MPC8640DEC datasheet(63/140 Pages) FREESCALE

Part #	MPC8640DEC

Description	Integrated Host Processor Hardware Specifications

PDF	140 Pages

Scroll/Zoom	100%

Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

Direct Link	http://www.freescale.com

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63 / 140 page

MPC8640 and MPC8640D Integrated Host Processor Hardware Specifications, Rev. 1

Freescale Semiconductor

High-Speed Serial Interfaces (HSSI)

— 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

SDn_REF_CLK

Vmax < 800mV

Vmin > 0V

100mV < Vcm < 400mV

200mV < Input Amplitude or Differential Peak < 800mV

SDn_REF_CLK

Vcm

200mV < Input Amplitude or Differential Peak < 800mV

Vmax < Vcm + 400mV

Vmin > Vcm

− 400mV

SDn_REF_CLK

400mV < SDn_REF_CLK Input Amplitude < 800mV

MPC8640DEC Datasheet(PDF) 63 Page - Freescale Semiconductor, Inc