Visible to Intel only — GUID: nik1409855429404
Ixiasoft
Visible to Intel only — GUID: nik1409855429404
Ixiasoft
5.1.2.1. Rate Match FIFO Behaviors in Custom Single-Width Mode
Operation | Behavior |
---|---|
Symbol Insertion | Inserts a maximum of four skip patterns in a cluster, only if there are no more than five skip patterns in the cluster after the symbol insertion. |
Symbol Deletion | Deletes a maximum of four skip patterns in a cluster, only if there is one skip pattern left in the cluster after the symbol deletion. |
Full Condition | Deletes the data byte that causes the FIFO to go full. |
Empty Condition | Inserts a /K30.7/ (9'h1FE) after the data byte that caused the FIFO to go empty. |
In this example, /K28.5/ is the control pattern and neutral disparity /K28.0/ is the skip pattern. The first skip cluster has a /K28.5/ control pattern followed by two /K28.0/ skip patterns. The second skip cluster has a /K28.5/ control pattern followed by four /K28.0/ skip patterns. The rate match FIFO deletes only one /K28.0/ skip pattern from the first skip cluster to maintain at least one skip pattern in the cluster after deletion. Two /K28.0/ skip patterns are deleted from the second cluster for the three skip pattern deletion requirement.
In this example, /K28.5/ is the control pattern and neutral disparity /K28.0/ is the skip pattern. The first skip cluster has a /K28.5/ control pattern followed by three /K28.0/ skip patterns. The second skip cluster has a /K28.5/ control pattern followed by one /K28.0/ skip pattern. The rate match FIFO inserts only two /K28.0/ skip patterns into the first skip cluster to maintain a maximum of five skip patterns in the cluster after insertion. One /K28.0/ skip pattern is inserted into the second cluster for a total of three skip patterns to meet the insertion requirement.