Specifications

Multi SIeve Product Reference Menuel Section 2
SERIAL 1/0 CONTROLLER
The Multi SIeve provides two independent aerial IIO channels per
CPU, both contained in one seriel 1/0 controller, tho Signetica
2681 Dual Aaynchronoua Receiver/Transmitter (DUART). The DUART
containa two internal, independent baud rate generators, capable
o£ producing 18 user selectable baud rates. Level conversion to
EIA RS-232 or RS-422 level is provided by an external circuit
aa ••• bly called the PS-NET.
SERIAL CHANNEL CONNECTORS
Connectors for each serial liD channel are located aerOS8 the top
o£ the Multi Slave board (see figure 1-1 £or exact place.ent).
Each connector has the following pinout:
PIN NO. SIGNAL NAME
DIRECTION
-------
-----------
---------
1
DCD
Data
Carrior Detect
input
2
DSR
Data Set Ready
input
•
3
•••
see note below
input/output
4
RXD
Receive Data
input
3
CTS
Clear to Send
input
6 TXD
Transtlit Data
output
7
RTS
Request to Send
output
8
DTR
Data Terminal
Ready
output
9
CLK
Tx/Rx Clock
input/output
10
GND
Signal
Ground
ground
11
N1C
12
+16
VDC
supply
voltage
13
-16 VDC
supply voltage
14
+5
VDC
supply
voltage
• On channel A, this term is RNG (ring detect) and may be
connected to the ring detect line on a Dodea. This line has no
connected on channel B.
Tabla 2-4 Serial 110 Cable Connector
SERIAL IIO CONTROLLER Page 2-11