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LNBH25LS Scheda tecnica(PDF) 20 Page - STMicroelectronics

Il numero della parte LNBH25LS
Spiegazioni elettronici  LNB supply and control IC with step-up and I²C interface
PDF  30 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LNBH25LS Scheda tecnica(HTML) 20 Page - STMicroelectronics

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I²C interface protocol
LNBH25LS
20/30
DocID026753 Rev 3
Bit
Name
Value
Description
Bit 4
N/A
0
Reserved. Keep to “0”
Bit 5
N/A
0
Reserved. Keep to “0”
Bit 6
N/A
0
Reserved. Keep to “0”
Bit 7
(MSB)
N/A
0
Reserved. Keep to “0”
N/A = reserved bit
All bits
reset to “0” at power-on
Table 7: Data 2 (read/write register. Register address = 0X3)
Bit
Name
Value
Description
Bit 0
(LSB)
TEN
1
22 kHz tone enabled. Tone output controlled by DSQIN pin
0
22 kHz tone output disabled
Bit 1
N/A
0
Reserved. Keep to
“0”
Bit 2
EXTM
1
DSQIN input pin is set to receive external 22 kHz TTL signal source
0
DSQIN input pin is set to receive external DiSEqC envelope TTL
signal
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
N/A
0
Reserved. Keep to “0”
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
Value
Description
Bit 0
(LSB)
N/A
1
Reserved. Keep to “0”
Bit 1
N/A
0
Reserved. Keep to “0”
Bit 2
PCL
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
N/A
0
Reserved. Keep to “0”
Bit 7
(MSB)
N/A
0
Reserved. Keep to “0”
N/A = reserved bit



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