MPC8314ECVRADDA Freescale Semiconductor, MPC8314ECVRADDA Datasheet - Page 64

• Manufacturer Part Number: MPC8314ECVRADDA
• Description: MPU POWERQUICC II PRO 620-PBGA
• Manufacturer: Freescale Semiconductor

Specifications of MPC8314ECVRADDA

• Processor Type: MPC83xx PowerQUICC II Pro 32-Bit
• Speed: 266MHz
• Voltage: 1V
• Mounting Type: Surface Mount
• Package / Case: 620-PBGA
• Processor Series: MPC8xxx
• Core: e300
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 50 MHz
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PCI Express
16.4.2
The TX eye diagram in
Figure
that must be met for the transmitter. Both diagrams must be aligned in time using the jitter median to locate
the center of the eye diagram. The different eye diagrams differ in voltage depending on whether it is a
transition bit or a de-emphasized bit. The exact reduced voltage level of the de-emphasized bit is always
relative to the transition bit.
The eye diagram must be valid for any 250 consecutive UIs.
A recovered TX UI is calculated over 3500 consecutive unit intervals of sample data. The eye diagram is
created using all edges of the 250 consecutive UI in the center of the 3500 UI used for calculating the TX
UI.
64
Crosslink random timeout
Notes:
1. No test load is necessarily associated with this value.
2. Specified at the measurement point into a timing and voltage compliance test load as shown in
3. A T
4. The transmitter input impedance shall result in a differential return loss greater than or equal to 12 dB and a common mode
5. Measured between 20%–80% at transmitter package pins into a test load as shown in
6. See Section 4.3.1.8 of the PCI Express Base Specifications , Rev 1.0a.
7. See Section 4.2.6.3 of the PCI Express Base Specifications , Rev 1.0a.
8. MPC8315E SerDes transmitter does not have C
any 250 consecutive TX UIs. (Also refer to the transmitter compliance eye diagram shown in
transmitter collected over any 250 consecutive TX UIs. The T
TX jitter budget collected over any 250 consecutive TX UIs. It should be noted that the median is not the same as the mean.
The jitter median describes the point in time where the number of jitter points on either side is approximately equal as
opposed to the averaged time value.
return loss greater than or equal to 6 dB over a frequency range of 50 MHz to 1.25 GHz. This input impedance requirement
applies to all valid input levels. The reference impedance for return loss measurements is 50 Ω to ground for both the D+ and
D– line (that is, as measured by a vector network analyzer with 50-Ω probes, see
C
TX
TX-EYE
, is optional for the return loss measurement.
Parameter
51) in place of any real PCI Express interconnect + RX component. There are two eye diagrams
= 0.70 UI provides for a total sum of deterministic and random jitter budget of T
Transmitter Compliance Eye Diagrams
It is recommended that the recovered TX UI be calculated using all edges in
the 3500 consecutive UI interval with a fit algorithm using a minimization
merit function (that is, least squares and median deviation fits).
Table 54. Differential Transmitter (TX) Output Specifications (continued)
MPC8314E PowerQUICC
Figure 49
T
Symbol
crosslink
is specified using the passive compliance/test measurement load (see
™
TX
This random timeout helps
resolve conflicts in crosslink
configuration by eventually
resulting in only one
Downstream and one
Upstream Port.
II Pro Processor Hardware Specifications, Rev. 0
built-in. An external AC Coupling capacitor is required
NOTE
Comments
TX-EYE-MEDIAN-to-MAX-JITTER
Figure
Min
0
Figure 51
51). Note that the series capacitors,
Typical
median is less than half of the total
TX-JITTER-MAX
—
Figure
Figure 51
for both V
Freescale Semiconductor
Max
49.)
1
and measured over
= 0.30 UI for the
TX-D+
Units
ms
and V
Notes
TX-D-
7
.