参数资料
型号: MPC8555CPXAJEX
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 533 MHz, RISC PROCESSOR, PBGA783
封装: 29 X 29 MM, 3.75 MM HEIGHT, 1 MM PITCH, FLIP CHIP, PLASTIC, BGA-783
文件页数: 62/88页
文件大小: 1244K
代理商: MPC8555CPXAJEX
MPC8555E PowerQUICC III Integrated Communications Processor Hardware Specifications, Rev. 4
Freescale Semiconductor
65
Clocking
15 Clocking
This section describes the PLL configuration of the MPC8555E. Note that the platform clock is identical
to the CCB clock.
15.1
Clock Ranges
Table 44 provides the clocking specifications for the processor core and Table 45 provides the clocking
specifications for the memory bus.
Table 44. Processor Core Clocking Specifications
Characteristic
Maximum Processor Core Frequency
Unit Notes
533 MHz
600 MHz
667 MHz
833 MHz
1000 MHz
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
e500 core
processor
frequency
400
533
400
600
400
667
400
833
400
1000
MHz 1, 2, 3
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 15.2, “Platform/System PLL Ratio,” and Section 15.3, “e500 Core PLL Ratio,” for ratio settings.
2.)The minimum e500 core frequency is based on the minimum platform frequency of 200 MHz.
3. 1000 MHz frequency supports only a 1.3 V core.
Table 45. Memory Bus Clocking Specifications
Characteristic
Maximum Processor Core
Frequency
Unit
Notes
533, 600, 667, 883, 1000 MHz
Min
Max
Memory bus frequency
100
166
MHz
1, 2, 3
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 15.2, “Platform/System PLL
Ratio,” and Section 15.3, “e500 Core PLL Ratio,” for ratio settings.
2. The memory bus speed is half of the DDR data rate, hence, half of the platform clock frequency.
3. 1000 MHz frequency supports only a 1.3 V core.
相关PDF资料
PDF描述
MPC8555CVTAJFX 32-BIT, 533 MHz, RISC PROCESSOR, PBGA783
MPC8555PXALDX 32-BIT, 667 MHz, RISC PROCESSOR, PBGA783
MPC8555EPXALFX 32-BIT, 667 MHz, RISC PROCESSOR, PBGA783
MPC8555CVTAKDX 32-BIT, 600 MHz, RISC PROCESSOR, PBGA783
MPC8555PXAQFX 32-BIT, 1000 MHz, RISC PROCESSOR, PBGA783
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