Ollie Milton
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:
- 8:20fd0ebff489
- Parent:
- 7:6dc462dd6a0a
- Child:
- 9:4b836ceacfba
--- a/CD22M3494.h Thu Dec 19 14:35:12 2013 +0000
+++ b/CD22M3494.h Fri Dec 20 08:40:47 2013 +0000
@@ -122,9 +122,9 @@
* @param str the pin name for the strobe bus
* @param rs the pin name for reset.
*/
- CD22M3494(PinName x0, PinName x1, PinName x2, PinName x3, PinName y01, PinName y11, PinName y2, PinName d, PinName str, PinName rs) {
+ CD22M3494(PinName x0, PinName x1, PinName x2, PinName x3, PinName y0, PinName y1, PinName y2, PinName d, PinName str, PinName rs) {
xbus = new BusOut(x0, x1, x2, x3);
- ybus = new BusOut(y01, y11, y2);
+ ybus = new BusOut(y0, y1, y2);
data = new DigitalOut(d);
obe = new DigitalOut(str);
reset = new DigitalOut(rs);