参数资料
型号: MPC8572VTARNB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 1067 MHz, MICROPROCESSOR, PBGA1023
封装: 33 X 33 MM, LEAD FREE, PLASTIC, FCBGA-1023
文件页数: 26/138页
文件大小: 1502K
代理商: MPC8572VTARNB
MPC8572E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 2
Freescale Semiconductor
121
Clocking
19.4
DDR/DDRCLK PLL Ratio
The dual DDR memory controller complexes can be synchronous with, or asynchronous to, the CCB,
depending on configuration.
Table 79 describes the clock ratio between the DDR memory controller complexes and the DDR PLL
reference clock, DDRCLK, which is not the memory bus clock. The DDR memory controller complexes
clock frequency is equal to the DDR data rate.
When synchronous mode is selected, the memory buses are clocked at half the CCB clock rate. The default
mode of operation is for the DDR data rate for both DDR controllers to be equal to the CCB clock rate in
synchronous mode, or the resulting DDR PLL rate in asynchronous mode.
In asynchronous mode, the DDR PLL rate to DDRCLK ratios listed in Table 79 reflects the DDR data rate
to DDRCLK ratio, since the DDR PLL rate in asynchronous mode means the DDR data rate resulting from
DDR PLL output.
Please note that the DDR PLL reference clock input, DDRCLK, is only required in asynchronous mode.
MPC8572E does not support running one DDR controller in synchronous mode and the other in
asynchronous mode.
010
Reserved
110
3:1
011
3:2 (1.5:1)
111
7:2 (3.5:1)
Table 79. DDR Clock Ratio
Binary Value of
TSEC_1588_CLK_OUT,
TSEC_1588_PULSE_OUT1,
TSEC_1588_PULSE_OUT2 Signals
DDR:DDRCLK Ratio
000
3:1
001
4:1
010
6:1
011
8:1
100
10:1
101
12:1
110
14:1
111
Synchronous mode
Table 78. e500 Core1 to CCB Clock Ratio (continued)
Binary Value of
LWE[0]/LBS[0]/
LFWE, UART_SOUT[1],
READY_P1 Signals
e500 Core1:CCB Clock Ratio
Binary Value of
LWE[0]/LBS[0]/
LFWE, UART_SOUT[1],
READY_P1 Signals
e500 Core1:CCB Clock Ratio
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相关代理商/技术参数
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MPC8572VTATLD 功能描述:微处理器 - MPU 32-BIT CMOS 1.2GHz RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324
MPC8572VTATLE 功能描述:微处理器 - MPU 38H R211 NoE NoPb 1200 RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324
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