參數(shù)資料
型號: MPC8378ECVRAGD
廠商: Freescale Semiconductor
文件頁數(shù): 114/128頁
文件大小: 0K
描述: MPU POWERQUICC II PRO 689-PBGA
標準包裝: 27
系列: MPC83xx
處理器類型: 32-位 MPC83xx PowerQUICC II Pro
速度: 400MHz
電壓: 1V
安裝類型: 表面貼裝
封裝/外殼: 689-BBGA 裸露焊盤
供應商設備封裝: 689-TEPBGA II(31x31)
包裝: 托盤
MPC8378E PowerQUICC II Pro Processor Hardware Specifications, Rev. 8
86
Freescale Semiconductor
that the LVPECL clock driver’s output impedance is 50
Ω. R1 is used to DC-bias the LVPECL outputs
prior to AC-coupling. Its value could be ranged from 140
Ω to 240 Ω depending on clock driver vendor’s
requirement. R2 is used together with the SerDes reference clock receiver’s 50
Ω termination resistor to
attenuate the LVPECL output’s differential peak level such that it meets the device SerDes reference
clock’s differential input amplitude requirement (between 200 mV and 800 mV differential peak). For
example, if the LVPECL output’s differential peak is 900 mV and the desired SerDes reference clock input
amplitude is selected as 600 mV, the attenuation factor is 0.67, which requires R2 = 25
Ω. Consult clock
driver chip manufacturer to verify whether this connection scheme is compatible with a particular clock
driver chip.
Figure 61. AC-Coupled Differential Connection with LVPECL Clock Driver (Reference Only)
50
Ω
50
Ω
SD
n_REF_CLK
SD
n_REF_CLK
Clock Driver
100
Ω differential PWB trace
SerDes Refer.
CLK Receiver
Clock Driver
CLK_Out
LVPECL CLK Driver Chip
R2
R1
10 nF
Chip
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相關代理商/技術參數(shù)
參數(shù)描述
MPC8378ECVRAGDA 功能描述:微處理器 - MPU 8378 PBGA XT PbFr W/ENC 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 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
MPC8378ECVRAGFA 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:PowerQUICC? II Pro Processor Hardware Specifications
MPC8378ECVRAGGA 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:PowerQUICC? II Pro Processor Hardware Specifications
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