2.5.1 Mini-PCIe card
Starting Rev. B version of the LS1043ARDB, support can be added for the wider QCA
WAVE2 card. To add this support, perform the following steps:
1. Clean up the top and bottom layer parts on the mini-PCIe card area.
2. Pour ground copper on the top and bottom of the mini-PCIe card area.
3. Add support for the additional PA voltage (+5 V or +3.3 V) on the mini-PCIe slot
(P5) reserved pins, as shown in the table below.
Pin number on P5 Standard pin definition on
mini-PCIe slot
LS1043ARDB Jumper settings
(J22: 1-2)
Jumper settings
(J22: 2-3)
39 Reserved pin 3.3 V
41 Reserved pin 3.3 V
45 Reserved pin +VPA +3.3 V +5.0 V
47 Reserved pin +VPA
49 Reserved pin +VPA
51 Reserved pin +VPA
2.6 USB interface
The LS1043A processor has three integrated USB 3.0 controllers (USB1, USB2, and
USB3) that allow direct connection to the USB ports with appropriate protection circuitry
and power supplies. Each USB port is powered by an NXP NX5P3090UK device, which
is an adjustable current-limited power switch that supplies 5 V power. The power enable
and power-fault-detect pins are connected to the LS1043A processor via CPLD for
individual port management.
The figure below shows the LS1043ARDB USB architecture.
USB interface
QorIQ LS1043A Reference Design Board Reference Manual, Rev. 4, 11/2017
28 NXP Semiconductors
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