ETX-270 User Manual 1.3
www.diamondsystems.com
Page 9
2.3
Bus and Interface Connector Summary
The ETX-N270 has seven interface connectors, as listed in the tables below. With the exception of SDVO1, these
connectors are defined in accordance with the ETX 3.0 Computer-on-Module (COM) Specification. Signal
functions relating to all of
the module’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
SDVO1
Bottom
30
Serial Digital Video Out (SDVO) port