DI-2621 Router
~ positive
phase
20 ECLK0A-
~
First group internal timer outputs
negative phase
DTE
→
DCE
，
V35
21
~
First group internal timer outputs
positive phase
DTE
→
DCE
，
V35
22 ECLK0B-
~
irst group internal timer outputs
negative phase
DTE
→
DCE
，
V35
23
TXC0+
First group sends positive phase of
timer
DTE
←
DCE
，
V35
24
TXC0-
First group sends negative phase of
timer
DTE
←
DCE
，
V35
25
RXC0+
First group receives positive phase of
timer
DTE
←
DCE
，
V35
26
RXC0-
First group receives negative phase of
timer
DTE
←
DCE
，
V35
27
RXD0+
First group receive data positive phase
DTE
←
DCE
，
V35
28
RXD0-
First group receives data negative
phase
DTE
←
DCE
，
V35
29
~
Second group internal timer outputs
positive phase
DTE
→
DCE
，
V35
30 ECLK1B-
~
Second group internal timer outputs
negative phase
DTE
→
DCE
，
V35
31 ECLK1A-
~
Second group internal timer outputs
negative phase
DTE
→
DCE
，
V35
32
~
Second group internal timer outputs
positive phase
DTE
→
DCE
，
V35
33
J0CD
First group carrier detect
DTE
←
DCE
，
V28&V35
34
J0DSR
First group data circuit devices ready
DTE
←
DCE
，
V28&V35
35
J0CTS
First group permitted to transmit
DTE
←
DCE
，
V28&V35
36
J0RXD
First group data receiving
DTE
←
DCE
，
V28
37
J0TXC
First group interface transmitting clock
DTE
←
DCE
，
V28
38
J0RXC
First group interface receiving clock
DTE
←
DCE
，
V28
39
CLK232-0
First group internal clock output
DTE
→
DCE
，
V28
40
CLK232-0
First group internal clock output
DTE
→
DCE
，
V28
41
J0TXD
First group data transmitted
DTE
→
DCE
，
V28
42
J0RTS
First group requests transmitting
DTE
→
DCE
，
V28&V35
43
J0DTR
First group data terminal ready
DTE
→
DCE
，
V28&V35
45
GND
Signal
grounded
DTE and DCE public signal
grounded
47
TXD1+~
Second group sends data positive
phase
DTE
→
DCE
，
V35
48
GND
Signal
grounded
DTE and DCE public signal
grounded
49 PORTMO
DE0
First group interface mode selection
used to choose V28 or V35
50
TXD1-~
Second group sends data negative
phase
DTE
→
DCE
，
V35
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