參數(shù)資料
型號: MPC8308VMAGDA
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: RISC MICROCONTROLLER, PBGA473
封裝: 19 X 19 MM, 1.39 MM HEIGHT, 0.80 MM PITCH, LEAD FREE, PLASTIC, MABGA-473
文件頁數(shù): 22/90頁
文件大?。?/td> 1123K
代理商: MPC8308VMAGDA
MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 2
Freescale Semiconductor
29
High-Speed Serial Interfaces (HSSI)
Figure 17. Differential Reference Clock Input DC Requirements (External DC-Coupled)
Figure 18. Differential Reference Clock Input DC Requirements (External AC-Coupled)
Figure 19. Single-Ended Reference Clock Input DC Requirements
10.2.3
Interfacing with Other Differential Signaling Levels
With on-chip termination to XCOREVSS, the differential reference clocks inputs are high-speed current
steering logic (HCSL) compatible and DC coupled.
Many other low voltage differential type outputs like low-voltage differential signaling (LVDS) can be
used but may need to be AC-coupled due to the limited common mode input range allowed (100–400 mV)
for DC-coupled connection.
LVPECL outputs can produce signal with too large amplitude and may need to be DC-biased at clock
driver output first, then followed with series attenuation resistor to reduce the amplitude, in addition to
AC-coupling.
SD_REF_CLK
Vmax < 80 0mV
Vmin > 0V
100 mV < Vcm < 400 mV
200 mV < Input Amplitude or Differential Peak < 800mV
SD_REF_CLK
Vcm
200mV < Input Amplitude or Differential Peak < 800mV
Vmax < Vcm + 400 mV
Vmin > Vcm – 400 mV
SD_REF_CLK
400 mV < SD_REF_CLK Input Amplitude < 800 mV
0V
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