Specifications

DATA SHEET QF4A512
Rev D4, Dec 07 49 www.quickfiltertech.com
3Fh FIR_0_0_CMAX_F1 (Maximum coefficient storage address for f1)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Address 3Fh X X addr5 addr4 addr3 addr2 addr1 addr0
Default value = 3F
Description: Minimum and maximum coefficient storage address values for f1.
40h FIR_0_0_NMIN_F2 (Minimum storage address for f2)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Address 40h X addr6 addr5 addr4 addr3 addr2 addr1 addr0
Default value = 0
41h FIR_0_0_NMAX_F2 (Maximum storage address for f2)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Address 41h X addr6 addr5 addr4 addr3 addr2 addr1 addr0
Default value = 7F
Description: Minimum and maximum data storage (tap) address values for f2.
42h FIR_0_0_CMIN_F2 (Minimum coefficient storage address for f2)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Address 42h X X addr5 addr4 addr3 addr2 addr1 addr0
Default value = 0
43h FIR_0_0_CMAX_F2 (Maximum coefficient storage address for f2)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Address 43h X X addr5 addr4 addr3 addr2 addr1 addr0
Default value = 3F
Description: Minimum and maximum coefficient storage address values for f2.
44h FIR_0_1_CTRL (FIR Control, filter 1)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Address 44h fir_0_1_decimf2 fir_0_1_decimf2 fir_0_1_decimf1 fir_0_1_decimf1 X fir_0_1_oddf2 fir_0_1_oddf1 fir_0_1_f2_enable
fir_0_1_f2_enable
*0 = Disable
1 = Enable
Description: Enable the second filter block, f2.
fir_0_1_oddf1
*0 = Disable
1 = Enable
Description: Set an odd number of taps for f1.
fir_0_1_oddf2
*0 = Disable
1 = Enable
Description: Set an odd number of taps for f2.