The following table describes the attribute settings to enable the TX synchronous gearbox.
| Attribute | Label | Description |
|---|---|---|
| CH*_TX_PCS_CFG0[5] | USE_GB | This bit must be set to 1'b1. |
| CH*_TX_PCS_CFG0[4:0] | MODE |
Bit[4] - Must be set to Bit[3] - Reserved. Must be set to Bit[2] - Reserved. Must be set to Bit[1] - Reserved. Must be set to Bit[0] - Set to |