Motorola DSP56156 Manual page 135

ON-CHIP CODEC FREQUENCY RESPONSE AND GAIN ANALYSIS
100
L
o
g
0
M
a
g
n
i
-100
t
u
d
e
-200
(
d
B
)
-300
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 6-8 Log Magnitude Frequency Response of the
6 - 20
200 400
2 4 6
D/A Comb Filter for F=2.048MHz and D=128
DSP56156 ON-CHIP SIGMA/DELTA CODEC
600
Frequency (KHz)
8 10
Frequency (KHz)
Cascade of:
diff2-128.Filter
sum2-128.Filter
800 1024
Cascade of:
diff2-128.Filter
sum2-128.Filter
12 14 16
MOTOROLA