lm5066pmhx National Semiconductor Corporation, lm5066pmhx Datasheet - Page 32

• Manufacturer Part Number: lm5066pmhx
• Description: High Voltage System Power Management And Protection Ic With Pmbus
• Manufacturer: National Semiconductor Corporation

www.national.com
STATUS_CML (7Eh)
The STATUS_CML is a standard PMBus command that re-
turns the value of a number of flags related to communication
STATUS_MFR_SPECIFIC (80h)
The STATUS_MFR_SPECIFIC command is a standard PM-
Bus command that contains manufacturer specific status in-
formation. 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.
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 the
Telemetry and Warning Conversion Coefficients Table. Ac-
cesses 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.
READ_VOUT (8Bh)
The READ_VOUT command is a standard PMBus command
that returns the 12-bit measured value of the output voltage.
Reading this register should use the coefficients shown in the
Telemetry and Warning Conversion Coefficients Table. Ac-
cesses to this command should use the PMBus read word
protocol. This value is also used internally for the VOUT Un-
der Voltage Warning detection.
Value
0h – 0FFFh
Bit
TABLE 15. STATUS_MFR_SPECIFIC Definitions
7
6
5
4
3
2
1
0
Bit
7
6
5
4
3
2
1
0
TABLE 16. READ_VIN Register
Ext. MOSFET shorted fault
Not Supported, Always 0
Not supported: Always 0
Not supported: Always 0
Not supported: Always 0
Not supported: Always 0
Circuit breaker fault
Meaning
Measured value
for VIN
Defaults loaded
Meaning
Miscellaneous communications fault has occurred
Invalid or unsupported command received
Default
0000h
Invalid or unsupported data received
TABLE 14. STATUS_CML Definitions
Packet Error Check failed
Not supported, always 0
Not supported, always 0
Not supported, always 0
Not supported, always 0
Default
0
0
0
1
0
0
0
0
NAME
32
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.
READ_TEMPERATURE_1 (8Dh)
The READ_TEMPERATURE_1 command is a standard PM-
Bus command that returns the signed value of the tempera-
ture measured by the external temperature sense diode.
Reading this register should use the coefficients shown in the
Telemetry and Warning Conversion Coefficients Table. Ac-
cesses to this command should use the PMBus read word
protocol. This value is also used internally for the Over Tem-
perature Fault and Warning detection. This data has a range
of -256°C to + 255°C after the coefficients are applied.
MFR_ID (99h)
The MFR_ID command is a standard PMBus command that
returns the identification of the manufacturer. To read the
MFR_ID, use the PMBus block read protocol.
MFR_MODEL (9Ah)
The MFR_MODEL command is a standard PMBus command
that returns the part number of the chip. To read the
MFR_MODEL, use the PMBus block read protocol.
Value
0h – 0FFFh
Value
0h – 0FFFh
Byte
TABLE 18. READ_TEMPERATURE_1 Register
0
1
2
3
TABLE 17. READ_VOUT Register
TABLE 19. MFR_ID Register
Number of bytes
Meaning
Measured value
for VOUT
Meaning
Measured value
for
TEMPERATURE
MFR ID-1
MFR ID-2
MFR ID-3
Name
Default
0000h
Default
0000h
Default
0
0
0
0
0
0
0
0
4Eh ‘N’
53h ‘S’
43h ‘C’
Value
03h