Datasheet

1
0 1
15 1
1
N N z
H(z)
2 D z
-
-
+
=
-
1 2
0 1 2
15 1 2
1 2
N 2 N z N z
H(z)
2 2 D z D z
- -
- -
+ ´ +
=
- ´ -
TLV320DAC3100
www.ti.com SLAS671A –FEBRUARY 2010–REVISED MAY 2012
5.5.1.3.1 First-Order IIR Section
The IIR is of first order and its transfer function is given by
(1)
The frequency response for the first-order IIR section with default coefficients is flat.
Table 5-13. DAC IIR Filter Coefficients
Filter Coefficient Left DAC Channel Right DAC Channel Default (Reset) Value
First-order IIR N0 Page 9 / register 2 and page 9 / register Page 9 / register 8 and page 9 / register 0x7FFF (decimal 1.0 –
3 9 LSB value)
N1 Page 9 / register 4 and page 9 / register Page 9 / register 10 and page 9 / 0x0000
5 register 11
D1 Page 9 / register 6 and page 9 / register Page 9 / register 12 and page 9 / 0x0000
7 register 13
5.5.1.3.2 Biquad Section
The transfer function of each of the biquad filters is given by
(2)
Table 5-14. DAC Biquad Filter Coefficients
Filter Coefficient Left DAC Channel Right DAC Channel Default (Reset) Value
Biquad A N0 Page 8 / register 2 and page 8 / register Page 8 / register 66 and page 8 / 0x7FFF (decimal 1.0 –
3 register 67 LSB value)
N1 Page 8 / register 4 and page 8 / register Page 8 / register 68 and page 8 / 0x0000
5 register 69
N2 Page 8 / register 6 and page 8 / register Page 8 / register 70 and page 8 / 0x0000
7 register 71
D1 Page 8 / register 8 and page 8 / register Page 8 / register 72 and page 8 / 0x0000
9 register 73
D2 Page 8 / register 10 and page 8 / Page 8 / register 74 and page 8 / 0x0000
register 11 register 75
Biquad B N0 Page 8 / register 12 and page 8 / Page 8 / register 76 and page 8 / 0x7FFF (decimal 1.0 –
register 13 register 77 LSB value)
N1 Page 8 / register 14 and page 8 / Page 8 / register 78 and page 8 / 0x0000
register 15 register 79
N2 Page 8 / register 16 and page 8 / Page 8 / register 80 and page 8 / 0x0000
register 17 register 81
D1 Page 8 / register 18 and page 8 / Page 8 / register 82 and page 8 / 0x0000
register 19 register 83
D2 Page 8 / register 20 and page 8 / Page 8 / register 84 and page 8 / 0x0000
register 21 register 85
Biquad C N0 Page 8 / register 22 and page 8 / Page 8 / register 86 and page 8 / 0x7FFF (decimal 1.0 –
register 23 register 87 LSB value)
N1 Page 8 / register 24 and page 8 / Page 8 / register 88 and page 8 / 0x0000
register 25 register 89
N2 Page 8 / register 26 and page 8 / Page 8 / register 90 and page 8 / 0x0000
register 27 register 91
D1 Page 8 / register 28 and page 8 / Page 8 / register 92 and page 8 / 0x0000
register 29 register 93
D2 Page 8 / register 30 and page 8 / Page 8 / register 94 and page 8 / 0x0000
register 31 register 95
Copyright © 2010–2012, Texas Instruments Incorporated APPLICATION INFORMATION 27
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