¡ Semiconductor
MSM7602
HOW TO USE THE MSM7602
The MSM7602 cancels (based on the RIN signal) the echo which returns to SIN.
Connect the base signal to the R side and the echo generated signal to the S side.
Connection Methods According to Echos
Example 1:
Canceling acoustic echo (to handle acoustic echo from line input)
MSM7602
ROUT
RIN
Acoustic echo
CODEC
AFF
SIN
+
–
+
SOUT
CODEC
H Line input
Example 2: Canceling line echo (to handle line echo from microphone input)
Microphone input
MSM7602
RIN
ROUT
CODEC
SOUT
AFF
– + + SIN
CODEC
H
Line echo
Example 3:
Canceling line echo in a cascade connection
(to handle line echo from microphone input)
Microphone input
MSM7602
RIN Master ROUT
CODEC
SOUT
AFF
– + + SIN
CODEC
Slave
AFF
PD0 - 15
H
Line echo
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