参数资料
型号: MPC8536ECVTATHA
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 1250 MHz, MICROPROCESSOR, PBGA783
封装: 29 X 29 MM, 2.80 MM HEIGHT, 1 MM PITCH, LEAD FREE, PLASTIC, FCBGA-783
文件页数: 120/127页
文件大小: 1893K
代理商: MPC8536ECVTATHA
MPC8536E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 3
High-Speed Serial Interfaces
Freescale Semiconductor
92
peak. For example, the output differential peak-peak voltage can also be calculated as VTX-DIFFp-p
= 2*|VOD|.
6.
Common Mode Voltage, Vcm
The Common Mode Voltage is equal to one half of the sum of the voltages between each conductor of a balanced interchange
circuit and ground. In this example, for SerDes output, Vcm_out = VSDn_TX + VSDn_TX = (A + B)
/ 2, which is the arithmetic mean of the two complimentary output voltages within a differential
pair. In a system, the common mode voltage may often differ from one component’s output to the
other’s input. Sometimes, it may be even different between the receiver input and driver output
circuits within the same component. It is also referred as the DC offset in some occasion.
Figure 57. Differential Voltage Definitions for Transmitter or Receiver
To illustrate these definitions using real values, consider the case of a CML (Current Mode Logic) transmitter that has a common
mode voltage of 2.25 V and each of its outputs, TD and TD, has a swing that goes between 2.5V and 2.0V. Using these values,
the peak-to-peak voltage swing of each signal (TD or TD) is 500 mV p-p, which is referred as the single-ended swing for each
signal. In this example, since the differential signaling environment is fully symmetrical, the transmitter output’s differential
swing (VOD) has the same amplitude as each signal’s single-ended swing. The differential output signal ranges between 500
mV and –500 mV, in other words, VOD is 500 mV in one phase and –500 mV in the other phase. The peak differential voltage
(VDIFFp) is 500 mV. The peak-to-peak differential voltage (VDIFFp-p) is 1000 mV p-p.
2.20.2
SerDes Reference Clocks
The SerDes reference clock inputs are applied to an internal PLL whose output creates the clock used by the corresponding
SerDes lanes. The SerDes reference clocks for PCI Express are SD1_REF_CLK and, SD1_REF_CLK. The SerDes reference
clocks for the SATA and SGMII interfaces are SD2_REF_CLK and, SD2_REF_CLK.
The following sections describe the SerDes reference clock requirements and some application information.
2.20.2.1
SerDes Reference Clock Receiver Characteristics
Figure 58 shows a receiver reference diagram of the SerDes reference clocks.
The supply voltage requirements for X2VDD are specified in Table 2 and Table 3.
SerDes Reference Clock Receiver Reference Circuit Structure
— The SDn_REF_CLK and SDn_REF_CLK are internally AC-coupled differential inputs as shown in Figure 58.
Each differential clock input (SDn_REF_CLK or SDn_REF_CLK) has a 50-
Ω termination to SGND (xcorevss)
followed by on-chip AC-coupling.
Differential Swing, VID or VOD = A – B
A Volts
B Volts
SD
n_TX or
SD
n_RX
SD
n_TX or
SD
n_RX
Differential Peak Voltage, VDIFFp = |A – B|
Differential Peak-Peak Voltage, VDIFFpp = 2*VDIFFp (not shown)
Vcm = (A + B) / 2
相关PDF资料
PDF描述
MPC8536BVTAVLA 32-BIT, 1500 MHz, MICROPROCESSOR, PBGA783
MPC8536AVTAQGA 32-BIT, 1000 MHz, MICROPROCESSOR, PBGA783
MPC8536ECVTAUL 32-BIT, 1333 MHz, MICROPROCESSOR, PBGA783
MPC8536BVTAKGA 32-BIT, 600 MHz, MICROPROCESSOR, PBGA783
MPC8536ECVTAKGA 32-BIT, 600 MHz, MICROPROCESSOR, PBGA783
相关代理商/技术参数
参数描述
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MPC8536ECVTAUL 功能描述:微处理器 - MPU 32-BIT 1.333GHz 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
MPC8536ECVTAULA 功能描述:微处理器 - MPU 8536 Encrypted 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
MPC8536ECVTAVL 功能描述:微处理器 - MPU 32-BIT 1.5GHz 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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