Electrical Characteristics
Table 29. Long Run Transmitter AC Timing Specifications—2.5 GBaud
Range
Characteristic
Symbol
Min
Max
Unit
Notes
Output Voltage
V O
-0.40
2.30
V
Voltage relative to COMMON of either signal
comprising a differential pair
Differential Output Voltage
Deterministic Jitter
Total Jitter
V DIFFPP
J D
J T
800
1600
0.17
0.35
mV PP
UI PP
UI PP
Multiple output skew
S MO
1000
ps
Skew at the transmitter output between lanes of a
multilane link
Unit Interval
UI
400
400
ps
± 100 ppm
Table 30. Long Run Transmitter AC Timing Specifications—3.125 GBaud
Range
Characteristic
Symbol
Min
Max
Unit
Notes
Output Voltage
V O
-0.40
2.30
V
Voltage relative to COMMON of either signal
comprising a differential pair
Differential Output Voltage
Deterministic Jitter
Total Jitter
V DIFFPP
J D
J T
800
1600
0.17
0.35
mV PP
UI PP
UI PP
Multiple output skew
S MO
1000
ps
Skew at the transmitter output between lanes of a
multilane link
Unit Interval
UI
320
320
ps
± 100 ppm
For each baud rate at which an LP-Serial transmitter is specified to operate, the output eye pattern of the transmitter shall fall
entirely within the unshaded portion of the transmitter output compliance mask shown in Figure 12 with the parameters
specified in Table 31 when measured at the output pins of the device and the device is driving a 100 Ω ± 5% differential resistive
load. The output eye pattern of an LP-Serial transmitter that implements pre-emphasis (to equalize the link and reduce
inter-symbol interference) need only comply with the transmitter output compliance mask when pre-emphasis is disabled or
minimized.
MSC8144 Quad Core Digital Signal Processor Data Sheet, Rev. 16
Freescale Semiconductor
45
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