When the 5G NR standard is supported the control data interface is 40 bits with the fields shown in the following table for LDPC decode.
| Field | Bits | Range | Description |
|---|---|---|---|
| max_schedule | 39:38 | 0 to 3 |
Maximum number of blocks that can be interleaved by the LDPC decoder while processing this block. See LDPC Block Interleaving for details. 0 = Default scheduling behavior. |
| mb | 37:32 | 4 to 46 | Number of parity bits as a multiple of Z (Z*mb), thereby controlling code rate |
| id | 31:24 | 0 to 255 | External block identifier to be passed through to status output |
| max_iterations | 23:18 | 1 to 63 | Maximum number of iterations |
| term_on_no_change | 17 | 0 to 1 |
0: Do not terminate early if there is no change in hard bits for the whole block (information and parity) between iterations. 1: Terminate early if there is no change in hard bits for the whole block (information and parity) between iterations. |
| term_on_pass | 16 | 0 to 1 |
0: Do not terminate early on passing parity check 1: Terminate early on passing parity check |
| include_parity_op | 15 | 0 to 1 |
0: Output systematic values only 1: Output systematic values and parity |
| hard_op | 14 | 0 to 1 |
0: Soft output 1: Hard output |
| 13 | - | Reserved | |
| sc_idx | 12:9 | 0 to 15 | Normalization value to use on block. |
| bg | 8:6 | 0 to 4 | Base graph |
| z_set | 5:3 | 0 to 7 | Base graph cyclic shift set |
| z_j | 2:0 | 0 to 7 | Lifting factor (Z) j component 1 |
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