Sun Microsystems SPARCstation 20, Service Manual

Page: 231 / 266

Appendix C System Board Connector Pinouts 207
AUI Connector
The AUI connector is the bottom connector in the stacked pair of 26-pin connectors
on the SPARCstation 20 system.
TABLE C-2
lists connector pin assignments and signal
descriptions for the parallel connector.
FIGURE C-2
AUI Connector
23
Shield
None GND
Shield
24
Shield
None GND
Shield
25
Shield
None GND
Shield
26
Shield
None GND
Shield
TABLE C-2
AUI Connector Pin Assignments
Pin Function I/O Level Signal Description
1 AUI_DO- O Analog Data out negative
2 I Analog Data out positive
3 AUI_CI- I Analog AUI collision negative
4 +12 VDC O DC Power
TABLE C-1
Parallel Connector Pin Assignments (Continued)
Pin Function I/O Level Signal Description
* Active low signal
13
26
1
14
13
26
1
14
AUI (bottom)