參數(shù)資料
型號: MSM7708-02
廠商: OKI SEMICONDUCTOR CO., LTD.
元件分類: Codec
英文描述: Serial Register Interface ADPCM CODEC for Telephone Recording(用于電話記錄的串行寄存器接口ADPCM編碼譯碼器)
中文描述: 串行接口差分PcM注冊解碼器的電話錄音(用于電話記錄的串行寄存器接口差分PcM編碼譯碼器)
文件頁數(shù): 23/38頁
文件大小: 232K
代理商: MSM7708-02
Semiconductor
MSM7708-02
23/38
(2) CR1 (ADPCM Operation Mode Settings)
B7:..............Transmit side ADPCM data MUTE
B6:..............Receive side PCM signal ON/OFF
B5:..............Transmit/Receive side ADPCM RESET (in accordance with the G.721)
1: MUTE
0: ON
1: OFF
1: RESET
0: ON
B4:..............Transmit side PCM signal ON/OFF
PCM idle pattern is transmitted when set OFF
B3:..............Receive side ADPCM data MUTE
1: OFF
1: MUTE
Mute operation set by B2, 1, 0 is available, provided this
bit is valid when MUTE pin is "0".
B2, 1, 0:......Receive side voice path mute level settings
(MLV2, MLV1, MLV0) =
(0, 0, 0) :
(0, 0, 1) :
(0, 1, 0) :
(0, 1, 1) :
(1, 0, 0) :
(1, 0, 1) :
(1, 1, 0) :
(1, 1, 1) :
through
–6 dB
–12 dB
–18 dB
–24 dB
–30 dB
–36 dB
MUTE
Note:
The above settings are not applied to various tone, side tone, and background noise.
CR1
Initial value
TX
MUTE
0
B7
RX
ON/OFF
0
B6
ADPCM
RESET
0
B5
TX
ON/OFF
0
B4
RX
MUTE
0
B3
RX
MLV2
0
B2
RX
MLV1
0
B1
RX
MLV0
0
B0
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