SI2107-X-FM SILABS [Silicon Laboratories], SI2107-X-FM Datasheet - Page 60

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SI2107-X-FM

Manufacturer Part Number
SI2107-X-FM
Description
SATELLITE RECEIVER FOR DVB-S/DSS WITH QUICKLOCK AND QUICKSCAN
Manufacturer
SILABS [Silicon Laboratories]
Datasheet
Si2107/08/09/10
Register 29h. Carrier Estimation Control
Register 31h. Symbol Rate Estimator Register L (Si2109 and Si2110 only)
Register 32h. Symbol Rate Estimator Register M (Si2109 and Si2110 only)
60
Name
Bit
7:3
2:0
Name
Name
Bit
Bit
Bit
7:0
7:0
Bit
Bit
D7
D7
D7
0
CESR[2:0]
Reserved
SREST[15:8]
SREST[7:0]
Name
Name
Name
D6
D6
D6
0
Symbol Rate Estimate (Low Byte).
Result of blindscan symbol rate estimator.
Symbol rate = SREST x sampling_rate / 2^23.
sampling_rate is the ADC sampling rate as calculated from BS_ADCSR.
Symbol Rate Estimate (Mid Byte).
See register 31h.
Default: 00h
D5
Default: 00h
D5
D5
0
Program as shown above.
Carrier Estimation Search Range.
000 = ± f
001 = ± f
010 = ± f
011 = ± f
100 = ± f
101 = ± f
110 = ± f
111 = ± f
Preliminary Rev. 0.81
s
s
s
s
s
s
s
s
/2048
/128
/1024
/16
/32
/64
/256
/512
SREST[15:8]
D4
D4
SREST[7:0]
D4
0
(± 0.2 MHz typ.)
(± 12.0 MHz typ.) Exclusive to QuickLock.
(± 6.3 MHz typ.) (default)
(± 3.1 MHz typ.)
(± 1.6 MHz typ.)
(± 0.8 MHz typ.)
(± 0.4 MHz typ.)
(± 0.1 MHz typ.)
D3
D3
D3
1
Function
Function
Function
D2
D2
D2
CESR[2:0]
D1
D1
D1
D0
D0
D0

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