TDATA - TDATA - 7.2 English - PG149

FIR Compiler LogiCORE IP Product Guide ( PG149)

Document ID
PG149
Release Date
2025-12-17
Version
7.2 English

The tdata bus is zero padded to an 8-bit boundary. As this is an input, the pad bits are ignored.

The following diagrams show the format and example timing of tdata into the RELOAD channel. When multiple filter sets are specified, Transaction 0 defines the index of the filter set being reloaded (zero indexed). When a single filter set is specified, this field/transaction is not present in the reload packet. In the following figure, the filter set index (Transaction 0) is labeled as “filt” with the remaining coefficient content labeled “cn.” When a single filter set is specified, the “filt” transaction is not present. See Coefficient Reload and Coefficient Reload Tab for details on how to generate the reload packet coefficient content.

Figure 1. tdata Format
Figure 2. tdata Example Timing