P5010NSE1VNB Freescale Semiconductor, P5010NSE1VNB Datasheet - Page 105
P5010NSE1VNB
Manufacturer Part Number
P5010NSE1VNB
Description
Processors - Application Specialized Tmp Enc 2000/1333
Manufacturer
Freescale Semiconductor
Datasheet
1.P5010NXN1QMB.pdf
(163 pages)
Specifications of P5010NSE1VNB
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This figure shows how the signals are defined. For illustration purposes only, one SerDes lane is used in the description. This
figure shows the waveform for either a transmitter output (SD_TXn and SD_TXn) or a receiver input (SD_RXn and SD_RXn).
Each signal swings between A volts and B volts where A > B.
Using this waveform, the definitions are as shown in the following list. To simplify the illustration, the definitions assume that
the SerDes transmitter and receiver operate in a fully symmetrical differential signaling environment:
Single-Ended Swing
Differential Output Voltage, V
Differential Input Voltage, V
Differential Peak Voltage, V
Differential Peak-to-Peak, V
Differential Waveform
Freescale Semiconductor
A Volts
B Volts
Figure 36. Differential Voltage Definitions for Transmitter or Receiver
P5020/P5010 QorIQ Integrated Processor Hardware Specifications, Rev. 0
SD_TXn
SD_RXn
SD_TXn
SD_RXn
The transmitter output signals and the receiver input signals SD_TXn, SD_TXn, SD_RXn and
SD_RXn each have a peak-to-peak swing of A – B volts. This is also referred as each signal wire’s
single-ended swing.
The differential output voltage (or swing) of the transmitter, V
the two complimentary output voltages: V
or negative.
The differential input voltage (or swing) of the receiver, V
complimentary input voltages: V
negative.
The peak value of the differential transmitter output signal or the differential receiver input signal
is defined as the differential peak voltage, V
Since 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-to-peak value of the differential transmitter
output signal or the differential receiver input signal is defined as differential peak-to-peak voltage,
V
twice of the differential peak. For example, the output differential peak-peak voltage can also be
calculated as V
The differential waveform is constructed by subtracting the inverting signal (SD_TXn, for
example) from the non-inverting signal (SD_TXn, for example) within a differential pair. There is
only one signal trace curve in a differential waveform. The voltage represented in the differential
DIFFp
DIFFp-p
ID
DIFFp-p
OD
(or Differential Input Swing):
(or Differential Output Swing):
= 2 × V
or
or
Differential Peak-Peak Voltage, V
TX-DIFFp-p
DIFFp
Differential Swing, V
Differential Peak Voltage, V
= 2 × |(A – B)| volts, which is twice the differential swing in amplitude, or
= 2 × |V
SD_RXn
OD
|.
– V
SD_TXn
ID
DIFFp
SD_RXn.
or V
DIFFpp
OD
– V
DIFFp
= |A – B| volts.
= 2 × V
= A – B
SD_TXn.
The V
= |A – B|
ID
DIFFp
, is defined as the difference of the two
ID
The V
value can be either positive or
OD
(not shown)
, is defined as the difference of
OD
value can be either positive
Electrical Characteristics
V
cm
= (A + B)/2
105
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