mpc8568e Freescale Semiconductor, Inc, mpc8568e Datasheet - Page 74

• Manufacturer Part Number: mpc8568e
• Description: Mpc8568e Powerquicc Iii Processor
• Manufacturer: Freescale Semiconductor, Inc

UI
V
PCI Express
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.
14.4.3
Table 52
specified at the component pins.
74
RX-DIFFp-p
Symbol
defines the specifications for the differential input at all receivers (RXs). The parameters are
Figure 49. Minimum Transmitter Timing and Voltage Output Compliance Specifications
MPC8568E/MPC8567E PowerQUICC III™ Integrated Processor Hardware Specifications, Rev. 0
Differential Receiver (RX) Input Specifications
It is recommended that the recovered TX UI is 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).
Unit Interval
Differential
Peak-to-Peak
Output Voltage
Parameter
Table 52. Differential Receiver (RX) Input Specifications
399.8
0.175
Min
8
Nom
400
—
NOTE
400.12
1.200
Max
Units
ps
V
Each UI is 400 ps ± 300 ppm. UI does not
account for Spread Spectrum Clock dictated
variations. See Note 1.
V
See Note 2.
RX-DIFFp-p
= 2*|V
Comments
RX-D+
Freescale Semiconductor
– V
RX-D-
|