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MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 2

Freescale Semiconductor

High-Speed Serial Interfaces (HSSI)

—The SDn_REF_CLK input average voltage must be between 200 and 400 mV. Figure 42 shows

the SerDes reference clock input requirement for single-ended signaling mode.

— To meet the input amplitude requirement, the reference clock inputs might need to be DC or

AC-coupled externally. For the best noise performance, the reference of the clock could be DC

or AC-coupled into the unused phase (SDn_REF_CLK) through the same source impedance as

the clock input (SDn_REF_CLK) in use.

Figure 40. Differential Reference Clock Input DC Requirements (External DC-Coupled)

Figure 41. Differential Reference Clock Input DC Requirements (External AC-Coupled)

Figure 42. Single-Ended Reference Clock Input DC Requirements

n_REF_CLK

Vmax < 800 mV

Vmin > 0V

100 mV < Vcm < 400 mV

200 mV < Input Amplitude or Differential Peak < 800 mV

n_REF_CLK

Vcm

200 mV < Input Amplitude or Differential Peak < 800 mV

Vmax < Vcm + 400 mV

Vmin > Vcm - 400 mV

n_REF_CLK

400 mV < SD

n_REF_CLK Input Amplitude < 800 mV

相關代理商/技術參數(shù)	參數(shù)描述
MC8641VU1250J	制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications
MC8641VU1250K	制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications
MC8641VU1250N	制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications
MC8641VU1333G	制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications
MC8641VU1333H	制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications

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