PMBus Power System Mgt Protocol Specification – Part II – Revision 1.3
© 2013 System Management Interface Forum, Inc. Page 5 of 120
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10.6.2. Direct PMBus Device To Host Communication ...................................................... 49
10.7. Clearing A Shutdown Due To A Fault ..................................................................................... 49
10.8. Data Transmission Faults ........................................................................................................ 49
10.8.1. Corrupted Data ........................................................................................................ 50
10.8.2. Sending Too Few Bits ............................................................................................. 50
10.8.3. Reading Too Few Bits ............................................................................................. 50
10.8.4. Host Sends Or Reads Too Few Bytes .................................................................... 50
10.8.5. Host Sends Too Many Bytes ................................................................................... 51
10.8.6. Reading Too Many Bytes ........................................................................................ 51
10.8.7. Device Busy ............................................................................................................ 51
10.9. Data Content Faults ................................................................................................................. 52
10.9.1. Improperly Set Read Bit In The Address Byte ........................................................ 52
10.9.2. Unsupported Command Code ................................................................................ 52
10.9.3. Invalid Or Unsupported Data ................................................................................... 52
10.9.4. Data Out Of Range Fault ........................................................................................ 53
10.9.5. Reserved Bits .......................................................................................................... 53
11. Address, Memory, Communication And Capability Related Commands ............................................. 54
11.1. WRITE_PROTECT .................................................................................................................. 54
11.2. STORE_DEFAULT_ALL ......................................................................................................... 54
11.3. RESTORE_DEFAULT_ALL .................................................................................................... 54
11.4. STORE_DEFAULT_CODE ..................................................................................................... 55
11.5. RESTORE_DEFAULT_CODE ................................................................................................ 55
11.6. STORE_USER_ALL ................................................................................................................ 55
11.7. RESTORE_USER_ALL ........................................................................................................... 56
11.8. STORE_USER_CODE ............................................................................................................ 56
11.9. RESTORE_USER_CODE ....................................................................................................... 56
11.10. PAGE ....................................................................................................................................... 57
11.11. PHASE ..................................................................................................................................... 58
11.12. CAPABILITY ............................................................................................................................ 59
11.13. QUERY .................................................................................................................................... 60
11.14. PAGE_PLUS_WRITE .............................................................................................................. 61
11.15. PAGE_PLUS_READ ............................................................................................................... 61
11.16. Zone Operations ...................................................................................................................... 61
11.16.1. ZONE_CONFIG ...................................................................................................... 62
11.16.2. ZONE_ACTIVE ....................................................................................................... 63
12. On, Off And Margin Testing Related Commands ................................................................................. 63
12.1. OPERATION............................................................................................................................ 63
12.1.1. OPERATION Command Bit [7] ............................................................................... 64
12.1.2. OPERATION Command Bit [6] ............................................................................... 64
12.1.3. OPERATION Command Bits [5:4] .......................................................................... 64
12.1.4. OPERATION Command Bits [3:2] .......................................................................... 65
12.1.5. OPERATION Command Bit [1] ............................................................................... 65
12.1.6. OPERATION Command Bit [0] ............................................................................... 65
12.1.7. OPERATION Command Invalid Data ..................................................................... 65
12.2. ON_OFF_CONFIG .................................................................................................................. 66
13. Output Voltage Related Commands ..................................................................................................... 68
13.1. VOUT_MODE .......................................................................................................................... 68
13.2. VOUT_COMMAND .................................................................................................................. 68
