Digital Signal Processing Reference
In-Depth Information
x
n
add/sub
….
0
b
0
b
1
b
0+
b
1
+
b
0
+b
1+
b
m
3 operands adder/subtractor
P
0
x
n-1
+/-
….
P
x
n-m
….
P
P
1
>>1
y
n-N
….
0
a
1
a
2
a
1+
a
2
y
n-2
….
P
N
rst_n
.
.
.
y
n-1
….
a
1
+a
2+
a
N
load
N
Q(.)
(a)
x
n
0
b
0
b
1
b
0
+b
1
….
x
n-1
….
x
n- 2
MSBs
b
2
.
P
P
….
+/-
a
1
P+1
y
n-2
.
….
N
P
>>1
y
n-1
….
b
0
+ b
1
+ b
2
+ a
2
+ a
1
yn
rst_n
load
P+N
N
Q(.)
(b)
Figure 6.23
DA-based IIR filter design (a) Two ROM-based design. (b) One ROM-based design
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