SI2107-X-FM SILABS [Silicon Laboratories], SI2107-X-FM Datasheet - Page 65

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

Register 75h. Digital AGC 1 Control
Register 76h. Digital AGC 1 Gain L
Name
Name
Bit
Bit
5:4
Bit
7:0
7
6
3
2
1
0
Bit
D7
0
D7
DAGC1W[1:0]
DAGC1HOLD
DAGC1HOST
DAGC1_EN
DAGC1_EN
DAGC1[7:0]
Reserved
Reserved
DAGC1T
Name
Name
D6
D6
DAGC1W[1:0]
D5
D5
during operation)
Enable digital AGC 1
0 = Disabled
1 = Enabled (default)
Digital AGC Measurement Window
00 = 256 samples
01 = 512 samples
10 = 1024 samples (default)
11 = 2048 samples
Select AGC threshold
0 = –15 dBFS (default)
1 = –9 dBFS
Hold previous computed gain value on DAGC1
0 = Update gain after each calculation (default)
1 = Do not update gain value
Host-controlled DAGC1
Enable host control of holding of gain.
0 = control internal to chip (default)
1 = host control via registers DAGC1HOLD and DAGC1T
Program as shown above (device may change the value of this bit
Program as shown above.
Gain of digital AGC 1 (low-byte).
Default: 00h
Preliminary Rev. 0.81
D4
D4
DAGC1[7:0]
DAGC1T
D3
D3
DAGC1HOLD
Function
Function
D2
Si2107/08/09/10
D2
DAGC1HOST
D1
D1
D0
D0
0
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