mpc8314e Freescale Semiconductor, Inc, mpc8314e Datasheet - Page 66

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

PCI Express
66
Maximum time between
the jitter median and
maximum deviation from
the median.
AC peak common mode
input voltage
Differential return loss
Common mode return
loss
DC differential input
impedance
DC Input Impedance
Powered down DC input
impedance
Electrical idle detect
threshold
Unexpected Electrical Idle
Enter Detect Threshold
Integration Time
Parameter
MPC8314E PowerQUICC
Table 55. Differential Receiver (RX) Input Specifications (continued)
T
V
RX-EYE-MEDIAN-to-MAX
T
RX-IDLE-DET-DIFFp-p
Z
RX-IDLE-DET-DIFF-
RX-HIGH-IMP-DC
V
Z
ENTERTIME
RL
RL
RX-DIFF-DC
RX-CM-ACp
Symbol
Z
-JITTER
RX-DC
RX-DIFF
RX-CM
™
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
Measured over 50 MHz to
1.25 GHz with the D+ and D-
lines biased at +300 mV and
-300 mV, respectively.
Measured over 50 MHz to
1.25 GHz with the D+ and D-
lines biased at 0 V.
RX DC differential mode
impedance.
Required RX D+ as well as D-
DC Impedance (50 ± 20%
tolerance).
Required RX D+ as well as D-
DC Impedance when the
Receiver terminations do not
have power.
V
Measured at the package pins
of the Receiver
An unexpected Electrical Idle
(Vrx-diffp-p <
Vrx-idle-det-diffp-p) must be
recognized no longer than
Trx-idle-det-diff-entertime to
signal an unexpected idle
condition.
II Pro Processor Hardware Specifications, Rev. 0
RX-CM-ACp
RXD-
RX-CM-DC
PEEIDT
RX-D+
|/2 - V
+ V
= 2*|V
Comments
= DC
RX-D-
RX-CM-DC
= |V
RX-D+
RXD+
(avg)
|/2
RX-DIFFp-p
-V
of
+
RX-D-
=
|
200 k
Min
15
80
40
65
—
—
—
6
Typical
100
50
—
—
—
—
—
—
—
Freescale Semiconductor
Max
150
120
175
0.3
—
—
60
—
10
Units
mV
mV
ms
dB
dB
UI
Ω
Ω
Ω
Notes
2, 3, 7
2, 5
—
—
2
4
4
5
6