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参数资料
型号： MPC8545EVUAQGA
厂商： FREESCALE SEMICONDUCTOR INC
元件分类： 微控制器/微处理器
英文描述： 32-BIT, 1000 MHz, MICROPROCESSOR, CBGA783
封装： 29 X 29 MM, 1 MM PITCH, FLIP CHIP, LEAD FREE, CERAMIC, BGA-783
文件页数： 107/142页
文件大小： 1504K
代理商： MPC8545EVUAQGA
MPC8548E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 5
Freescale Semiconductor
67
High-Speed Serial Interfaces (HSSI)
Figure 46 shows the SerDes reference clock connection reference circuits for a single-ended clock driver.
It assumes the DC levels of the clock driver are compatible with the MPC8548E SerDes reference clock
input’s DC requirement.
Figure 46. Single-Ended Connection (Reference Only)
15.2.4
AC Requirements for SerDes Reference Clocks
The clock driver selected should provide a high quality reference clock with low phase noise and
cycle-to-cycle jitter. Phase noise less than 100 kHz can be tracked by the PLL and data recovery loops and
is less of a problem. Phase noise above 15 MHz is filtered by the PLL. The most problematic phase noise
occurs in the 1–15-MHz range. The source impedance of the clock driver should be 50
Ω to match the
transmission line and reduce reflections which are a source of noise to the system.
The detailed AC requirements of the SerDes reference clocks is defined by each interface protocol based
on application usage. Refer to the following sections for detailed information:
Section 16.2, “AC Requirements for PCI Express SerDes Clocks”
Section 17.2, “AC Requirements for Serial RapidIO SD_REF_CLK and SD_REF_CLK”
15.2.4.1
Spread Spectrum Clock
SD_REF_CLK/SD_REF_CLK are designed to work with a spread spectrum clock (+0% to –0.5%
spreading at 30–33 kHz rate is allowed), assuming both ends have same reference clock. For better results,
a source without significant unintended modulation should be used.
SD_REF_CLK
100
Ω Differential PWB Trace
Clock Driver
CLK_Out
Single-Ended CLK
Driver Chip
MPC8548E
33
Ω
Total 50
Ω. Assume clock driver’s
output impedance is about 16
Ω.
50
Ω
SerDes Refer.
CLK Receiver
50
Ω
50
Ω
相关PDF资料
PDF描述
MPC8547EVUAUJ 32-BIT, 1000 MHz, MICROPROCESSOR, CBGA783
MPC8545CPXAQGB 32-BIT, 1000 MHz, MICROPROCESSOR, PBGA783
MPC8547CVUAQGA 32-BIT, 1000 MHz, MICROPROCESSOR, CBGA783
MPC8547ECVUAQJA 32-BIT, 1000 MHz, MICROPROCESSOR, CBGA783
MPC8547ECVUATGB 32-BIT, 1200 MHz, MICROPROCESSOR, CBGA783
相关代理商/技术参数
参数描述
MPC8545EVUATG 功能描述:微处理器 - MPU PQ38 8548E PB-FREE 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
MPC8545HXANG 功能描述:微处理器 - MPU PQ38 8548 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
MPC8545HXAQG 功能描述:微处理器 - MPU PQ38 8548 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
MPC8545HXATG 功能描述:微处理器 - MPU PQ38 8548 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
MPC8545PXANGA 功能描述:微处理器 - MPU PQ3 8545 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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