SI2107 SILABS [Silicon Laboratories], SI2107 Datasheet - Page 58

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

Si2107/08/09/10
Register 75h. Digital AGC 1 Control
Register 76h. Digital AGC 1 Gain L
58
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
Program to 0 (device may change the value of this bit during opera-
tion)
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
0 = Gain is determined by DAGC1 module. Digital AGC1 gain regis-
ter is read-only. (Default)
1 = Gain is determined by host and specified in Digital AGC1 Gain
Register (76h & 77h).
Program to 0.
Gain of digital AGC 1 (low-byte).
Default: 00h
Preliminary Rev. 0.7
D4
D4
DAGC1[7:0]
DAGC1T
D3
D3
DAGC1HOLD
Function
Function
D2
D2
DAGC1HOST
D1
D1
D0
D0
0