicated PLL with clock provided on
DDRCLK input pin. Table 78 provides the clocking specifications for the memory bus.
Table 77. MPC8572E Processor Core Clocking Specifications
Characteristic
Maximum Processor Core Frequency
Unit
Notes
1067 MHz
1200 MHz
1333 MHz
1500 MHz
Min
Max
Min
Max
Min
Max
Min
Max
e500 core processor frequency
800
1067
800
1200
800
1333
800
1500
MHz
1, 2
CCB frequency
400
533
400
533
400
533
400
600
MHz
DDR Data Rate
400
667
400
667
400
667
400
800
MHz
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
“DDR/DDRCLK PLL Ratio,for ratio settings.
2. The processor core frequency speed bins listed also reflect the maximum platform (CCB) and DDR data rate frequency
supported by production test. Running CCB and/or DDR data rate higher than the limit shown above, although logically
possible via valid clock ratio setting in some condition, is not supported.
Table 78. Memory Bus Clocking Specifications
Characteristic
Min
Max
Unit
Notes
Memory bus clock frequency
200
400
MHz
1, 2, 3, 4
Notes:
1. Caution: The CCB clock to SYSCLK ratio and e500 core to CCB clock 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
2. The Memory bus clock refers to the MPC8572E memory controllers’ Dn_MCK[0:5] and Dn_MCK[0:5] output clocks, running
at half of the DDR data rate.
3. In synchronous mode, the memory bus clock speed is half the platform clock frequency. In other words, the DDR data rate is
the same as the platform (CCB) frequency. If the desired DDR data rate is higher than the platform (CCB) frequency,
asynchronous mode must be used.
4. In asynchronous mode, the memory bus clock speed is dictated by its own PLL. Refer to Section 19.4, “DDR/DDRCLK PLL
Ratio.The memory bus clock speed must be less than or equal to the CCB clock rate which in turn must be less than the
DDR data rate.
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