mmTPC3_CFG_PROT
pb_addr = (mmTPC3_CFG_PROT & ~0xFFF) + PROT_BITS_OFFS;
word_offset = ((mmTPC3_CFG_PROT & PROT_BITS_OFFS) >> 7) << 2;
mask = 1U << ((mmTPC3_CFG_PROT & 0x7F) >> 2);