21
3.14 External Switches and Indicators
There are several external switches and indicators for
monitoring and controlling your CPU board. All the functions
are in the CN23 connector.
CN23 Pin Assignment and Functions :
2 4 6 8 10 12
1 3 5 7 9 11
FUNCTION PIN
NO.
DESCRIPTION
2 SPK
SIGNAL
4 N/C
Jump for
Buzzer
6 N/C
SPEAKER
8 VCC
10 POWER
GOOD
RESET
12 GROUND
9 LED+
HDD LED
11 LED-
1 LED+
POWER LED
3 LED-(GROUND)
5 Reserved
Reserved
7 GROUND
3.15 PS-ON Connector
This connector is used to control the ATX power supply.
•
CN27 : PS-ON Connector (refer to Appendix D for
detail )
1 2 3
PIN NO.
DESCRIPTION
1 Ground
2 PS-ON
3 +5V
Standby
22
3.16 LAN RJ45 Connector
ROCKY-3742
EVFG/EVF/EV
is equipped with dual Ethernet
Controllers (Intel 82559 10/100Mbps and NS DP83820 Gigabit).
You can connect it to your LAN through RJ45 LAN connector. The
pin assignments are as follows:
•
CN16 LAN1 RJ45 Connector (10/100)
PIN NO. DESCRIPTION
PIN NO.
DESCRIPTION
1 TX+
7 N/C
2 TX-
8 N/C
3 RX+
9 Speed
+
4 N/C
10 Speed
-
5 N/C
11 Active
+
6 RX-
12 Active
-
•
CN30 LAN2 RJ45 Connector (Giga LAN)
PIN NO. DESCRIPTION
PIN NO.
DESCRIPTION
1 TA+
7 TD+
2 TA-
8 TD-
3 TB+
9 Speed
1000M+
4 TC+
10 Speed
1000M-
5 TC-
11 Active
+
6 TB-
12 Active
-
•
CN17: Gigabit LAN chip (U55) FAN Connector
PIN NO.
DESCRIPTION
1 Ground
2 +5V
