ET100A LAN-WAN Bridge
22
c.
RS
‐
449/RS
‐
530
INTERFACE
PIN
ASSIGNMENT
PIN CIRCUIT
FUNCTION
DIRECTION CCITT
1
FGND
Protective
GND
101
2
SD(A)
Xmit
data
A
OUT
103
3
RD(A)
Receive
data
A
IN
104
4
RS(A)
Request
to
send
A
OUT
105
5
CS(A)
Clear
to
send
A
IN
106
6
DM(A)
Data
set
ready
A
IN
107
7
GND
Signal
ground
102
8
RR(A)
Data
carrier
detect
A
IN
109
9
RT(B)
Receive
clock
B
IN
115
10
RR(B)
Data
carrier
detect
B
IN
109
11
TT(B)
DTE
Xmit
clock
B
OUT
113
12
ST(B)
Xmit
clock
B
IN
114
13
CS(B)
Clear
to
send
B
IN
106
14
SD(B)
Xmit
data
B
OUT
103
15
ST(A)
Xmit
clock
A
IN
114
16
RD(B)
Receive
data
B
IN
104
17
RT(A)
Receive
clock
A
IN
115
19
RS(B)
Request
to
send
B
OUT
105
20
TR(A)
Data
terminal
ready
A
OUT
108
22
DM(B)
Data
set
ready
B
IN
107
23
TR(B)
Data
terminal
ready
B
OUT
108
24
TT(A)
DTE
Xmit
clock
A
OUT
113
Table
10:
RS
‐
449/RS
‐
530
INTERFACE
PIN
ASSIGNMENT
SW2
‐
1/2
ON/OFF
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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