Cirrus Logic CS5378 - Manual (Page 74)

CS5378
DS639F3 74
20.2.3 FILTCFG : 0x20
(MSB) 23 22 21 20 19 18 17 16
-- -- -- EXP4 EXP3 EXP2 EXP1 EXP0
R/W R/W R/W R/W R/W R/W R/W R/W
0 0 0 0 0 0 0 0
15 14 13 12 11 10 9 8
-- ORCAL USEOR USEGR -- FSEL2 FSEL1 FSEL0
R/W R/W R/W R/W R/W R/W R/W R/W
0 0 0 0 0 0 0 0
7 6 5 4 3 2 1 (LSB) 0
DEC3 DEC2 DEC1 DEC0 -- -- -- --
R/W R/W R/W R/W R/W R/W R/W R/W
0 0 0 0 0 0 0 0
DF Address: 0x20
-- Not defined;
read as 0
R Readable
W Writable
R/W Readable and
Writable
Bits in bottom rows
are reset condition
Bit definitions:
23:21 -- reserved 15 -- reserved 7:4 DEC[3:0] Decimation selection
(Output word rate)
20:16 EXP[4:0] OFFSET calibration
exponent
14 ORCAL Run OFFSET calibration
1: Enable
0: Disable 0111: 4000 SPS
0110: 2000 SPS
0101: 1000 SPS
0100: 500 SPS
0011: 333 SPS
13 USEOR Use OFFSET correction
1: Enable
0: Disable 0010: 250 SPS
0001: 200 SPS
0000: 125 SPS
1111: 100 SPS
1110: 50 SPS
12 USEGR Use GAIN correction
1: Enable
0: Disable 1101: 40 SPS
1100: 25 SPS
1011: 20 SPS
1010: 10 SPS
1001: 5 SPS
1000: 1 SPS
11 -- reserved 3:0 -- reserved
10:8 FSEL[2:0] Output filter stage select
111: reserved
110: reserved
101: IIR 3rd Order
100: IIR 2nd Order
011: IIR 1st Order
010: FIR2 Output
001: FIR1 Output
000: SINC Output
Figure 45. Filter Configuration Register FILTCFG