参数资料
型号: MC8641DVU1250KB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: MICROPROCESSOR, CBGA1023
封装: 33 X 33 MM, ROHS COMPLIANT, CERAMIC, BGA-1023
文件页数: 14/140页
文件大小: 1484K
代理商: MC8641DVU1250KB
MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 0
110
Freescale Semiconductor
Clocking
18.1
Clock Ranges
Table 64 provides the clocking specifications for the processor cores and Table 65 provides the clocking
specifications for the memory bus. Table 66 provides the clocking for the Platform/MPX bus and Table 67
provides the clocking for the Local bus.
Table 64. Processor Core Clocking Specifications
Characteristic
Maximum Processor Core Frequency
Unit
Notes
1000 MHz
1250MHz
1333MHz
1500 MHz
Min
Max
Min
Max
Min
Max
Min
Max
e600 core processor frequency
800
1000
800
1250
800
1333
800
1500
MHz
1, 2
Notes:
1. Caution: The MPX clock to SYSCLK ratio and e600 core to MPX clock ratio settings must be chosen such that the resulting
SYSCLK frequency, e600 (core) frequency, and MPX clock frequency do not exceed their respective maximum or minimum
for ratio settings.
2. The minimum e600 core frequency is based on the minimum platform clock frequency of 400 MHz.
Table 65. Memory Bus Clocking Specifications
Characteristic
Maximum Processor Core
Frequency
Unit
Notes
1000, 1250, 1333, 1500MHz
Min
Max
Memory bus clock frequency
200
300
MHz
1, 2
Notes:
1. Caution: The MPX clock to SYSCLK ratio and e600 core to MPX clock ratio settings must be
chosen such that the resulting SYSCLK frequency, e600 (core) frequency, and MPX clock
frequency do not exceed their respective maximum or minimum operating frequencies. Refer to
ratio settings.
2. The memory bus clock speed is half the DDR/DDR2 data rate, hence, half the MPX clock
frequency.
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