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| 型號： | MPC8377E-RDBA |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 107/127頁 |
| 文件大小： | 0K |
| 描述： | BOARD REF DES MPC8377 REV 2.1 |
| 設(shè)計資源： | MPC8379E-RDB Ref Design Guide |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | PowerQUICC II™ PRO |
| 類型： | MPU |
| 適用于相關(guān)產(chǎn)品： | MPC8377E |
| 所含物品： | 板，CD |
| 相關(guān)產(chǎn)品： | MPC8378EVRANG-ND - MPU PWRQUICC II 800MHZ 689TEPBGA MPC8378EVRALG-ND - MPU PWRQUICC II 667MHZ 689TEPBGA MPC8378EVRAJF-ND - MPU PWRQUICC II 533MHZ 689TEPBGA MPC8378EVRAGD-ND - MPU PWRQUICC II 400MHZ 689TEPBGA MPC8379EVRANG-ND - MPU PWRQUICC II 800MHZ 689TEPBGA MPC8379EVRALG-ND - MPU PWRQUICC II 667MHZ 689TEPBGA MPC8379EVRAJF-ND - MPU PWRQUICC II 533MHZ 689TEPBGA MPC8379EVRAGD-ND - MPU PWRQUICC II 400MHZ 689TEPBGA MPC8377EVRALG-ND - MPU PWRQUICC II 667MHZ 689TEPBGA MPC8377EVRAJF-ND - MPU PWRQUICC II 533MHZ 689TEPBGA 更多... |
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MPC8377E PowerQUICC II Pro Processor Hardware Specifications, Rev. 8
80
Freescale Semiconductor
Figure 51. 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 2.5 V and 2.0 V. Using these values, the peak-to-peak voltage swing of each signal (TD
or TD) is 500 mVp-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 mVp-p.
21.2
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 inputs are SD1_REF_CLK and
SD1_REF_CLK for both lanes of SerDes1, and SD2_REF_CLK and SD2_REF_CLK for both lanes of
SerDes2.
The following sections describe the SerDes reference clock requirements and some application
information.
21.2.1
SerDes Reference Clock Receiver Characteristics
Figure 52 shows a receiver reference diagram of the SerDes reference clocks.
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 52. Each differential clock input (SDn_REF_CLK or SDn_REF_CLK) has a
50
Ω termination to SGND_SRDSn (xcorevss) followed by on-chip AC-coupling.
— The external reference clock driver must be able to drive this termination.
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
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MPC8377E-RDBA | 制造商:Freescale Semiconductor 功能描述:MPC837x Family Reference Desig |
| MPC8377EVRAFDA | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:PowerQUICC? II Pro Processor Hardware Specifications |
| MPC8377EVRAFFA | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:PowerQUICC? II Pro Processor Hardware Specifications |
| MPC8377EVRAFGA | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:PowerQUICC? II Pro Processor Hardware Specifications |
| MPC8377EVRAGD | 功能描述:微處理器 - MPU PBGA W/ ENCR 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 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型: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 |
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