ppc8572elpxavnd Freescale Semiconductor, Inc, ppc8572elpxavnd Datasheet - Page 83

• Manufacturer Part Number: ppc8572elpxavnd
• Description: Mpc8572e Powerquicc Iii Integrated Communications Processors
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
UI
V
V
T
T
MAX-JITTER
T
V
V
IDLE-DELTA
V
V
V
V
TX-EYE
TX-EYE-MEDIAN-to-
TX-RISE
TX-DIFFp-p
TX-DE-RATIO
TX-CM-ACp
TX-CM-DC-ACTIVE-
TX-CM-DC-LINE-DELTA
TX-IDLE-DIFFp
TX-RCV-DETECT
TX-DC-CM
Symbol
, T
TX-FALL
MPC8572E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 4
Unit Interval
Differential
Peak-to-Peak
Output Voltage
De- Emphasized
Differential
Output Voltage
(Ratio)
Minimum TX Eye
Width
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 L0 and
Electrical Idle
Absolute Delta of
DC Common
Mode between
D+ and D–
Electrical Idle
differential Peak
Output Voltage
The amount of
voltage change
allowed during
Receiver
Detection
The TX DC
Common Mode
Voltage
Parameter
Table 61. Differential Transmitter (TX) Output Specifications
399.88
0.125
–3.0
0.70
Min
0.8
—
—
0
0
0
0
Nominal
–3.5
400
—
—
—
—
—
—
—
—
—
—
400.12
Max
0.15
-4.0
100
600
1.2
3.6
—
—
20
25
20
Units
mV
mV
mV
mV
mV
dB
ps
UI
UI
UI
V
V
Each UI is 400 ps ± 300 ppm. UI does not account
for Spread Spectrum Clock dictated variations. See
Note 1.
V
Ratio of the V
bits after a transition divided by the V
the first bit after a transition. See Note 2.
The maximum Transmitter jitter can be derived as
T
See Notes 2 and 3.
Jitter is defined as the measurement variation of the
crossing points (V
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. See Notes 2 and 3.
See Notes 2 and 5
V
V
See Note 2
|V
Idle)
V
V
[Electrical Idle]
See Note 2.
|V
V
V
See Note 2.
V
mV
See Note 2.
The total amount of voltage change that a
transmitter can apply to sense whether a low
impedance Receiver is present. See Note 6.
The allowed DC Common Mode voltage under any
conditions. See Note 6.
TX-MAX-JITTER
TX-DIFFp-p
TX-CM-ACp
TX-CM-DC
TX-CM-DC
TX-CM-Idle-DC
TX-CM-DC-D+
TX-CM-DC-D-
TX-IDLE-DIFFp
TX-CM-DC (during L0)
TX-CM-DC-D+
|<=100 mV
= DC
= DC
= 2*|V
= RMS(|V
TX-DIFFp-p
= DC
= DC
= DC
- V
= |V
= 1 - T
(avg)
(avg)
TX-CM-DC-D-
TX-D+
TX-DIFFp-p
(avg)
TX-IDLE-D+
(avg)
Comments
(avg)
- V
of |V
of |V
TXD+
TX-EYE
of |V
of the second and following
TX-CM-Idle-DC (During Electrical
- V
of |V
of |V
TX-D+
TX-D+
TX-D-
+ V
= 0 V) in relation to a
TX-D-
TX-D+
= 0.3 UI.
| <= 25 mV
TX-D+
-V
TXD-
+ V
+ V
TX-IDLE-D-
| See Note 2.
|
|
|/2 - V
TX-D-
TX-D-
+ V
TX-DIFFp-p
TX-D-
|/2
|/2 [L0]
PCI Express
TX-CM-DC
| <= 20
|/2
of
83
)