7.6.6.7.3 Packed Mode
Packed mode toggles data of the PDMC_RHR register between enabled channels in a compact way in order to minimize the number of accesses to PDMC_RHR.
This mode is accessed by setting PDMC_CFGR.PACK to 1. The values of PDMC_MR.RHRJUSTIF and PDMC_MR.RHRMSB have no effect. Packing is only available for data defined on 24 bits (PDMC_CFGR.DATAL = 0) or data defined on 16 bits (PDMC_CFGR.DATAL = 3).