SI2107-X-FM SILABS [Silicon Laboratories], SI2107-X-FM Datasheet - Page 67

• Manufacturer Part Number: SI2107-X-FM
• Description: SATELLITE RECEIVER FOR DVB-S/DSS WITH QUICKLOCK AND QUICKSCAN
• Manufacturer: SILABS [Silicon Laboratories]

Register 7Ah. Digital AGC 2 Level L
Register 7Bh. Digital AGC 2 Level H
Register 7Ch. C/N Estimator Control
Name
Bit
Name
Name
Bit
7:0
Bit
7:0
6:3
1:0
Bit
Bit
Bit
7
2
CNS
D7
D7
D7
DAGC2GA[15:8]
DAGC2GA[7:0]
Reserved
CNW[1:0]
Name
CNM
CNS
Name
Name
D6
0
D6
D6
D5
0
C/N Estimator Start.
Writing a one to this bit initiates an C/N estimator and clears the result
stored in CNL. This bit is automatically cleared to zero when the mea-
surement period elapses.
Program as shown above.
C/N Estimator Mode.
0 = Finite window
1 = Infinite window (default)
C/N Measurement Window.
00 = 1024 samples
01 = 4096 samples (default)
10 = 16384 samples
11 = 65536 samples
D5
D5
Digital AGC2 Gain Auto (high byte).
See register 7Ah.
Default: 00h
Digital AGC2 Gain Auto (low byte).
Digital AGC2 gain applied to meet threshold
Default: 00h
Preliminary Rev. 0.81
D4
0
DAGC2GA[15:8]
D4
DAGC2GA[7:0]
D4
D3
0
D3
D3
Function
Function
Function
Si2107/08/09/10
CNM
D2
D2
D2
D1
D1
D1
CNW[1:0]
D0
D0
D0
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