P5010NXN1TNB Freescale Semiconductor, P5010NXN1TNB Datasheet - Page 119

• Manufacturer Part Number: P5010NXN1TNB
• Description: Processors - Application Specialized P5010 Ext Tmp NoEnc 1800/1333 r2.0
• Manufacturer: Freescale Semiconductor

Specifications of P5010NXN1TNB

• Rohs: yes

Two transmitter specifications allow for solutions ranging from simple board-to-board interconnect to driving two connectors
across a backplane. A single receiver specification is given that accepts signals from both the short run and long run transmitter
specifications.
The short run transmitter should be used mainly for chip-to-chip connections on either the same printed circuit board or across
a single connector. This covers the case where connections are made to a mezzanine (daughter) card. The minimum swings of
the short run specification reduce the overall power used by the transceivers.
The long run transmitter specifications use larger voltage swings that are capable of driving signals across backplanes. This
allows a user to drive signals across two connectors and a backplane. The specifications allow a distance of at least 50 cm at all
baud rates.
All unit intervals are specified with a tolerance of ±100 ppm. The worst case frequency difference between any transmit and
receive clock be 200 ppm.
To ensure interoperability between drivers and receivers of different vendors and technologies, AC coupling at the receiver
input must be used.
2.20.5.1
This section defines the terms used in the description and specification of the differential signals used by the LP-Serial links.
Figure 45
receiver input (RD and RD). Each signal swings between A volts and B volts where A > B. Using these waveforms, the
definitions are as follows:
To illustrate these definitions using real values, consider the case of a CML (current mode logic) transmitter that has a common
mode voltage of 2.25 V, and each of its outputs, TD and TD, has a swing that goes between 2.5 V and 2.0 V. Using these values,
the peak-to-peak voltage swing of the signals TD and TD is 500 mV p-p. The differential output signal ranges between 500 mV
and –500 mV. The peak differential voltage is 500 mV. The peak-to-peak differential voltage is 1000 mV p-p.
Freescale Semiconductor
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The transmitter output signals and the receiver input signals—TD, TD, RD, and RD—each have a peak-to-peak swing
of A – B volts.
The differential output signal of the transmitter, V
The differential input signal of the receiver, V
The differential output signal of the transmitter and the differential input signal of the receiver each range from A – B
to –(A – B) volts.
The peak value of the differential transmitter output signal and the differential receiver input signal is A – B volts.
The peak-to-peak value of the differential transmitter output signal and the differential receiver input signal is
2 × (A – B) volts.
A Volts
B Volts
shows how the signals are defined. The figures show waveforms for either a transmitter output (TD and TD) or a
Signal Definitions
Figure 45. Differential Peak-Peak Voltage of Transmitter or Receiver
P5020/P5010 QorIQ Integrated Processor Hardware Specifications, Rev. 0
TD or RD
TD or RD
Differential Peak-Peak = 2 × (A – B)
ID
, is defined as V
OD
, is defined as V
RD
– V
TD
RD
– V
TD
Electrical Characteristics
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