msm7617 Oki Semiconductor, msm7617 Datasheet - Page 3

• Manufacturer Part Number: msm7617
• Description: 2-channel Echo Canceler
• Manufacturer: Oki Semiconductor

¡ Semiconductor
BLOCK DIAGRAM
The above diagram shows internal connections for 2-channel parallel mode. The internal
connections for 2-channel serial I/O mode and 1-channel cross-connected mode are shown
below.
V
V
DD
SS
SYNCO
SOUT1
SOUT2
SOUT1
SOUT2
SCKO
(PLL)
(PLL)
RIN1
RIN2
RIN1
RIN2
2-channel parallel I/O mode
S/P
P/S
S/P
P/S
RIN
SOUT
RIN
SOUT
Detector
Detector
Howling
Howling
Clock Generator
PLL
CH1
CH2
AFF
AFF
+
+
Non-linear
Non-linear
Non-linear/
Non-linear/
ROUT
ROUT
Linear/
Linear/
Linear
Linear
SIN
SIN
Double Talk
Double Talk
Detector
Detector
EC-A Controller
ROUT1
SIN1
ROUT2
SIN2
SG
SG
–6LR
–6LR
Center
Center
SOUT1
Clip
Clip
RIN1
Calculator
Calculator
Power
Power
ATT
ATT
2-channel serial I/O mode
+6LR
+6LR
RIN
SOUT
RIN
SOUT
GC
GC
CH1
CH2
AFF
AFF
ATT
ATT
+
+
ROUT
ROUT
FIR Filter
FIR Filter
Adaptive
Adaptive
SIN
SIN
(AFF)
(AFF)
EC-B Controller
+
+
–
–
+
+
+6LR
+6LR
–6LR
–6LR
ROUT1
SIN1
Phase Reverse
Phase Reverse
2100 Hz Tone,
2100 Hz Tone,
SA
SA
1-channel cross-connected mode
Detector
Detector
Non-linear/
Non-linear/
Non-linear
Non-linear
RIN
SOUT
RIN
SOUT
Linear/
Linear/
Linear
Linear
CH1
CH2
I/O Controller
AFF
AFF
+
+
CH1
CH2
ROUT
ROUT
SIN
SIN
P/S
S/P
P/S
S/P
MSM7617
ROUT1
SIN1
ROUT2
SIN2
ROUT1
DF1
WDT1
SIN1
ROUT2
DF2
WDT2
SIN2
V
V
3/28
DD
SS