User manual

Display Expansion Board - User’s Guide
Page 11
Copyright 2012 © Embedded Artists AB
(for power and oscillator control). If the DS1086 programmable spread spectrum oscillator is mounted
it is controlled via I2C. The SPI interface is for the resistive touch screen controller.
Interface
conn.
(J1)
Usage
TFT5:6:5
mode
(primary
mode)
SJ1, pos
1-2
mounted.
R22 not
mounted.
TFT4:4:4
mode
SJ1, pos
1-2
mounted.
R22 not
mounted.
TFT8:8:8 mode
(Not directly supported by
OEM Base Board)
SJ1, pos 2-3 mounted. R3,
R4 and R22 mounted with
0R resistors.
1
Ground (GND)
2
Ground (GND)
3
Currently not used.
RED0 (LSB)
Requires soldering of R3.
4
Currently not used.
RED1
Requires soldering of R4.
5
Currently not used.
RED2
6
Currently not used.
RED3
7
LCD_DV4 signal from LPC LCD controller.
RED1
RED0
(LSB)
RED4
8
LCD_DV5 signal from LPC LCD controller.
RED2
RED1
RED5
9
LCD_DV6 signal from LPC LCD controller.
RED3
RED2
RED6
10
LCD_DV7 signal from LPC LCD controller.
RED4
(MSB)
RED3
(MSB)
RED7 (MSB)
11
Ground (GND)
12
Ground (GND)
13
I2C-SCL signal
GREEN0 (LSB)
SJ2 must have pos 2-3
connected instead of 1-2.
I2C-SCL signal must be
supplied externally via J2
instead.
14
I2C-SDA signal (bidirectional pin)
GREEN1
SJ3 must have pos 2-3
connected instead of 1-2.
I2C-SDA signal must be
supplied externally via J2
instead.
15
LCD_DV10 signal from LPC LCD controller.
GREEN0
(LSB)
GREEN2
16
LCD_DV11 signal from LPC LCD controller.
GREEN1
GREEN3
17
LCD_DV12 signal from LPC LCD controller.
GREEN2
GREEN0
(LSB)
GREEN4