MPC8378E-MDS-PB Freescale Semiconductor, MPC8378E-MDS-PB Datasheet - Page 68
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MPC8378E-MDS-PB
Manufacturer Part Number
MPC8378E-MDS-PB
Description
BOARD PROCESSOR FOR MDS S
Manufacturer
Freescale Semiconductor
Type
MPUr
Specifications of MPC8378E-MDS-PB
Contents
Board
For Use With/related Products
MPC8378
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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PCI Express
15.4.1
Table 57
specified at the component pins.
68
Unit interval
Differential
peak-to-peak output
voltage
De-emphasized
differential output
voltage (ratio)
Minimum Tx eye width The maximum transmitter
Maximum time between
the jitter median and
maximum deviation
from the median
D+/D– Tx output
rise/fall time
RMS AC peak common
mode output voltage
Absolute delta of DC
common mode voltage
during LO and electrical
idle
Parameter
defines the specifications for the differential output at all transmitters. The parameters are
Differential Transmitter (Tx) Output
MPC8378E PowerQUICC II Pro Processor Hardware Specifications, Rev. 4
Each U
ppm. U
for Spread Spectrum Clock
dictated variations.
V
V
Ratio of the V
second and following bits after
a transition divided by the
V
transition.
jitter can be derived as
T
U
Jitter is defined as the
measurement variation of the
crossing points (V
V) in relation to a recovered Tx
UI. A recovered Tx UI is
calculated over 3500
consecutive unit intervals of
sample data. Jitter is
measured using all edges of
the 250 consecutive UI in the
center of the 3500 UI used for
calculating the Tx UI.
—
V
V
V
|V
|V
V
Idle)
V
|V
V
|V
Idle]
TX-MAX-JITTER
PEDPPTX
TX-D-
PEDPPTX
PEACPCMTX
TXD-
TX-CM-DC
TX-CM-Idle-DC (During Electrical
TX-CM-DC
TX-CM-Idle-DC
PEEWTX
TX-D+
TX-CM-DC (during LO)
TX-D+
TX-D+
Table 57. Differential Transmitter (Tx) Output Specifications
|<=100 mV
|/2 – V
|
PETX
PETX
– V
– V
– V
Conditions
= 0.3 UI.
of the first bit after a
= 2 × |V
= DC
= DC
TX-D-
TX-D-
TX-D-
TX-CM-DC
does not account
is 400 ps ± 300
= RMS(|V
PEDPPTX
= DC
= 1 –
(avg)
|/2
(avg)
|/2 [LO]
|/2 [Electrical
PEDPPTX
TX-D+
(avg)
of
of
)
–
of the
TXD+
–
of
= 0
–
V
T
T
TX-CM-DC- ACTIVE-
TX-EYE-MEDIAN-to-
TX-RISE
V
V
V
MAX-JITTER
IDLE-DELTA
TX-DE-RATIO
Symbol
TX-CM-ACp
TX-DIFFp-p
T
TX-EYE
UI
, T
TX-FALL
399.88
0.125
–3.0
0.70
Min
0.8
—
—
0
Typical
–3.5
400
—
—
—
—
—
—
400.12
Freescale Semiconductor
Max
–4.0
0.15
100
1.2
—
—
20
Units
mV
mV
dB
ps
UI
UI
UI
V
Notes
2, 3
2, 3
2, 5
1
2
2
2
2
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