Texas Instruments PCM5122 Evaluation Module PCM5122EVM-U PCM5122EVM-U Datenbogen
Produktcode
PCM5122EVM-U
Z
-1
Z
-1
+
Z
- 1
Z
- 1
D1*2
D2
N1*2
N0
N2
( )
2
2
1
1
2 3
2
2
1
1
0
z
D
z
D
2
2
z
N
z
N
2
N
z
H
-
-
-
-
-
-
+
+
=
SLAS759A – AUGUST 2012 – REVISED SEPTEMBER 2012
shows a screen capture of PurePath Studio.
Figure 72. PurePath Studio Screen Capture
Biquad Section
The transfer function of each of the biquad filters is given by
(2)
Figure 73. Biquad Block
Table 33. Biquad Filter Coefficients
Filter
Channel
Coefficient
Register
N0
C10 (Pg 44, Reg 48,49,50,51)
N1
C11 (Pg 44, Reg 52,53,54,55)
Lch,
BIQUAD (1) - 1 BIQUAD (2) - 1
N2
C12 (Pg 44, Reg 56,57,58,59)
Rch
D1
C13 (Pg 44, Reg 60,61,62,63)
D2
C14 (Pg 44, Reg 64,65,66,67)
N0
C15 (Pg 44, Reg 68,69,70,71)
N1
C16 (Pg 44, Reg 72,73,74,75)
Lch,
BIQUAD (1) - 2 BIQUAD (2) - 2
N2
C17 (Pg 44, Reg 76,77,78,79)
Rch
D1
C18 (Pg 44, Reg 80,81,82,83)
D2
C19 (Pg 44, Reg 84,85,86,87)
56
Copyright © 2012, Texas Instruments Incorporated
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