LNBH26 datasheet(25/38 Pages) STMICROELECTRONICS

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LNBH26

I²C interface protocol

Doc ID 022771 Rev 1

25/38

Table 10.

DATA 4 (Read/Write register. Register address = 0X5)

Bit

Name

Value

Description

Bit 0

(LSB)

EN_IMON-

IMON diagnostic function is enabled. (VOUT is set to 21 V typ.)

IMON diagnostic function is disabled. Keep always at “0” if IMON is not used.

Bit 1

N/A

Reserved. Keep to “0”

Bit 2

N/A

Reserved. Keep to “0”

Bit 3

OLR

A/B

In the case of overload protection activation (OLF=1), all VSEL bits are reset

to “0” and LNB relevant output (VOUT pin) is disabled. The VSEL bits must be

set again by the master after the overcurrent condition is removed (OLF=0).

In the case of overload protection activation (OLF=1) the LNB output (VOUT

pin) is automatically enabled as soon as the overload condition is removed

(OLF=0) with the previous VSEL bit setting.

Bit 4

EN_IMON-

IMON diagnostic function is enabled

IMON diagnostic function is disabled. Keep always at “0” if IMON is not used.

Bit 5

N/A

Reserved. Keep to “0”

Bit 6

THERM

A/B

If thermal protection is activated (OTF=1), all VSEL bits are reset to “0” and

LNB output (VOUT pin) is disabled (both section A & B). The VSEL bits must

be set again by the master after the overtemperature condition is removed

(OTF=0).

In the case of thermal protection activation (OTF=1) the LNB output (VOUT

pin) is automatically enabled as soon as the overtemperature condition is

removed (OTF=0) with the previous VSEL bit setting.

Bit 7

(MSB)

COMP

DC-DC converter compensation set to use HIGH E.S.R. capacitors (VUP pin)

0DC-DC converter compensation set to use LOW E.S.R. capacitors (VUP pin)

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