Datasheet

LM5066
www.ti.com SNVS655G –JUNE 2011–REVISED FEBRUARY 2013
STATUS_CML (7Eh)
The STATUS_CML is a standard PMBus command that returns the value of a number of flags related to
communication faults. Accesses to this command should use the PMBus read byte protocol. To clear bits in this
register, a CLEAR_FAULTS command should be issued.
Table 14. STATUS_CML Definitions
Bit NAME Default
7 Invalid or unsupported command received 0
6 Invalid or unsupported data received 0
5 Packet Error Check failed 0
4 Not supported, always 0 0
3 Not supported, always 0 0
2 Not supported, always 0 0
1 Miscellaneous communications fault has occurred 0
0 Not supported, always 0 0
STATUS_MFR_SPECIFIC (80h)
The STATUS_MFR_SPECIFIC command is a standard PMBus command that contains manufacturer specific
status information. Accesses to this command should use the PMBus read byte protocol. To clear bits in this
register, the underlying fault should be removed and a CLEAR_FAULTS command should be issued.
Table 15. STATUS_MFR_SPECIFIC Definitions
Bit Meaning Default
7 Circuit breaker fault 0
6 Ext. MOSFET shorted fault 0
5 Not Supported, Always 0 0
4 Defaults loaded 1
3 Not supported: Always 0 0
2 Not supported: Always 0 0
1 Not supported: Always 0 0
0 Not supported: Always 0 0
READ_VIN (88h)
The READ_VIN command is a standard PMBus command that returns the 12-bit measured value of the input
voltage. Reading this register should use the coefficients shown in Table 41. Accesses to this command should
use the PMBus read word protocol. This value is also used internally for the VIN Over and Under Voltage
Warning detection.
Table 16. READ_VIN Register
Value Meaning Default
0h – 0FFFh Measured value for VIN 0000h
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