msm7708-02 Oki Semiconductor, msm7708-02 Datasheet - Page 23

• Manufacturer Part Number: msm7708-02
• Description: Serial Register Interface Adpcm Codec For Telephone Recording
• Manufacturer: Oki Semiconductor

¡ Semiconductor
(2) CR1 (ADPCM Operation Mode Settings)
Note:
CR1
Initial value
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)
B4: .............. Transmit side PCM signal ON/OFF
B3: .............. Receive side ADPCM data MUTE
B2, 1, 0: ......Receive side voice path mute level settings
The above settings are not applied to various tone, side tone, and background noise.
MUTE
B7
TX
0
PCM idle pattern is transmitted when set OFF
(MLV2, MLV1, MLV0) =
ON/OFF
B6
RX
0
ADPCM
RESET
Mute operation set by B2, 1, 0 is available, provided this
bit is valid when MUTE pin is "0".
B5
0
ON/OFF
B4
TX
0
(0, 0, 0) :
(0, 0, 1) :
(0, 1, 0) :
(0, 1, 1) :
(1, 0, 0) :
(1, 0, 1) :
(1, 1, 0) :
(1, 1, 1) :
MUTE
B3
RX
0
1: MUTE
0: ON
1: RESET
0: ON
1: MUTE
through
–6 dB
–12 dB
–18 dB
–24 dB
–30 dB
–36 dB
MUTE
MLV2
B2
RX
0
1: OFF
1: OFF
MLV1
B1
RX
0
MSM7708-02
MLV0
23/38
B0
RX
0