Ollie Milton / CD22M3494Matrix

Driver for a CD22M3494 cross point switcher

Library description

The CD22M3494 is a 16x8 crosspoint switch matrix, it can be used in any configuration i.e. 16 ins' 8 outs' or 16 outs' and 8 ins'. Control of the chip is pretty simple there are two parallel address buses a 4 byte address controls the X axis (16 IO pins) and a 3 byte address controls the Y axis (8 IO pins). A data bus says whether to open or close the switch and a 'strobe' bus actually performs the switch. This library provides a simple interface to control the CD22M3494 and provides a mechanism to associate source and destinations in pairs and switch the pairs via their names.

Diff: CD22M3494.h

Revision:
3:fa46a8badc92
Parent:
2:25049dc7da13
Child:
4:6ffeb0008f11
--- a/CD22M3494.h	Wed Sep 11 08:54:24 2013 +0000
+++ b/CD22M3494.h	Wed Sep 11 11:54:24 2013 +0000
@@ -150,6 +150,15 @@
         return false;            
     }
     
+    bool getAssociation(string name, unsigned short *xps) {
+        if (associationTable.count(name)) {
+            xps[0] = associationTable[name][0];
+            xps[1] = associationTable[name][1];
+            return true;
+        }
+        return false;
+    }
+    
 private:
     BusOut *xbus;
     BusOut *ybus;