In the ramp test mode, the JESD204C link layer operates normally, but the transport layer is disabled and the input from the formatter is ignored. In 8B/10B modes, the pattern begins after the ILA sequence finishes. In 64B/66B mode, the pattern begins after the serializers are initialized. Each lane transmits an identical octet stream that is encoded and scrambled by the link layer. The octet stream increments from 0x00 to 0xFF and repeats. This mode is available for both 8B/10B and 64B/66B modes.