User manual

LPC3250 Developer’s Kit v2 - User’s Guide
Page 44
Copyright 2013 © Embedded Artists AB
GPIO23
HICORE / LCDVD17
LCD databit 17
GPIO24
U1_TX
Connects to UART multiplexing (TxD); further to LCD
expansion connector, serial expansion connector, RF
module, RS232 and RS422/485.
GPIO25
U1_RX
Connects to UART multiplexing (RxD); further to LCD
expansion connector, serial expansion connector, RF
module, RS232 and RS422/485.
GPIO26
USB_VBUS_CTRL
Connects to USB2 VBUS power enable.
GPIO27
GPO_17
Connects to USB2-up LED (active low).
GPIO28
GPO_20
Connects to USB2-connect functionality (for USB device
operation).
GPIO29
SPI1_CLK
SPI-SCK. Connects to LCD expansion connector via buffer.
Connects to serial expansion connector.
GPIO30
GPO_04
SPI-SSEL. Connects to LCD expansion connector.
GPIO31
SPI1_DATIN
SPI-MISO. Connects to LCD expansion connector.
Connects to serial expansion connector.
GPIO32
SPI1_DATIO
SPI-MOSI. Connects to LCD expansion connector via
buffer.
Connects to serial expansion connector.
GPIO33
GPO_05
Connects to LCD expansion connector (GPIO function).
GPIO34
GPO_11
Connects to LCD expansion connector (GPIO function,
touch controller spi-ssel).
GPIO35
TS_XP
No special usage on OEM Base Board.
GPIO36
TS_YP
No special usage on OEM Base Board.
GPIO37
AIN0
Connects to serial expansion connector.
GPIO38
AIN1
Connects to serial expansion connector.
GPIO39
AIN2
Connects to trimming potentiometer.
GPIO40
GPO_00
Connects to speaker output on AOUT signal. A PWM
modulated signal can generate audio signals.
I2C-SDA
I2C1_SDA
I2C-SDA0, connects to PCA9532, E2PROM, LM74, 3-axis
Accelerometer, audio codec, serial expansion connector, lcd
expansion connector.
I2C-SCL
I2C1_SCL
I2C-SCL0, connects to PCA9532, E2PROM, LM74, 3-axis
Accelerometer, audio codec, serial expansion connector, lcd
expansion connector.
USB1-DP/DM
Not connected
Connects to USB Host/OTG interface (USB #1)
USB2-DP/DM
USB_CONN_DP/DM
Connects to USB Host/Device interface (USB #2)
MCICLK
MCICLK
Connects to MCICLK on SD/MMC connector
MCICMD
MCICMD
Connects to MCICMD on SD/MMC connector
MCIPWR
GPO_01
Connects to MCIPWR on SD/MMC connector
MCIDAT0
MCIDAT0
Connects to MCIDAT0 on SD/MMC connector