User manual

LPC3250 Developer’s Kit v2 - User’s Guide
Page 47
Copyright 2013 © Embedded Artists AB
GPIO93
U3_DSR / U2_RX
Can be connected to RS232 interface
GPIO94
GPI_05 / U3_DCD
Can be connected to RS232 interface
GPIO95
U3_CTS / U2_CTS
Can be connected to RS232 interface
GPIO96
U3_RX
Can be connected to RS232 interface
GPIO97
U3_TX
Can be connected to RS232 interface
BD0-BD15
EMC_D0-EMC_D15
Connects to parallel NOR flash and 16-bit register.
BA0-BA23
EMC_A0-EMC_A23
The address bus, buffered signals from OEM Board.
Connects to parallel NOR flash and 16-bit register.
BOE
EMC_OE
OE, buffered signal from cpu board . Connects to parallel
NOR flash.
BWE
EMC_WE
WE, buffered signal from cpu board. Connects to parallel
NOR flash and 16-bit register.
BBLS0
EMC_BLS0
BLS0 controls lower 8 bits of external memory databus (16-
bit parallel register). Connects to 16-bit register.
BBLS1
EMC_BLS1
BLS1 controls upper 8 bits of external memory databus (16-
bit parallel register). Connects to 16-bit register.
BCS0
EMC_CS0
No special usage on OEM Base Board.
BCS1
EMC_CS1
No special usage on OEM Base Board.
BCS2
EMC_CS2
CS2, chip select for parallel NOR flash.
BCS3
EMC_CS3
CS3, chip select for 16-bit regsiter.
VBAT
VBAT
Super-capacitor on vbat signal
ALARM
ONSW
Connected to alarm-LED (active high)
WP_NAND
GPO_19
Connected to NAND FLASH WriteProtect input internally on
LPC3250 OEM board
VREF
Not connected
VDDA,
VSSA
VDDA,
VSSA
Used to generate reference voltage for trimpot (analog
inputs)
JTAG signals
JTAG signals
Connected to JTAG connectors
JTAG_DBGEN
DBGEN
RESET
RESET_IN
Connects to RESET push-button and USB-to-serial bridge
(for automatic service mode functionality)
RSTOUT
RESOUT
Connects to RESET LED indicator.
Used to reset PCA9532, UDA1380, FT232RL, MIC2555, RF
module and LCD expansion connector.