msm7718-01 Oki Semiconductor, msm7718-01 Datasheet - Page 2

• Manufacturer Part Number: msm7718-01
• Description: Echo Canceler With Adpcm Codec
• Manufacturer: Oki Semiconductor

¡ Semiconductor
BLOCK DIAGRAM
AOUT–
AOUT+
AIN1–
AIN1+
VOXO
GSX1
GSX2
VFRO
AIN2
SGR
SGT
PWI
1.2 kW
1.2 kW
ATTtx
PCM CODEC
–
+
–
+
Voice Detect
–1
–
+
SinL
RoutL
MCU Interface
+
Coeff.L0
Coeff.L1
–
Adapive FIR Filter
RC LPF
RC LPF
Line Echo Canceler
ADC
DAC
BPF
LPF
L/m
m/L
ATTsL
(LAFF)
Line
ATTtgrx
GainL ATTrL
Double Talk Detector
L/m
m/L
Howling Detector
VREF
Center
Clip
Power Calc.
SoutL
Tone Generator (DTMF etc.)
Tone Detector (DTMF etc.)
RinL
P/S&S/P
2100 Hz Detect
m/L
L/m
Timing
Gen.
Mute
ADPCM TRANSCODER
ATTtgtx
Clock Gen.
DECODER
ADPCM
ADPCM
CODER
Power
Detect
(Reserved)
Controller
Test Interface
Memory
Flash
ATTrx
Noise
Gen.
P/S
S/P
MSM7718-01
VOXI
MLV0
MLV1
MLV2
MUTE
D7-0
A20-0
WE
OE
CS1
CS2
RP
IS
BCLKA
SYNCA
IR
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