mmTPC3_CFG_ROUND_CSR
pb_addr = (mmTPC3_CFG_ROUND_CSR & ~0xFFF) + PROT_BITS_OFFS;
word_offset = ((mmTPC3_CFG_ROUND_CSR & PROT_BITS_OFFS) >> 7) << 2;
mask = 1U << ((mmTPC3_CFG_ROUND_CSR & 0x7F) >> 2);