SI2107 SILABS [Silicon Laboratories], SI2107 Datasheet - Page 73

• Manufacturer Part Number: SI2107
• Description: SATELLITE RECEIVER FOR DVB-S/DSS
• Manufacturer: SILABS [Silicon Laboratories]

Register CEh. LNB Supply Control 4 (Si2108 and Si2110 only)
Bit
6:4
7
3
2
1
0
Name
Bit
LNBL
D7
Reserved
LNB_EN
LNBLVL
LNBMD
COMP
Name
LNBL
D6
Reserved
D5
LNB Supply Lock.
Writing a one to this bit locks the contents of Register CCh. This bit
can only be cleared by a device reset.
Program to zero.
LNB Supply Enable.
0 = Disabled (default)
1 = Enabled
LNB Cable Compensation Boost.
0 = Normal operation (default)
1 = LNB output voltage increased +1 V
Select LNB supply levels for Japan or R.O.W.
0 = high voltage levels for R.O.W. i.e. Vhigh_nom = 17.5 V &
Vlow_nom = 11.5 V (default)
1 = low voltage levels for Japan i.e.
Vhigh_nom = 14.5 V & Vlow_nom = 11.5 V.
Note: The resulting nominal output voltages are: 12/15 V (Japan) and
LNB Mode Detect.
Detected supply mode (read-only)
0 = External LNB supply circuit
1 = Internal LNB supply circuit
Preliminary Rev. 0.7
13/18 V (R.O.W.) when using the default settings for the VLOW
(CBh[7:4]) and VHIGH (CBh[3:0]) register bits.
D4
LNB_EN
D3
Function
Si2107/08/09/10
COMP
D2
LNBLVL
D1
LNBMD
D0
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