msm7718-01 Oki Semiconductor, msm7718-01 Datasheet - Page 12
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msm7718-01
Manufacturer Part Number
msm7718-01
Description
Echo Canceler With Adpcm Codec
Manufacturer
Oki Semiconductor
Datasheet
1.MSM7718-01.pdf
(38 pages)
- Current page: 12 of 38
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¡ Semiconductor
MUTE
This pin is used to enable the receive side voice path mute level.
To set the mute level, set this pin to “1”.
MLV0, MLV1, MLV2
These pins are used to set the receive side voice path mute level.
For the control method, refer to the control register description (CR1). Since these pins are ORed
with CR1-B2, B1, and B0 internally, set the bits of the register to “0“ before using this pin.
Note: The VOX function is valid when CR6-B7 is set to logic “1”.
Voice Output
VFRO
Voice Input
GSX2
VOXO
(a) Transmit VOX Function Timing Diagram (for Analog Input)
(b) Receive VOX Function (CR6-B3: logic “0”) Timing Diagram (for Analog Input)
VOXI
Normal Voice Signal
Decoded Time Period
T
Voice
Detect
VXON
Voice
Voice
Figure 6 VOX Function
Background
Noise
Silence
Silence
T
Silence
Detect (Hangover time)
VXOFF
Voice
Voice
MSM7718-01
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