Shared LDPC Code Parameters - 1.1 English

Soft-Decision FEC Integrated Block LogiCORE IP Product Guide (PG256)

Document ID
PG256
Release Date
2022-10-19
Version
1.1 English
Important: Do not update the shared LDPC code parameters in 5G mode.

The SC_TABLE, the LA_TABLE, and the QC_TABLE registers are shared between LDPC codes. The offset pointers defined under the per-code parameters provide the start address of the required LDPC code information. The number of entries in the table required by a code depends on the other per-code parameters. The table addresses wrap (that is, a code can start at the top of a table and continue at the start address of each table).

Shared LDPC code parameters not in use by a code can be written. Writing to parameters in use can lead to unpredictable behavior, such as lock-up, requiring a reset to recover. The shared LDPC code parameters can only be read while the core is inactive (ACTIVE=0), otherwise 0 is returned.