The TLK10022 is a dual-channel multi-rate link aggregator intended for use in high-speed bi-directional point-to-point data transmission systems. The device allows for a reduction in the number of physical links required for a certain data throughput by multiplexing multiple lower-rate serial links into higher-rate serial links.

Each channel of the TLK10022 has a low-speed interface which can accommodate one, two, three, or four bidirectional serial links running at rates from 250 Mbps to 5 Gbps (maximum of 10 Gbps total throughput). The device’s high speed interfaces (one per channel, bidirectional) can operate at rates from 1 Gbps to 10 Gbps. When a channel is configured for a certain multiplexing ratio (1-to-1, 2-to-1, 3-to-1, or 4-to-1), the high speed side will operate at a fixed multiple of the low speed rate (e.g., four times faster for 4-to-1 mode) regardless of the number of lanes connected. Filler data will be placed on any unused lanes in order to keep the interleaved lane ordering constant. This allows for low speed lanes to be hot swapped during normal operation without requiring a change in configuration.

The device has multiple interleaving/de-interleaving schemes that may be used depending on the data type. These schemes allow for the low speed lane ordering to be recovered after the lanes are transmitted over a single high-speed link. There is also a programmable scrambling/de-scrambling function available to help ensure that the high-speed data has suitable properties for transmission (i.e., sufficient transition density for clock recovery and DC balance over time) even for non-ideal input data.Read more