ET100A LAN-WAN Bridge
20
WAN Port Pin Assignment
The
following
tables
give
the
pin,
circuit,
function
and
signal
direction
as
seen
on
the
ET100A's
DB25M
connector
for
each
of
the
selectable
interfaces.
RS
‐
232
and
RS
‐
530
connections
may
be
made
directly.
Adapter
cables
are
required
to
match
the
physical
connectors
for
V.35
(MB34),
X.21
(DB15)
and
RS
‐
449
(DB37).
a.
V.24/RS
‐
232
INTERFACE
PIN
ASSIGNMENT
PIN CIRCUIT
FUNCTION
DIRECTION EIA
1
FGND
Protective
GND
AA
2
TD
Transmit
data
OUT
BA
3
RD
Receive
data
IN
BB
4
RTS
Request
to
send
OUT
CA
5
CTS
Clear
to
send
IN
CB
6
DSR
Data
set
ready
IN
CC
7
GND
Signal
ground
AB
8
DCD
Carrier
detect
IN
CF
15
TC
Transmit
clock
IN
DB
17
RC
Receive
clock
IN
DD
20
DTR
Data
term
ready
OUT
CD
24
XTC
DTE
xmit
clock
OUT
DA
Table
8:
RS
‐
232
Interface
Pin
Assignment
SW2
‐
1/2
ON/ON
Содержание ET100A
Страница 1: ...ET100A ver2 Synchronous WAN Ethernet Bridge 10 100Base TX Ethernet over V 35 X 21 RS 232 530 449 ...
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Страница 10: ...ET100A LAN WAN Bridge Unit Detail 13 11 10 8 6 7 9 5 12 4 2 3 1 Figure 2 ET100A Unit Detail 10 ...
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