Datasheet

Electrical characteristics
i.MX 8QuadXPlus and 8DualXPlus Automotive and Infotainment Applications Processors, Rev. 0, 11/2018
PRELIMINARY NXP Semiconductors78
4.10.8.4 MIPI-DSI LP-TX specifications
Table 69. MIPI high-speed transmitter AC specifications
Symbol Parameter Min Typ Max Unit
ΔV
CMTX(HF)
Common-level variations above 450 MHz 15 mV
RMS
ΔV
CMTX(LF)
Common-level variation between 50-450 MHz 25 mV
PEAK
t
R
and t
F
1
1
UI is the long-term average unit interval.
Rise Time and Fall Time (20% to 80%) 100 0.35 UI ps
Table 70. MIPI low-power transmitter DC specifications
Symbol Parameter Min Typ Max Unit
V
OH
1
1
This specification can only be met when limiting the core supply variation from 1.1 V till 1.3 V.
Thevenin Output High Level 1.1 1.2 1.3 V
V
OL
Thevenin Output Low Level –50 50 mV
Z
OLP
2
2
Although there is no specified maximum for ZOLP, the LP transmitter output impedance ensures the TRLP/TFLP specification
is met.
Output Impedance of Low Power Transmitter 110 Ω
Table 71. MIPI low-power transmitter AC specifications
Symbol Parameter Min Typ Max Unit
T
RLP
/
T
FLP
1
1
C
LOAD
includes the low equivalent transmission line capacitance. The capacitance of TX and RX are assumed to always be <
10 pF. The distributed line capacitance can be up to 50 pF for a transmission line with 2 ns delay.
15% to 85% Rise Time and Fall Time 25 ns
T
REOT
1,2,3
2
The rise-time of TREOT starts from the HS common-level at the moment of the differential amplitude drops below 70 mV, due
to stopping the differential drive.
30% to 85% Rise Time and Fall Time 35 ns
T
LP-PULSE-TX
4
Pulse width of the LP exclusive-OR clock: First LP exclusive-OR clock pulse after Stop
state or last pulse before Stop state
40 ns
Pulse width of the LP exclusive-OR clock: All other pulses 20 ns
T
LP-PER-TX
Period of the LP exclusive-OR clock 90 ns
δV/δt
SR
1,5,6,7
Slew Rate @ C
LOAD
= 0 pF 30 500 mV/ns
Slew Rate @ C
LOAD
= 5 pF 30 200 mV/ns
Slew Rate @ C
LOAD
= 20 pF 30 150 mV/ns
Slew Rate @ C
LOAD
= 70 pF 30 100 mV/ns
C
LOAD
Load Capacitance 0 70 pF