CPU-1440 Dev Kit user manual
Issue A
12
Expansion buses
PC/104-Plus bus interface
The PC/104-Plus bus interface supports PCI local bus compatible peripherals, as
defined in the PCI local bus specification revision 2.2. This version of the PCI bus is
intended as a 32-bit running at 33MHz (as specified in the PC/104-Plus specification
version 2.0).
A standard stack-through connector for the PCI bus (4x30-pin, 2mm pitch) is used for
this interface.
The CPU-1440 board supplies the 3.3V and VIO pins with a 3.3V voltage. Total
connected boards consumption must be less than 2.5A.
+12V, -12V and -5V are not available, if you require it, it must be supplied directly to the
PC/104-Plus.
PC/104 bus interface
PC/104 bus interface supports 16-bit ISA compatible peripherals.
Standard 64+40 way 0.1” stack-through connectors are used. If you are using a PC/104
card that requires +5V, this is automatically supplied via the PC/104 header. If
necessary, +12V, -12V and -5V must be supplied directly to the PC/104 stack.
Graphics support
The integrated 2D/3D graphics controller includes a dedicated 8MB graphics memory,
and supports hardware accelerated graphics display and video processing capabilities.
The maximum resolution is 1280x1024.
The Silicon Motion SM722 controller provides:
•
an analogue VGA interface on a 10-pin header (JP2).
•
a single channel 18-bit LVDS interface on a 26-pin 2mm header (JP4).
•
a 18-bit TFT interface on a 30-pin FPC header (JP1).
USB support
The CPU-1440 supports up to four USB 2.0 high-speed root ports. USB 2.0 allows
transfers up to 480 Mb/s. Common modes chokes coils are added to the USB data
lines to improve signal integrity. Power distribution switches are used for every USB
ports to provide 500 mA current-limited power supply.
USB boot is not supported.
