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 a Maxim MAX1588 device, which
supplies 5 V power at up to 1.2 A. 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. 0, 08/2015
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Freescale Semiconductor, Inc.
