MC8640DHX1000HE Freescale Semiconductor, MC8640DHX1000HE Datasheet - Page 62
MC8640DHX1000HE
Manufacturer Part Number
MC8640DHX1000HE
Description
IC DUAL CORE PROCESSOR 1023-CBGA
Manufacturer
Freescale Semiconductor
Datasheet
1.MC8640HX1067NE.pdf
(130 pages)
Specifications of MC8640DHX1000HE
Processor Type
MPC86xx PowerPC 32-Bit
Speed
1.0GHz
Voltage
1.05V
Mounting Type
Surface Mount
Package / Case
1023-FCCBGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Features
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High-Speed Serial Interfaces (HSSI)
13.2.3
The following list explains characteristics of interfacing with other differential signaling levels.
62
•
•
•
SD n _REF_CLK
SD n _REF_CLK
With on-chip termination to SGND, 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. It may need to be DC-biased at
clock driver output first and followed with series attenuation resistor to reduce the amplitude, in
addition to AC-coupling.
Figure 41. Differential Reference Clock Input DC Requirements (External AC-Coupled)
Interfacing With Other Differential Signaling Levels
SD n _REF_CLK
SD n _REF_CLK
MPC8640 and MPC8640D Integrated Host Processor Hardware Specifications, Rev. 3
Figure 42. Single-Ended Reference Clock Input DC Requirements
200mV < Input Amplitude or Differential Peak < 800mV
400 mV < SD n _REF_CLK Input Amplitude < 800 mV
Vmin > Vcm – 400 mV
Vmax < Vcm + 400 mV
0 V
Freescale Semiconductor
Vcm
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