14 NETernity* RM921N / RM921ND Hardware Reference Manual
Publication No. 597-0000000013-000 Rev. F
2.5.3
Serial Console Port
The baseboard provides a serial port through an RJ45 with integrated LEDs in the
front panel (P13). This port is used for serial communication with the management
board.
Figure 2-2 Serial Console Port
Table 2-2 Serial Console Port (P13) Pin Descriptions
Pin No. Name Description
1, 2
N/C
No Connection
3
GND
Circuit Ground
4
RXD0 Receive Data
5
TXD0 Transmit Data
6
GND
Circuit Ground
7, 8
N/C
No Connection
9, 10
CGND Chassis Ground
Table 2-3 Serial Console Port (P13) LEDs
LEDs
Indication
DS25[GRN] ON: Power Good: Board not in reset
OFF: Board in reset
DS26[GRN] Not Used
Figure 2-3
Serial Console Port LEDs’ Location
