Datasheet

NXP Semiconductors
UM11035
LPCXpresso boards for LPC546xx/LPC540xx/LPC54S0xx families of
MCUs
UM11035
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© NXP B.V. 2017-2019. All rights reserved.
User manual
Rev. 2.1 — 7th January 2019
9 of 36
Circuit ref
Description
Section
JP7
(not
installed by
default)
JP7 may be fitted to provide a convenient way to enable/disable
the reset signal to/from the expansion connectors. Solder jumper
JS28 should be removed if JP7 is to be used.
See
schematic
JP8
This set of jumpers is used to configure 3.3V vs 1.8V board
configurations. OM13092 boards are all 3.3V, so these jumpers
should not be changed from the default.
JP8 is not present on Revision C boards (functionality has been
replaced by zero ohm links).
See
schematic
JP9
USB host Vbus selection
Note that only one of USB0 or USB1 can be configured as a USB
host port at any given time (this is a board restriction, not a
limitation of the LPC546x8/540xx.)
Install jumper in position 1-2 for USB1 (High Speed) to provide
Vbus (i.e. enable USB host capability) (Default)
Install jumper in position 2-3 for USB0 (Full Speed) to provide Vbus
(i.e. enable USB host capability)
7.2
JP10
USB host power control selection
This jumper selects routing of USB port power and overcurrent
detect from either the USB0 or USB1 ports of the
LPC546x8/540xx. Note that only one of USB0 or USB1 can be
configured as a USB host port at any given time (this is a board
restriction, not a limitation of the LPC546x8/540xx.)
Leave open when using USB1 (High Speed) as a USB host
(Default)
Install jumper for USB0 (Full Speed) to provide Vbus (i.e. enable
USB host capability)
7.2
JP11 &
JP12
USB0 host / Ethernet TXD/RXD selection
Due to sharing of pin functionality on this development board, it is
not possible to support the Ethernet port and USB0 overcurrent
feature simultaneously. For both JP11 and JP12:
Install jumper in position 1-2 to enable Ethernet (Default)
Install jumper in position 2-3 for USB0 (Full Speed) (i.e. enable
USB host capability)
7.2
JP13
USB0 host / Ethernet selection
Due to sharing of pin functionality on this development board, the
P4-7 port pin is used for either the USB0 port or as a general
purpose signal on the expansion connector.
Install jumper in position 1-2 to route P4-7 to the expansion
connector.
Install jumper in position 2-3 for USB0 (Full Speed) (i.e. enable
USB host capability)
7.2, 7.6