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ETX-945 User Manual 1.00 www.diamondsystems.com Page 9
2.3 Bus and Interface Connector Summary
The ETX-945 has six interface connectors, as listed in the tables below. These connectors are defined in
accordance with the ETX 3.0 Computer-on-Module (COM) Specification. Signal functions relating to each of the
ETX-945’s interface connectors are discussed in greater detail in Section 4 of this document.
2.4 ETX Bus Connectors
Connector
Location
Pins
Function
ETX1
Bottom
100
PCI bus, USB ports, audio interface, serial IRQ
ETX2
Bottom
100
ISA bus
ETX3
Bottom
100
VGA, LCD (LVDS), TV video, serial ports, PS2 keyboard
and mouse, parallel port, floppy interface
ETX4
Bottom
100
IDE ports, Ethernet, power supply control, speaker, RTC
(real time clock), backup battery input, I
2
C bus, SM bus
2.5 Other Interface Connectors
Connector
Location
Pins
Function
SATA1
Top
7
Serial ATA channel 1
SATA2
Top
7
Serial ATA channel 2