Datasheet

Electrical Characteristics
i.MX 6DualPlus/6QuadPlus Automotive Applications Processors, Rev. 3, 11/2018
NXP Semiconductors 121
4.12.15.1 PCIE_REXT Reference Resistor Connection
The impedance calibration process requires connection of reference resistor 200 Ω. 1% precision resistor
on PCIE_REXT pads to ground. It is used for termination impedance calibration.
4.12.16 Pulse Width Modulator (PWM) Timing Parameters
This section describes the electrical information of the PWM. The PWM can be programmed to select one
of three clock signals as its source frequency. The selected clock signal is passed through a prescaler before
being input to the counter. The output is available at the pulse-width modulator output (PWMO) external
pin.
Figure 83 depicts the timing of the PWM, and Table 76 lists the PWM timing parameters.
Figure 83. PWM Timing
4.12.17 SATA PHY Parameters
This section describes SATA PHY electrical specifications.
4.12.17.1 Transmitter and Receiver Characteristics
The SATA PHY meets or exceeds the electrical compliance requirements defined in the SATA
specifications.
NOTE
The tables in the following sections indicate any exceptions to the SATA
specification or aspects of the SATA PHY that exceed the standard, as well
as provide information about parameters not defined in the standard.
The following subsections provide values obtained from a combination of simulations and silicon
characterization.
Table 76. PWM Output Timing Parameters
ID Parameter Min Max Unit
— PWM Module Clock Frequency 0 ipg_clk MHz
P1 PWM output pulse width high 15 — ns
P2 PWM output pulse width low 15 — ns
PWMn_OUT