mmDMA4_CORE_RD_MAX_OUTSTAND
pb_addr = (mmDMA4_CORE_RD_MAX_OUTSTAND & ~0xFFF) + PROT_BITS_OFFS;
word_offset = ((mmDMA4_CORE_RD_MAX_OUTSTAND & PROT_BITS_OFFS) >> 7)
mask = 1U << ((mmDMA4_CORE_RD_MAX_OUTSTAND & 0x7F) >> 2);