Motorola DSP56156 Manual page 138

ON-CHIP CODEC FREQUENCY RESPONSE AND GAIN ANALYSIS
20
L
o
0
g
M
a
-20
g
n
i
-40
t
u
d
e -60
(
d
-80
B
)
-100
0.001
20
L
o
0
g
M
a
-20
g
n
i
-40
t
u
d
e -60
(
d
-80
B
)
-100
0.001
Figure 6-10 Log Magnitude Frequency Response of the
MOTOROLA
50 100
1 2 3
D/A Analog Comb Filter for F=2.048 MHz
DSP56156 ON-CHIP SIGMA/DELTA CODEC
150
Frequency (KHz)
4 5
Frequency (KHz)
Cascade of:
analogsum3-128.Filter
analogdiff3-128.Filter
200 256
Cascade of:
analogsum3-128.Filter
analogdiff3-128.Filter
6 7 8
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