[Doc] Update example-networks.md

docs/example-networks.md

 # Status for FINN example networks
 
+FINN uses [several pre-trained QNNs](https://github.com/maltanar/brevitas_cnv_lfc) that serve as examples and testcases. You can find a status summary below for each network.
+
+* TFC, SFC, LFC... are fully-connected networks trained on the MNIST dataset
+* CNV is a convolutional network trained on the CIFAR-10 dataset
+* w_a_ refers to the quantization used for the weights (w) and activations (a) in bits
+
+
 |                           	| Basic test | TFC-w1a1 	| TFC-w1a2 	| CNV-w1a1 	| CNV-w1a2 	| CNV-w2a2 	|
 |---------------------------	|------------ |----------	|----------	|----------	|----------	|----------	|
 | Export/Import             	| x           | x        	| x        	| x        	|          	|          	|
 | Streamlining              	| x           | x        	| x        	|          	|          	|          	|
 | Convert to HLS layers     	| x           | x        	|          	|          	|          	|          	|
 | npysim                    	| x           | x        	|          	|          	|          	|          	|
-| Stitched IPI design        	| x           | x        	|          	|          	|          	|           | 
-| rtlsim                    	| x           |          	|          	|          	|          	|          	|
-| Hardware test             	| x           |          	|          	|          	|          	|          	|
+| Stitched IPI design        	| x           | x        	|          	|          	|          	|           |
+| rtlsim node-by-node        	| x           | x        	|          	|          	|          	|          	|
+| rtlsim stitched IP        	| x           | x        	|          	|          	|          	|          	|
+| Hardware test             	| x           | x        	|          	|          	|          	|          	|