Medium-Speed Full-Duplex Interface; Low-Speed Full-Duplex-Line Set Ib - IBM 3704 Reference Manual

I BM 3704/3705
Modem
Line Set 1 B
B02 Transmitted Data Received Data 2
. .
-
B05 Clear to Send
5
- -
B06
Request to Send
4 ..
--
BOS Data Set Ready
-
Transmit Line
Low-Order Address
003 Data Terminal Ready
DOS Signal Ground
7
..
-
J03 Data Terminal Ready
Data Set Ready 20
. .
--
Line Set 1 B
J02 Receive Signal Detector
s
-
G04
Received Data
Transmitted Data 3
Receive Line
-
-
High-Order Address
GOS
Data Set Ready
Data Terminal Ready 6
-
-
J05
Ring Indicator 22 -
Figure 3. Low-Speed Full-Duplex-Line Set lB
Medium-Speed Full-Duplex Interface
The medium-speed full-duplex interface provides an EIA RS-232C/V.24 CCITT
interface for simultaneous transmit and receive operations at speeds up to 7200
bps. The interface lines (Line Set lH) are described in "EIA RS-232C/V.24
Interface" and are shown in Figure 4.
802 Transmit Data
2 ..
805 Clear to Send 5
._ 806 Request to Send
4
..... BOS Transmit Data Set Ready
- J03 Receive Data Terminal Ready
)
_ B10 Transmit Clock
15
D03 Transmit Data Terminal Ready
20
IBM 3705
D05 Ring Indicator
22--..
Modem
Line Set 1 H
-
D06 Data Rate Select
23_ ..
D10 New Sync
14 •
D11 Modem Wrap
1a:
.....
G04 Receive Data _Mark
3
- GOS Receive Data Set Ready
6
~
-
G13 Receive Clock
17
......._
-
J02 Receive Signal Detect
8
.....
-
Figure 4. Medium-Speed Full-Duplex Line Set lH
Communication Interfaces 11