MSM7584C View Datasheet(PDF) - Oki Electric Industry
Part Name
Description
MFG CO.
'MSM7584C' PDF : 57 Pages View PDF
¡ Semiconductor
MSM7584C
(2) CR1 (ADPCM Operation Mode Settings)
CR1
Initial Value
B7
TX
ON/OFF
0
B6
RX
ON/OFF
0
B5
ADPCM
RESET
0
B4
TX
MUTE
0
B3
RX
MUTE
0
B2
MLV2
0
B1
MLV1
0
B0
MLV0
0
B7: .............. Transmit side PCM signal ON/OFF.
0: ON
1: OFF
OFF: PCM idle pattern is transmitted.
B6: .............. Receive side PCM signal ON/OFF.
0: ON
1: OFF
OFF: PCM idle pattern is transmitted.
B5: .............. ADPCM reset (as specified by G. 721) 1: reset
B4: .............. Transmit side MUTE.
0: Transmit MUTE OFF.
1: Transmit MUTE ON.
Transmit output is in an idle state.
B3: .............. Receive side MUTE. This bit is ORed with the external control pin
RXMUTE.
0: Receive side MUTE OFF.
1: Receive side MUTE ON. The receive side output signals are attenuated
by the values represented by a combination of bits B2, B1, and B0 of the
CR1. (For voice path only.)
B2, B1, B0: An attenuation value is selected at receive side MUTE (CR1 - B3 = "1")
(see Table 3). These bits are ORed with the external pins MLV2, MLV1, and
MLV0.
Table 3 MUTE Level Settings
B2
B1
B0
Attenuation value
0
0
0
0dB loss
0
0
1 – 6dB loss
0
1
0 –12dB loss
0
1
1 –18dB loss
1
0
0 –24dB loss
1
0
1 –30dB loss
1
1
0 –36dB loss
1
1
1 MUTE (idle state)
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