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MII Connector Pin Assignment
Contact MII Signal Signal Name Contact MII Signal Signal Name
20 +5 V Voltage 40 +5 V Voltage
RS-232 (DB9) Pin Specification
The RS-232 serial port of the hub uses a 9-pin female connector. The port can
be connected to a VT-100 type terminal, a PC, or a workstation emulating a
VT-100 terminal. The connection can be either local, or remote through a
modem. For a remote connection, a modem cable with a 9-pin male connector
on the hub side is needed. The figures below show the connections necessary
for local and remote connection to 9-pin and 25-pin RS-232 devices.
Terminal
/
P
C
S
erial Port
(DTE, DB-9)
C
onsole Port
(DCE, DB-9)
-(9)
RXD (2)
TxD (3)
DTR (4)
SG (5)
DSR (6)
RTS (7)
CTS (8)
DCD (1)
-(9)
RXD (2)
TxD (3)
DTR (4)
SG (5)
DSR (6)
RTS (7)
CTS (8)
DCD (1)
Local Connection to 9-Pin Serial Port