Power Management; Watchdog - Congatec Qseven conga-QMX6 User Manual

Nxp i.mx6 arm cortex a9 processor with ultra low power consumption

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Inrush and Maximum Current Peaks on VCC_5V_SB and VCC

The inrush-current on the conga-QMX6 VCC_5V_SB power rail can go up as high as 2.3A for a maximum of 100µS. Sufficient decoupling

capacitance must be implemented to ensure proper power-up sequencing.

The maximum peak-current on the conga-QMX6 VCC (5V) power rail can be as high as 3.0A. This requires that the power supply be properly

dimensioned.

Note

For more information about power control event signals refer to the Qseven

5.15

Power Management

Onboard the conga-QMX6 is a 14 channel configurable Power Management Integrated Circuit (PMIC). The PMIC provides a cost effective

programmable power management solution for a wide range of applications. This high efficiency, configurable power management IC is

designed to work seamlessly with NXP

(PMU) to reduce supply connections. The PMIC complements the processor's internal regulators in providing a complete and simple way to

supply voltage domain with different voltages when needed.

The PMIC features four bulk regulators (up to six independent outputs), one boost regulator, six general purpose LDOs, one switch/LDO

combination and a DDR voltage reference to supply voltages for the application processor and peripheral devices.

With integrated memory power, RTC supply and additional bulk and linear regulators to power system peripherals, multiple point of power

supply across the PCB is drastically reduced.

5.16

The watchdog timer (WDOG) protects against system failures by providing a method of escaping from unexpected events or programming

errors. The software must periodically service the watchdog timer once the WDOG is activated. Without the servicing, the timer times out.

The NXP

i.MX6 processor on the conga-QMX6 offers two watchdog timers - a watchdog timer integrated within the ARM Cortex A9 platform

and a TrustZone watchdog timer.

processors. The NXP

i.MX6 cortex A9 processor uses advanced integration Power Management Unit

specification.

QMX6m12

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