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參數(shù)資料
| 型號： | LM25066PSQX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, QCC24 |
| 封裝： | LLP-24 |
| 文件頁數(shù)： | 26/48頁 |
| 文件大?。?/td> | 1456K |
| 代理商： | LM25066PSQX |
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STATUS_CML (7Eh)
The STATUS_CML command is a standard PMBus com-
mand 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
Memory Fault Detected Not supported, always 0
0
3
Processor Fault Detected Not supported, always 0
0
2
Reserved Not supported, always 0
0
1
Miscellaneous communications fault has occurred
0
Other memory or logic fault detected Not supported, always 0
0
STATUS_MFR_SPECIFIC (80h)
The STATUS_MFR_SPECIFIC command is a standard PM-
Bus command that contains manufacturer specific status
information. Accesses to this command should use the PM-
Bus 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
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 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.
TABLE 16. READ_VIN Register
Value
Meaning
Default
0h – 0FFFh
Measured value
for VIN
0000h
READ_VOUT (8Bh)
The READ_VOUT command is a standard PMBus com-
mand 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. Accesses to this command should use the PMBus
read word protocol. This value is also used internally for the
VOUT Under Voltage Warning detection.
TABLE 17. READ_VOUT Register
Value
Meaning
Default
0h – 0FFFh
Measured value
for VOUT
0000h
READ_TEMPERATURE_1 (8Dh)
The READ_TEMPERATURE _1 command is a standard PM-
Bus command that returns the signed value of the temper-
ature 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.
TABLE 18. READ_TEMPERATURE_1 Register
Value
Meaning
Default
0h – 0FFFh
Measured value
for
TEMPERATURE
0000h
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.
TABLE 19. MFR_ID Register
Byte
Name
Value
0
Number of bytes
03h
1
MFR ID-1
4Eh ‘N’
2
MFR ID-2
53h ‘S’
3
MFR ID-3
43h ‘C’
MFR_MODEL (9Ah)
The MFR_MODEL command is a standard PMBus com-
mand that returns the part number of the chip. To read the
MFR_MODEL, use the PMBus block read protocol.
www.national.com
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LM25066
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