User`s guide

LPC3250 Developer’s Kit - User’s Guide
Page 19
Copyright 2010 © Embedded Artists AB
JTAG connector
19
JTAG_TDI
JTAG_TDI
Connected to standard 20 pos (2x10 pin)
JTAG connector
20
JTAG_TDO
JTAG_TDO
Connected to standard 20 pos (2x10 pin)
JTAG connector
21
V3A
VDDA
Positive reference for trimming potentiometer
22
VREF
NC (can be VCCA)
Can be connected VDDA(V3A)
23
VSSA
VSSA
Negative reference for trimming potentiometer
24
GND
GND
GND
25
P2.0
GPO_10
LCDPWR signal, power enable for QVGA
display. Also connects to ETM pads, if
connector mounted.
ETM cannot be
used
26
P2.1
GPO_12
LCDLE signal. Not used by design. Also
connects to ETM pads, if connector mounted.
ETM cannot be
used
27
P2.2
GPO_13
LCDDCLK signal, dot clock for QVGA display.
Also connects to ETM pads, if connector
mounted.
ETM cannot be
used
28
P2.3
GPO_15
LCDFP signal, vsync for QVGA display. Also
connects to ETM pads, if connector mounted.
ETM cannot be
used
29
P2.4
GPO_16
LCDENAB signal, data enable for QVGA
display. Also connects to ETM pads, if
connector mounted.
ETM cannot be
used
30
P2.5
GPO_18
LCDLP signal, hsync for QVGA display. Also
connects to ETM pads, if connector mounted.
ETM cannot be
used
31
P2.6
P0.2
LCD databit 4. Also connects to ETM pads, if
connector mounted.
ETM cannot be
used
32
P2.7
P0.3
LCD databit 5. Also connects to ETM pads, if
connector mounted.
ETM cannot be
used
33
P2.8
P0.4
LCD databit 6. Also connects to ETM pads, if
connector mounted.
ETM cannot be
used
34
P2.9
P0.5
LCD databit 7. Also connects to ETM pads, if
connector mounted.
ETM cannot be
used
35
P2.10
GPI_01
Connected to push-button (for enabling
bootloader during reset or EINT0 input). Also
connects to LED (active low).
Connects to USB-to-serial bridge (for
automatic ISP functionality)
Enable UART
booting by pulling
signal low at reset
36
P2.11
U7_HCTS
LCDCLKIN, an external clock signal can be
feed to this pin.
37
VCC
VCC
38
GND
GND
39
VCC
VCC
40
GND
GND
41
P0.29-USBA-DP
NC (can be
KEYROW0)
Connects to USB device/OTG interface
USB Device/OTG
i/f not used
42
P0.31-USBB-DP
USB_CONN_DP
Connects to USB host interface
USB Host interface
is connected to the
LPC3250
43
P0.30-USBA-DM
NC (can be
Connects to USB device/OTG interface
USB Device/OTG