MPC8572ECLPXATLD datasheet(76/140 Pages) FREESCALE

Part #	MPC8572ECLPXATLD

Description	MPC8572E PowerQUICC III Integrated Processor Hardware Specifications

PDF	140 Pages

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Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

Direct Link	http://www.freescale.com

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MPC8572E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 4

Freescale Semiconductor

High-Speed Serial Interfaces (HSSI)

Figure 46. Differential Reference Clock Input DC Requirements (External AC-Coupled)

Figure 47. Single-Ended Reference Clock Input DC Requirements

15.2.3

Interfacing With Other Differential Signaling Levels

•

With on-chip termination to SGND_SRDSn (xcorevss), the differential reference clocks inputs are

HCSL (High-Speed Current Steering Logic) compatible DC-coupled.

•

Many other low voltage differential type outputs like LVDS (Low Voltage Differential Signaling)

can be used but may need to be AC-coupled due to the limited common mode input range allowed

(100 to 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,

additionally to AC-coupling.

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

< SDn_REF_CLK Input Amplitude < 800 mV

MPC8572ECLPXATLD Datasheet(PDF) 76 Page - Freescale Semiconductor, Inc