I²C interface protocol

LNBH30

18/27

DocID023739 Rev 2

Bit

Name

Value

Description

Bit 5

N/A

0

Bit 6

N/A

0

Bit

7(MSB)

N/A

0

N/A=reserved bit

All bits reset to "0" at power-on

7.4

Status registers

The status register can be only addressed to read mode and provides the diagnostic

functions described in the following tables.

Table 7: Status (read register, register address = 0x0)

Bit

Name

Value

Description

Bit 0 (LSB)

OLF

1

Output short-circuit or VOUT pin overload

0

No overload protection has been triggered to

Bit 1

OTF

1

0

Bit 2

VMON

1

Output voltage (VOUT pin) lower than VMON

specification thresholds. Refer to Table 9:

"Electrical characteristics"

0

Output voltage (VOUT pin) is within the VMON

specifications

Bit 3

PNG

1

Input voltage (VCC pin) lower than LPD minimum

thresholds. Refer to Table 9: "Electrical

characteristics"

0

Input voltage (VCC pin) higher than LPD minimum

thresholds. Refer to Table 9: "Electrical

characteristics"

Bit 4

PDO

1

Overcurrent detected on output pull-down stage

for a time longer than the deglitch period. This

may happen due to an external voltage source

present on the LNB output (VOUT pin)

0

No overcurrent detected on output pull-down

stage

Bit 5

N/A

-

Reserved

Bit 6

N/A

-

Bit 7 (MSB)

N/A

-

N/A = reserved bit

All bits reset to 0 at power-on