AFE8221-Q1 Datasheet, PDF (42/59 Pages) Texas Instruments – DUAL INTERMEDIATE FREQUENCY (IF) ANALOG FRONT-END FOR DIGITAL RADIO

AFE8221-Q1
SBAS434 – DECEMBER 2008 ........................................................................................................................................................................................... www.ti.com
Table 27. Control Registers (continued)
Address: 17
Description: DDC1 NCO Frequency
Bits
Range
Action
15:0
0..65535
Upper bytes of DDC1 NCO frequency
Address: 18
Description: DDC1 NCO Frequency
Bits
Range
Action
15:0
0..65535
Lower bytes of DDC1 NCO frequency
Address: 19
Description: DDC1 NCO Phase
Bits
Range
Action
15:0
0..65535
Upper bytes of DDC1 NCO phase
Address: 20
Description: DDC1 NCO Phase
Bits
Range
Action
15:0
0..65536
Lower bytes of DDC1 NCO phase
Address: 21
Description: DDC1 CIC Filter Decimation
Bits
Range
Action
8:0
4..256
CIC filter decimation rate
Address: 22
Description: DDC1 CIC Filter
Bits
Range
Action
5:0
0..63
CIC filter post-filter shift
11:6
0..32
CIC filter post-filter scale
Address: 23
Description: DDC1 FIR Filter 1
Bits
Range
Action
1:0
0..3
FIR filter mode
7:2
0..63
Number of coefficients to process
13:8
0..63
Coefficient base address
Address: 24
Description: DDC1 FIR Filter 2A
Bits
Range
Action
1:0
0..3
FIR filter mode
8:2
0..127
Number of coefficients to process
15:9
0..127
Coefficient base address
Address: 25
Description: DDC1 FIR Filter 2B
Bits
Range
Action
1:0
0..3
FIR filter mode
8:2
0..127
Number of coefficients to process
15:9
0..127
Coefficient base address
Parameter Name
ddc1_demod_freq(31:16)
Parameter Name
ddc1_demod_freq(15:0)
Parameter Name
ddc1_demod_phase(31:16)
Parameter Name
ddc1_demod_phase(15:0)
Parameter Name
ddc1_cic_dec_rate(8:0)
Parameter Name
ddc1_cic_shift(5:0)
ddc1_cic_scale(5:0)
Parameter Name
ddc1_fir1_mode(1:0)
ddc1_fir1_ncoeffs(5:0)
ddc1_fir1_base_addr(5:0)
Parameter Name
ddc1_fir2a_mode(1:0)
ddc1_fir2a_ncoeffs(6:0)
ddc1_fir2a_base_addr(6:0)
Parameter Name
ddc1_fir2b_mode(1:0)
ddc1_fir2b_ncoeffs(6:0)
ddc1_fir2b_base_addr(6:0)
42
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