ml50000 Oki Semiconductor, ml50000 Datasheet - Page 18

• Manufacturer Part Number: ml50000
• Description: Echo Canceler
• Manufacturer: Oki Semiconductor

¡ Semiconductor
Example 4: Canceling of both acoustic echo and line echo
Control Pin Connection Example
Single chip connection
2-stage cascade connection
Master + (slave ¥ 1)
Acoustic echo
Microphone input
(to handle both acoustic echo from line input and line echo from microphone input)
CODEC
PWDWN
+5 V
ADP
NLP
HCL
RST
ATT
Asterisk (*) indicates a pin only for the ML50000-011
HD
GC
PWDWN
ROUT
SIN
+5 V
ADP
NLP
HCL
RST
ATT
HD
For acoustic echo
GC
ML50000
+
AFF
+
MS
NLP
HCL
ADP
ATT
GC
HD
PWDWN
RST
INT
SF1
SF2
–
Master chip
MS *
NLP
HCL
ADP
ATT
GC
HD
PWDWN
RST
INT
SF1 *
SF2 *
RIN
SOUT
PD15
PD 0
IRLD
OF1
OF2
* PD15
* PD 0
* OF1
* OF2
IRLD
SOUT
RIN
+5 V
For line echo
ML50000
–
MS
NLP
HCL
ADP
ATT
GC
HD
PWDWN
RST
INT
SF1
SF2
AFF
Slave chip
+
+
PD15
PD 0
IRLD
OF1
OF2
SIN
ROUT
CODEC
Line echo
Line input
ML50000
H
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