mpc8314e Freescale Semiconductor, Inc, mpc8314e Datasheet - Page 62

• Manufacturer Part Number: mpc8314e
• Description: Powerquicc Ii Pro Processor Hardware Specifications
• Manufacturer: Freescale Semiconductor, Inc

PCI Express
62
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
Amount of voltage change
allowed during receiver
detection
TX DC common mode
voltage
TX short circuit current
limit
Parameter
Table 54. Differential Transmitter (TX) Output Specifications (continued)
MPC8314E PowerQUICC
V
V
T
T
TX-CM-DC-LINE-DELTA
V
TX-EYE-MEDIAN-to-
TX-RISE
TX-CM-DC- ACTIVE-
V
TX-RCV-DETECT
V
TX-IDLE-DIFFp
MAX-JITTER
V
IDLE-DELTA
I
TX-SHORT
Symbol
TX-CM-ACp
TX-DC-CM
, T
TX-FALL
™
Jitter is defined as the
measurement variation of the
crossing points (V
0 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]
|V
<= 25 mV
V
|V
V
|V
V
-V
The total amount of voltage
change that a transmitter can
apply to sense whether a low
impedance Receiver is
present.
The allowed DC Common
Mode voltage under any
conditions.
The total current the
Transmitter can provide when
shorted to its ground
II Pro Processor Hardware Specifications, Rev. 0
TX-CM-ACp
TXD-
TX-CM-DC
TX-CM-Idle-DC (During Electrical
TX-CM-DC
TX-CM-Idle-DC
TX-CM-DC-D+
TX-CM-DC-D-
TX-IDLE-DIFFp
TX-D+
TX-CM-DC (during L0)
TX-D+
TX-D+
TX-CM-DC-D+
TX-D+
TX-D-
TX-IDLE-D-
|<=100 mV
|/2 - V
|
|
+ V
+ V
+ V
Comments
= DC
= DC
TX-D-
TX-D-
TX-D-
= RMS(|V
TX-CM-DC
| <= 20 mV
= DC
—
= DC
= DC
- V
= |V
(avg)
|/2
(avg)
|/2 [L0]
|/2 [Electrical
TX-CM-DC-D-
TX-DIFFp-p
(avg)
TX-IDLE-D+
(avg)
(avg)
)
-
of
of
TXD+
of
of
of
+
=
|
0.125
Min
—
—
—
—
—
0
0
0
Typical
—
—
—
—
—
—
—
—
—
Freescale Semiconductor
Max
0.15
100
600
3.6
—
20
25
20
90
Units
mV
mV
mV
mV
mV
mA
UI
UI
V
Notes
2, 3
2, 5
—
2
2
2
2
6
6