msm7718-01 Oki Semiconductor, msm7718-01 Datasheet - Page 24
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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: 24 of 38
- Download datasheet (232Kb)
¡ Semiconductor
(2) CR1 (Setting of ADPCM operating mode and PCM I/O signals)
B7 ... ADPCM algorithm
B6 ... Transmitter/receiver ADPCM resetting (conforming to G.726)
B5 ... PCM I/O multiple timing control (PCMADI and PCMADO pins) of the ADPCM CODEC
B4 ... Muting of transmitter ADPCM data 1: Mute
B3 ... Muting of receiver ADPCM data
B2, B1, B0 ... Setting of a receiver voice path mute level
CR1
Initial value
0: Time slot 1 1: Time slot 2
This bit is valid when the MUTE pin is “0”.
(MLV2, MLV1, MLV0) =
ADPCM
MODE
B7
0
ADPCM
RESET
B6
0
PCM AD
0: 32 kbps (G.726) 1: Reserved
(0, 0, 0) :
(0, 0, 1) :
(0, 1, 0) :
(0, 1, 1) :
(1, 0, 0) :
(1, 0, 1) :
(1, 1, 0) :
(1, 1, 1) :
SEL
B5
0
1: Muting specified by bits B2, B1, and B0 is enabled.
MUTE
B4
TX
0
Through
– 6 dB
–12 dB
–18 dB
–24 dB
–30 dB
–36 dB
MUTE
MUTE
B3
RX
0
MLV2
B2
RX
0
1: Reset
MLV1
B1
RX
0
MSM7718-01
MLV0
24/38
B0
RX
0
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