mmTPC4_QM_ARB_MST_CRED_STS_20
pb_addr = (mmTPC4_QM_ARB_MST_CRED_STS_20 & ~0xFFF) + PROT_BITS_OFFS;
word_offset = ((mmTPC4_QM_ARB_MST_CRED_STS_20 & PROT_BITS_OFFS) >> 7)
mask = 1U << ((mmTPC4_QM_ARB_MST_CRED_STS_20 & 0x7F) >> 2);