The TKR_Mode precinct controls masking various aspect of the TKR functionality and configuring the ACD Front-end electronics. Also, the TKR_Mode precinct controls the readout path of the TKR data.
| Group | Register Name | Instances | Multiplicity | Subsections | Type | Width (bits) |
| SPT | low | 16 x 36 | 1 | 1 | int | 6 |
| SPT | high | 16 x 36 | 1 | 1 | int | 6 |
| TFE | calib_mask | 16 x 36 x 24 | 1 | 1 | mask | 64 |
| TDC | tfe_dac.injection | 16 x 36 x 24 | 1 | 1 | int | 7 |
| TCC | tcc_configuration | 16 x 9 | 1 | 1 | fields | 32 |
| TCC | input_mask | 16 x 9 | 1 | 1 | mask | 17 |
| TRC | trc_csr | 16 x 9 x 8 | 1 | 1 | fields | 33 |
| Field | Mask | Comments |
| tcc_configuration | ||
| data_full | 0x0000007f | When to assert almost_full on data fifo |
| error_full | 0x00007f00 | When to assert almost_full on error fifo |
| summary_full | 0x003f0000 | When to assert almost_full on diagnostic fifo |
| cable_length | 0x78000000 | Number of cable not to read out |
| output_enable | 0x80000000 | Bit set means output enabled |
| trc_csr | ||
| size | 0x0000007f | |
| or_stretch | 0x0001f000 | |
| force_no_err | 0x00100000 | |
| tot_en | 0x00200000 | |
| ld_size | 0x20000000 | |
| ld_stretch | 0x80000000 | |
| ld_st | 0x200000000 | |