Table 16. USB ports
USB port Connector type Location Supported modes
USB1 Type A Front panel
• Host mode: Jumper J31 is shorted (default mode)
• Device mode: Jumper J31 is open
USB2 Micro-AB Front panel
• Host mode: Jumper J33 is shorted
• OTG mode: Jumper J33 is open (default mode)
As described in the table above, operating modes for USB1 and USB2 ports are controlled through the J31 and J33 jumpers,
respectively.
The figure below shows the architecture of the LX2160ARDB USB interface.
10K
10
LX2160A
5V0
USB
3.0
type A
USB1_DRVVBUS
USB1_RESREF
USB1_PWRFAULT
USB1_VBUS
“USB1”
90W diff. imp.
USB1_D_[P,M]
USB1_ID
USB1_TX_[P,M]
USB1_RX_[P,M]
<=2A<=2A
USB1
NX5P3090
USB1
MODE
5V0
USB2_DRVVBUS
USB2_RESREF
USB2_PWRFAULT
USB2_VBUS
“USB2”
90W diff. imp.
USB2_DP,DM
USB2_ID
USB2_TXP,TXM
USB2_RXP,RXM
<=2A<=2A
USB2
NX5P3090
USB2
MODE
USB3.0
VERTI CAL
RIGHT-ANGLE
USB
3.0
micro-
AB
10K
10
NOTE: For new designs, insert a
30.1k ohm resist or in series with
USBx_VBUS. See LX2160ARDB
board errata E-00011 for details.
Figure 19. USB architecture
The USBx_DRVVBUS and USBx_PWRFAULT pins of each USB controller are connected to a programmable-current USB switch,
NX5P3090UK (from NXP), for individual port management. The USB switch is powered from +5 V USB power supply. The
USB1_DRVVBUS/USB2_DRVVBUS signal controls the VBUS drive for USB1/USB2 port. The USB1_PWRFAULT/
USB2_PWRFAULT signal gets power fault indications through the USB switch. The maximum allowed current consumption of a
USB connected device is 2 A per channel.
For new board designs based on the LX2160A processor, insert a 30.1 kΩ (±1%) resistor in series with
USB1_VBUS and USB1_VBUS each. For more details, see erratum E-00011 in
QorIQ LX2160A Reference Design
Board Errata
.
NOTE
Each USB connector has an LED nearby, USB1_5V and USB2_5V, which are active when the +5 V USB power supply is enabled.
NXP Semiconductors
LX2160ARDB Functional Description
QorIQ LX2160A Reference Design Board Reference Manual, Rev. 4, 07/2020
Reference Manual 32 / 116
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