msm7719-01 Oki Semiconductor, msm7719-01 Datasheet - Page 2

• Manufacturer Part Number: msm7719-01
• Description: Echo Canceler With Adpcm Transcoder
• Manufacturer: Oki Semiconductor

LATTG2-0
AATTG2-0
LATTL2-0
AATTL2-0
ECMODE
¡ Semiconductor
BLOCK DIAGRAM
DETSL
ATHR
AHLD
DETP
LTHR
LDCL
LHLD
ADCL
ACCL
ACLP
DETT
LCCL
LCLP
LATT
AATT
AHD
LHD
AGC
LGC
+
SinL
Line
Echo
Canceler
Controller
Acoustic
Echo
Canceler
Controller
RoutL
ATTIL
MCU I/F
+
Line Echo Canceler
Adaptive FIR Filter
+
(LAFF)
Line
ATTsL
ATTtgrx
GainL ATTrL
Howling Detector
Double Talk Detector
Center
Power Calc.
Clip
N/L L/N
RinL
SoutL
Tone Generator (DTMF etc).
ATTgL
P/S&S/P
N/L L/N
I/O Controller
N/L L/N
RinA
ATTgA
SoutA
Double Talk Detector
Howling Detector
Power Calc.
ATTrA GainA
Acoustic Echo Canceler
ADPCM TRANSCODER
Center
Clip
ATTtgtx
Power Detect
Voice Detect
Note Gen.
Adaptive FIR Filter
Timing
Gen.
Mute
ADPCM
CODER
ADPCM
DECODER
Acoustic
(AAFF)
ATTsA
Clock Gen.
+
+
–
ATTIA
RoutA
SinA
MSM7719-01
VREF
Timing
Gen.
P/S
&
S/P
Test I/F
+
2/40
MLV0-2
MUTE
VOXI
VOXO
SG
BCLKA
SYNCA
IS
IR
CONTA
IOSL0-1
V
V
DG1-3
AG
DDD1-3
DDA