Hardware implementation
Issue C
27
Hardware implementation
COM Express specification
The PCI Industrial Computer Manufacturers Group (PICMG) COM Express Module Base
Specification Revision 1.0 is used to define the primary mechanical and electrical
interconnects for the PROTEUS module design. A Type 1 connector pinout and an
Extended module mechanical format are used.
The Extended module mechanical footprint is intended for mobile systems and space
constrained stationary systems. Key features of the module include:
•
155mm x 110mm module size.
•
5mm and 8mm stack height options.
•
18mm ‘z’ height with heat spreader (with 5mm stack option).
Type 1 module pinout feature set
There are five connector pinout configurations defined in the COM Express Specification,
Type 1 through to Type 5, each with increasing complexity. A Type 1 pinout has been
selected as this best suits the functionality supported on the chipset.
A 220-pin high speed, high density, 0.5mm FH connector from Tyco Electronics is
specified for the COM Express Type 1 interface to the carrier board.
The table below summarises the feature set of the PROTEUS module:
System I/O
Type 1 COM Express
220-pin connector (# ports)
PCI Express lanes 0-5
4
LVDS video – 24bit
1
SATA port
2
HD Audio Digital Interface
1
USB 2.0 ports
4
LAN0 (10/100 Base-T min)
1
Express card support
2
LPC Bus
1
