Chapter 3
Power Supplies and CPLD Controller
The LS1043ARDB power supplies provide all voltages necessary for the correct
operation of the LS1043A device, DDR4, CPLD, Aquantia PHY, Realtek PHY, and all
onboard peripherals.
The LS1043ARDB has an onboard CPLD that is used to configure the board for the
required functionality, for example, managing system power and reset sequencing and
controlling signal muxing/demuxing.
3.1
Power supply block diagram
The figure below shows the LS1043ARDB power supply block diagram.
QorIQ LS1043A Reference Design Board Reference Manual, Rev. 4, 11/2017
NXP Semiconductors 33
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