SIS Documentation
SIS3800
Scaler/Counter
Page 37 of 39
19.9 Geographical Address Pin Assignments
The SIS38xx board series is prepared for geographical addressing via the geographical address pins GA0*,
GA1*, GA2*, GA3*, GA4* and GAP*. The address pins are left open or tied to ground by the backplane as
listed in the following table:
Slot
Number
GAP*
Pin
GA4*
Pin
GA3*
Pin
GA2*
Pin
GA1*
Pin
GA0*
Pin
1
Open
Open
Open
Open
Open
GND
2
Open
Open
Open
Open
GND
Open
3
GND
Open
Open
Open
GND
GND
4
Open
Open
Open
GND
Open
Open
5
GND
Open
Open
GND
Open
GND
6
GND
Open
Open
GND
GND
Open
7
Open
Open
Open
GND
GND
GND
8
Open
Open
GND
Open
Open
Open
9
GND
Open
GND
Open
Open
GND
10
GND
Open
GND
Open
GND
Open
11
Open
Open
GND
Open
GND
GND
12
GND
Open
GND
GND
Open
Open
13
Open
Open
GND
GND
Open
GND
14
Open
Open
GND
GND
GND
Open
15
GND
Open
GND
GND
GND
GND
16
Open
GND
Open
Open
Open
Open
17
GND
GND
Open
Open
Open
GND
18
GND
GND
Open
Open
GND
Open
19
Open
GND
Open
Open
GND
GND
20
GND
GND
Open
GND
Open
Open
21
Open
GND
Open
GND
Open
GND
19.10 Additional Information on VME
The VME bus has become a popular platform for many realtime applications over the last
decade. Information on VME can be obtained in printed form, via the web or from
newsgroups. Among the sources are the VMEbus handbook,
http://www.vita.com
(the home
page of the VME international trade association (VITA)) and comp.bus.arch.vmebus. In
addition you will find useful links on many high energy physics labs like CERN or FNAL
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