參數(shù)資料
型號(hào)： MPC8308CZQAGD
廠商： FREESCALE SEMICONDUCTOR INC
元件分類(lèi)： 微控制器/微處理器
英文描述： 32-BIT, 266 MHz, MICROPROCESSOR, PBGA473
封裝： 19 X 19 MM, 0.80 MM PITCH, 1.39 MM HEIGHT, MAPBGA-473
文件頁(yè)數(shù)： 19/88頁(yè)
文件大?。?/td> 2550K
代理商： MPC8308CZQAGD
MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 1
26
Freescale Semiconductor
High-Speed Serial Interfaces (HSSI)
The supply voltage requirements for XCOREVDD are specified in Table 1 and Table 2.
SerDes reference clock receiver reference circuit structure
— The SD_REF_CLK and SD_REF_CLK are internally AC-coupled differential inputs as shown
in Figure 16. Each differential clock input (SD_REF_CLK or SD_REF_CLK) has a 50-
Ω
termination to XCOREVSS followed by on-chip AC-coupling.
— The external reference clock driver must be able to drive this termination.
— The SerDes reference clock input can be either differential or single ended. Refer to the
Differential Mode and Single-ended Mode description below for further detailed requirements.
The maximum average current requirement that also determines the common mode voltage range
— When the SerDes reference clock differential inputs are DC-coupled externally with the clock
driver chip, the maximum average current allowed for each input pin is 8 mA. In this case, the
exact common mode input voltage is not critical as long as it is within the range allowed by the
maximum average current of 8 mA (refer to the following bullet for more detail), since the
input is AC-coupled on-chip.
— This current limitation sets the maximum common mode input voltage to be less than 0.4 V
(0.4 V/50 = 8 mA) while the minimum common mode input level is 0.1 V above XCOREVSS.
For example, a clock with a 50/50 duty cycle can be produced by a clock driver with output
driven by its current source from 0 mA to 16 mA (0–0.8 V), such that each phase of the
differential input has a single-ended swing from 0 V to 800 mV with the common mode voltage
at 400 mV.
— If the device driving the SD_REF_CLK and SD_REF_CLK inputs cannot drive 50
Ω to
XCOREVSS DC, or it exceeds the maximum input current limitations, then it must be
AC-coupled off-chip.
The input amplitude requirement
— This requirement is described in detail in the following sections.
Figure 16. Receiver of SerDes Reference Clocks
Input
Amp
50
Ω
50
Ω
SD_REF_CLK
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MPC8308CZQAGDA 功能描述:微處理器 - MPU E300 EXT TEMP PB 400 RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類(lèi)型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
MPC8308-KIT 功能描述:開(kāi)發(fā)板和工具包 - 其他處理器 For MPC8308 Ethernet USB I2C SPI RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評(píng)估:P3041 核心:e500mc 接口類(lèi)型:I2C, SPI, USB 工作電源電壓:
MPC8308-NSG 功能描述:開(kāi)發(fā)板和工具包 - 其他處理器 MPC8308-NSG RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評(píng)估:P3041 核心:e500mc 接口類(lèi)型:I2C, SPI, USB 工作電源電壓:
MPC8308-NSG 制造商:Freescale Semiconductor 功能描述:MPC8308-NSG*NIC*
MPC8308-RDB 功能描述:開(kāi)發(fā)板和工具包 - 其他處理器 Refer. Board MPC8308 RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評(píng)估:P3041 核心:e500mc 接口類(lèi)型:I2C, SPI, USB 工作電源電壓:
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