LNBH25LS datasheet(22/30 Pages) STMICROELECTRONICS

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I²C interface protocol

LNBH25LS

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DocID026753 Rev 3

7.4

Status registers

The status 1, 2 registers can be addressed only in read mode and provide the diagnostic

functions described in the following tables.

Table 10: Status 1 (read register. Register address = 0X0)

Bit

Name

Value

Description

Bit 0

(LSB)

OLF

VOUT pin overload protection has been triggered (IOUT > ILIM). Refer

to Table 8: "Data 3 (read/write register. Register address = 0X4)" for

the overload operation settings (PCL bit)

No overload protection has been triggered to the VOUT pin (IOUT <

ILIM)

Bit 1

N/A

Reserved

Bit 2

N/A

Reserved

Bit 3

N/A

Reserved

Bit 4

N/A

Reserved

Bit 5

N/A

Reserved

Bit 6

OTF

Junction overtemperature is detected, TJ > 150 °C. See also THERM

bit setting in Table 9: "Data 4 (read/write register. Register address =

0X5)"

Junction overtemperature not detected, TJ < 135 °C. TJ is below

thermal protection threshold

Bit 7

(MSB)

PNG

Input voltage (VCC pin) lower than LPD minimum thresholds. Refer to

Table 12: "Electrical characteristics"

Input voltage (VCC pin) higher than LPD thresholds. Refer to Table

12: "Electrical characteristics"

N/A = reserved bit

All bits reset to 0 at power-on

Table 11: Status 2 (read register. Register address = 0X1)

Bit

Name

Value

Description

Bit 0

(LSB)

N/A

Reserved

Bit 1

N/A

Reserved

Bit 2

N/A

Reserved

Bit 3

N/A

Reserved

Bit 4

N/A

Reserved

Bit 5

N/A

Reserved

Bit 6

N/A

Reserved

Bit 7

(MSB)

N/A

Reserved

N/A = reserved bit

All bits reset to 0 at power-on

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