Datasheet

i.MX 6Dual/6Quad Automotive and Infotainment Applications Processors, Rev. 6, 11/2018
34 NXP Semiconductors
Electrical Characteristics
power consumption. If boundary scan test is used, SATA_VP and SATA_VPH must remain
powered.
• When the PCIE interface is not used, the PCIE_VP, PCIE_VPH, and PCIE_VPTX supplies should
be grounded. The input and output supplies for rest of the ports (PCIE_REXT, PCIE_RX_N,
PCIE_RX_P, PCIE_TX_N, and PCIE_TX_P) can remain unconnected. It is recommended not to
turn the PCIE_VPH supply OFF while the PCIE_VP supply is ON, as it may lead to excessive
power consumption. If boundary scan test is used, PCIE_VP, PCIE_VPH, and PCIE_VPTX must
remain powered.
4.3 Integrated LDO Voltage Regulator Parameters
Various internal supplies can be powered ON from internal LDO voltage regulators. All the supply pins
named *_CAP must be connected to external capacitors. The onboard LDOs are intended for internal use
only and should not be used to power any external circuitry. See the i.MX 6Dual/6Quad reference manual
(IMX6DQRM) for details on the power tree scheme recommended operation.
NOTE
The *_CAP signals should not be powered externally. These signals are
intended for internal LDO or LDO bypass operation only.
4.3.1 Digital Regulators (LDO_ARM, LDO_PU, LDO_SOC)
There are three digital LDO regulators (“Digital”, because of the logic loads that they drive, not because
of their construction). The advantages of the regulators are to reduce the input supply variation because of
their input supply ripple rejection and their on die trimming. This translates into more voltage for the die
producing higher operating frequencies. These regulators have three basic modes.
• Bypass. The regulation FET is switched fully on passing the external voltage, DCDC_LOW, to the
load unaltered. The analog part of the regulator is powered down in this state, removing any loss
other than the IR drop through the power grid and FET.
• Power Gate. The regulation FET is switched fully off limiting the current draw from the supply.
The analog part of the regulator is powered down here limiting the power consumption.
• Analog regulation mode. The regulation FET is controlled such that the output voltage of the
regulator equals the programmed target voltage. The target voltage is fully programmable in 25 mV
steps.
Optionally LDO_SOC/VDD_SOC_CAP can be used to power the HDMI, PCIe, and SATA PHY's through
external connections.
For additional information, see the i.MX 6Dual/6Quad reference manual (IMX6DQRM).
4.3.2 Regulators for Analog Modules
4.3.2.1 LDO_1P1 / NVCC_PLL_OUT
The LDO_1P1 regulator implements a programmable linear-regulator function from VDD_HIGH_IN (see
Table 6 for minimum and maximum input requirements). Typical Programming Operating Range is 1.0 V