Datasheet
Electrical characteristics
i.MX 8QuadXPlus and 8DualXPlus Automotive and Infotainment Applications Processors, Rev. 0, 11/2018
PRELIMINARYNXP Semiconductors 81
Figure 37. TX and RX eye diagram template
Table 76. PCIe transmitter eye specifications for example standards
UI A
OPENING
B
OPENING
A
OPENING
B
OPENING
V
DIFFp-p
min V
DIFFp-p
max
ps UI ps mV
PCI Express Gen 1 Transition Bit 400 0.75 0 300 0 800 1200
1
1
V
DIFFp-p
eye opening is limited to VDDIO under matched termination conditions.
PCI ExpressGen 1 De-emphasized Bit 400 0.75 0 300 0 505 757
PCI Express Gen 2 Transition Bit 200 0.75 0 150 0 800 1200
1
PCI Express Gen 2 De-emphasized Bit 200 0.75 0 150 0 379 850
Table 77. PCIe receiver eye specifications for example standards
UI A
OPENING
B
OPENING
A
OPENING
B
OPENING
V
DIFFp-p
min V
DIFFp-p
max
ps UI ps mV
PCI Express Gen 1 Transition Bit 400 0.4 0 160 0 175 1200
PCI Express Gen 2 Transition Bit 200 0 0 0 0 100 1200
PCI Express Gen 3 Virtual EYE
1
1
PCIE 3.0 8 GT/s measured using PCIE reference equalizer + CDR per PCIE specification.
125 0.3 0 38 0 25 1300