IBASE MB945 User Manual
Page 24
INSTALLATIONS
COM3,COM4: COM3, COM4 Serial Ports(RS232)
COM3 and COM4 are COM pin-header connectors.
Signal Name
Pin #
Pin #
Signal Name
DCD, Data carrier detect
1
6
DSR, Data set ready
RXD, Receive data
2
7
RTS, Request to send
TXD, Transmit data
3
8
CTS, Clear to send
DTR, Data terminal ready
4
9
RI, Ring indicator
GND, ground
5
10
Not Used
J1: Wake On LAN Connector
J1 is a 3-pin header for the Wake On LAN function on the motherboard.
The following table shows the pin out assignments of this connector.
Wake On LAN will function properly only with an ATX power supply
with 5VSB that has 1A.
Pin #
Signal Name
1 +5VSB
2 Ground
3 LAN
Wakeup
J2: SPDIFI/ SPDIFO Connector (Reserved)
Pin #
Signal Name
1 SPDIF/I
2 Ground
3 SPDIF/O
4 Ground
J3, J5: ISA Slots
ISA slot does not support ISA master & DMA access function, but only
ISA peripheral cards.
J4: SPI Debug Tools Port
(Factory use only)
20
MB945 User’s Manual