Vlci Interface Connector - Data General AViiON Series Customer Documentation

VLCi Interface Connector

The VLCi controller provides a standard IEEE 802.3 local area network DTE
interface through a 15–pin sub–D connector. This connector accepts an Access Unit
Interface (AUI) cable. The AUI cable connects the computer to an external Media
Attachment Unit (MAU). The MAU contains the Ethernet transceiver and the
Media Dependent Interface (MDI) for connection to the physical network.
Figure C–9 shows the signals and pin numbers for the VLCi external connector.
Pin 15
Pin 8
Pin 1
Pin 9
VLCi connector to LAN
(female)
014–001867
Pin Circuit Name
1 CI–S
2 CI–A
3 DO–A
4 DI–S
5 DI–A
6 VC
7 CO–A
8 CO–S
9 CI–B
10 DO–B
11 DO–S
12 DI–B
13 VP
14 VS
15 CO–B
The connector shell acts as a protective ground
Figure C–9 VLCi Connector Signals
External Device Connector Pin Assignments
(Control In circuit shield)
(Control In circuit A)
(Data Out circuit A)
(Data In circuit shield)
(Data In circuit A)
(Voltage common)
(Control Out circuit A)
(Control Out circuit shield)
(Control In circuit B)
(Data Out circuit B)
(Data Out circuit shield)
(Data In circuit B)
(Voltage plus)
(Voltage shield)
(Control Out circuit B)
C-13