NXP Semiconductors freescale K51 Series Reference Manual

• If the device contains less than five masters, values 000–011 are valid and writing other values results in an error.• If the device contains n masters where n ≥ 5, values 0 to n-1are valid and writing other values results in an error.Addresses: AXBS_PRS0 is 4000_4000h base + 0h offset = 4000_4000hAXBS_PRS1 is 4000_4000h base + 100h offset = 4000_4100hAXBS_PRS2 is 4000_4000h base + 200h offset = 4000_4200hAXBS_PRS3 is 4000_4000h base + 300h offset = 4000_4300hAXBS_PRS4 is 4000_4000h base + 400h offset = 4000_4400hAXBS_PRS5 is 4000_4000h base + 500h offset = 4000_4500hAXBS_PRS6 is 4000_4000h base + 600h offset = 4000_4600hAXBS_PRS7 is 4000_4000h base + 700h offset = 4000_4700hBit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0R 0 M7 0 M6 0 M5 0 M4 0 M3 0 M2 0 M1 0 M0WReset 0 1 1 1 0 1 1 0 0 1 0 1 0 1 0 0 0 0 1 1 0 0 1 0 0 0 0 1 0 0 0 0AXBS_PRSn field descriptionsField Description31ReservedThis read-only field is reserved and always has the value zero.30–28M7Master 7 priority. Sets the arbitration priority for this port on the associated slave port.000 This master has level 1, or highest, priority when accessing the slave port.001 This master has level 2 priority when accessing the slave port.010 This master has level 3 priority when accessing the slave port.011 This master has level 4 priority when accessing the slave port.100 This master has level 5 priority when accessing the slave port.101 This master has level 6 priority when accessing the slave port.110 This master has level 7 priority when accessing the slave port.111 This master has level 8, or lowest, priority when accessing the slave port.27ReservedThis read-only field is reserved and always has the value zero.26–24M6Master 6 priority. Sets the arbitration priority for this port on the associated slave port.000 This master has level 1, or highest, priority when accessing the slave port.001 This master has level 2 priority when accessing the slave port.010 This master has level 3 priority when accessing the slave port.011 This master has level 4 priority when accessing the slave port.100 This master has level 5 priority when accessing the slave port.101 This master has level 6 priority when accessing the slave port.110 This master has level 7 priority when accessing the slave port.111 This master has level 8, or lowest, priority when accessing the slave port.23ReservedThis read-only field is reserved and always has the value zero.Table continues on the next page...Memory Map / Register DefinitionK51 Sub-Family Reference Manual, Rev. 6, Nov 2011352 Freescale Semiconductor, Inc.