mmNIC0_QM1_ARB_MST_CRED_STS_20
pb_addr = (mmNIC0_QM1_ARB_MST_CRED_STS_20 & ~0xFFF) + PROT_BITS_OFFS;
word_offset = ((mmNIC0_QM1_ARB_MST_CRED_STS_20 & PROT_BITS_OFFS)
mask = 1U << ((mmNIC0_QM1_ARB_MST_CRED_STS_20 & 0x7F) >> 2);