User manual

15 GR-LEON4-ITX Development Board
User Manual
2.10 PS2 Keyboard/Mouse Interface
The GR-LEON4-ITX board provides two PS2 style interfaces with a standard PS/2 style
connector as represented in the figure below, and the logic inside the ASIC provides
controller cores for standard PS2 style a Mouse and Keyboard connections.
According the normal conventions for this interface, the top connector (green) is the Mouse
interface and the bottom connector (purple) is the Keyboard interface.
2.11 Serial Interface (RS232)
The GR-LEON4-ITX-BOARD, provides RS232 interface circuits and 10 pin headers for two
Serial interfaces with TXD/RXD pins.
The RS232 transceiver IC's on this board are SN75C3232 devices from Texas Instruments
which operate from a single +3.3V power supply.
The layout and pin ordering of the 10 pin headers is designed so that a simple 1-to-1 ribbon
cable connection can be made to a 'standard' Female D-Sub 9 pin type connector with a
standard pin-out for serial links.
© Aeroflex Gaisler AB August 2010, Rev. 0.3
Figure 2-7: DVI Video Interface
CH7301C
DVI CONTROLLER
CH7301C
DVI CONTROLLER
DVI-I FEMALE
ASIC
ASIC
TFT_LCD_CLK_P
TFT_LCD_DATA[11..0]
TFT_LCD_CLK_N
DVI_CLK_P & N
DVI_D0_P & N
TFT_LCD_HSYNC
TFT_LCD_VSYNC
VIDEO
INTERFACE
RED
BLUE
GREEN
HSYNC
VSYNC
TFT_LCD_DE
TFT_LCD_RESET
DVI_D1_P & N
DVI_D2_P & N
ANALOG
VGA
DIGITAL
VGA
Figure 2-8: PS/2 Interfaces
(one of 2 interfaces shown)
3.3V to 5V buffer
PS2CLK
PS2DATA
MINI-DIN 6 pin
5
3 4
2
6
1
DGND
+5V