Epson ETX-945 User Manual
Page 29
ETX-945 User Manual 1.02
www.diamondsystems.com
Page 29
4.4.2
Ethernet port
The ETX-945
’s 10/100Mbps Ethernet LAN interface signals on connector ETX4 require the use of an external 1:1
transformer. The ETX 3.0 specification provides further details regarding the transformer
’s requirements.
Signal Name
Signal Function
Direction
TXD#, TXD
Transmit data differential pair
Out
RXD#, RXD
Receive data differential pair
In
ACTLED#
Data transmit/receive activity LED (on = data activity
present)
Out
LILED#
Link Integrity LED (on = link valid)
Out
SPEEDLED#
Speed LED (on = 100Mbps, off = 10Mbps)
Out
4.4.3
Power control and management
These pins support various power management and control functions,
in conjunction with the board’s ACPI BIOS
functionality and system management embedded controller.
Signal Name
Signal Function
Direction
PWGIN
Power good input (power supply is ready)
In
5V_SB
+5V +/- 5% DC power input for suspend mode
In
PS_ON#
Signals power supply to remove all power except 5V_SB
Out
PWRBTN#
Power Button signal; supports ACPI Power Button function
In
RSMRST#
Resume Reset; resets internal power management logic
In
SMBALRT#
System Management Bus Alert from SM bus devices
In
BATLOW#
Battery low signal
In
GPE1#, GPE2#
General purpose power management event inputs
In
EXTSMI#
System management interrupt
In