If input 0 is high, then a counter is output on the outputs and the bidirectional outputs. Otherwise the inputs are mirrored to the outputs.
Set input 0 high. Check the outputs are toggling.
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | sel / data_i[0] | data_o[0] (when sel=0) / counter_o[0] (when sel=1) | counter_o[0] |
| 1 | data_i[1] | data_o[1] (when sel=0) / counter_o[1] (when sel=1) | counter_o[1] |
| 2 | data_i[2] | data_o[2] (when sel=0) / counter_o[2] (when sel=1) | counter_o[2] |
| 3 | data_i[3] | data_o[3] (when sel=0) / counter_o[3] (when sel=1) | counter_o[3] |
| 4 | data_i[4] | data_o[4] (when sel=0) / counter_o[4] (when sel=1) | counter_o[4] |
| 5 | data_i[5] | data_o[5] (when sel=0) / counter_o[5] (when sel=1) | counter_o[5] |
| 6 | data_i[6] | data_o[6] (when sel=0) / counter_o[6] (when sel=1) | counter_o[6] |
| 7 | data_i[7] | data_o[7] (when sel=0) / counter_o[7] (when sel=1) | counter_o[7] |