Si3056
Si3018/19/10
Register 20. Call Progress Receive Attenuation
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
Type
ARM[7:0]
R/W
Reset settings = 0000_0000
Bit
Name
Function
7:0
ARM[7:0]
AOUT Receive Path Attenuation.
When decremented from the default setting, these bits linearly attenuate the AOUT
receive path signal used for call progress monitoring. Setting the bits to all 0s mutes the
AOUT receive path.
Attenuation = 20 log(ARM[7:0]/64)
1111_1111 = +12 dB (gain)
0111_1111 = +6 dB (gain)
0100_0000 = 0 dB
0010_0000 = –6 dB (attenuation)
0001_0000 = –12 dB
.
.
.
0000_0000 = Mute
Register 21. Call Progress Transmit Attenuation
Bit
Name
Type
D7
D6
D5
D4
ATM[7:0]
R/W
D3
D2
D1
D0
Reset settings = 0000_0000
Bit
7:0
Name
ATM[7:0]
Function
AOUT Transmit Path Attenuation.
When decremented from the default settings, these bits linearly attenuate the AOUT trans-
mit path signal used for call progress monitoring. Setting the bits to all 0s mutes the AOUT
transmit path.
Attenuation = 20 log(ATM[7:0]/64)
1111_1111 = +12 dB (gain)
0111_1111 = +6 dB (gain)
0100_0000 = 0 dB
0010_0000 = –6 dB (attenuation)
0001_0000 = –12 dB
.
.
.
0000_0000 = Mute
64
Rev. 1.05
SILICON [ SILICON ]
