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LNBH26LS Fiches technique(PDF) 22 Page - STMicroelectronics

No de pièce LNBH26LS
Description  Dual LNBS supply and control IC with step-up and IC interface
PDF  33 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LNBH26LS Fiches technique(HTML) 22 Page - STMicroelectronics

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I²C interface protocol
LNBH26LS
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DocID025504 Rev 1
Bit
Name
CH
Value
Description
0
DSQIN input pin is set to receive external DiSEqC envelope
TTL signal
Bit 7
(MSb)
N/A
0
Reserved. Keep to “0”.
N/A = reserved bit.
All bits reset to “0” at power-on.
Table 8: DATA 3 (read/write register. Register address = 0X4)
Bit
Name
CH
Value
Description
Bit 0 (LSb)
N/A
A
0
Reserved. Keep to “0”
Bit 1
N/A
0
Reserved. Keep to “0”
Bit 2
PCL-A
1
Pulsed (dynamic) LNB output current limiting is deactivated
0
Pulsed (dynamic) LNB output current limiting is activated
Bit 3
N/A
0
Reserved. Keep to “0”
Bit 4
N/A
0
Reserved. Keep to “0”
Bit 5
N/A
0
Reserved. Keep to “0”
Bit 6
PCL-B
B
1
Pulsed (dynamic) LNB output current limiting is deactivated
0
Pulsed (dynamic) LNB output current limiting is deactivated
Bit 7 (MSb)
N/A
0
Reserved. Keep to “0”
N/A = reserved bit.
All bits reset to “0” at power-on.
Table 9: DATA 4 (read/write register. Register address = 0X5)
Bit
Name
CH
Value
Description
Bit 0
(LSb)
N/A
-
0
Reserved. Keep to 0
Bit 1
N/A
-
0
Reserved. Keep to 0
Bit 2
N/A
-
0
Reserved. Keep to 0
Bit 3
OLR
A/B
1
In case of overload protection activation (OLF=1), all VSEL 1..4
bits are reset to “0” and LNB output (VOUT pin) is disabled. The
VSEL bits must be set again by the master after the overcurrent
condition is removed (OLF=0).
0
In 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 bits
setting.
Bit 4
N/A
-
0
Reserved. Keep to 0
Bit 5
N/A
-
0
Reserved. Keep to 0
Bit 6
THERM
A/B
1
If thermal protection is activated (OTF=1), all VSEL 1..4 bits are
reset to “0” and LNB output (VOUT pin) is disabled. The VSEL bits
must be set again by the master after the overtemperature
condition is removed (OTF=0).



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