User`s guide

LPC3250 Developer’s Kit - User’s Guide
Page 25
Copyright 2011 © Embedded Artists AB
4.3 Jumpers
The QVGA Base Board has a number of jumpers in order to be able to connect/disconnect and fully
utilize all functionality of the LPC3250 and the boards. Figure 2 illustrates all jumpers and explains to
what part of the design they belong.
Figure 2 – QVGA Base Board Jumpers
USB OTG/device
J25
Connect or
disconnect ISP1301
signals
NOT USED
USB device connect
J37
Top pos: always enable
Lower pos: enable via
P0.14
NOT USED
UART#0 and
ISP Functionality
J14, in order from top
to bottom:
TxD0
RxD0
P2.10
RESET
Analog Input
J11
Connect V3A to
VREF and
trim.pot. to
analog AD0.2
Accelerometer
J12
Connect xyz to
AD0.0-AD0.2
Enable ETM
J10
NOT USED
No of disp. colors
J30/J31/J32
All to left: 16-bit
color interface to
display
All to right: 24-bit
color interface
Enable/Disable
JTAG, J6
NAND Busy and Ethernet
PHY
J7
Top: Connect Nand busy
signal to P2.2
Bottom: Connect Ethernet
PHY PD–signal to P2.19
NOT USED
LCD Enable
J33
Enable power
switch to
display
Int/ext
display
J34/J35
Select
internal or
external
display (for
SPI bus and
interrupt)
RS232 UART
J20/J23/J24
Connect RS232 interface
to UART #1 or RxD/TxD
on UART #3.
USB host
J27
Connect or
disconnect signals
IrDA
Shutdown
J22
CAN/IrDA
J18/J19
Connect
either CAN or
IrDA to P0.0-
P0.1
CAN/IrDA
J16
Connect P0.4-
P0.5 to CAN
NOT USED
Backlight Shutdown
J29
Inserted: Shutdown
backlight
Open: Enable backlight
control