si3068 Silicon Laboratories, si3068 Datasheet - Page 30

• Manufacturer Part Number: si3068
• Description: Fcc+ Embedded Direct Access Arrangement
• Manufacturer: Silicon Laboratories

Si3068
DAA Register 20. Call Progress Receive Attenuation
Reset settings = xxxx_0000
DAA Register 21. Call Progress Transmit Attenuation
Reset settings = xxxx_0000
30
Bit
7:0
Bit
7:0
Name
Name
Type
Type
Bit
Bit
ARM[7:0]
ATM[7:0]
Name
Name
D7
D7
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 0s mutes the
AOUT receive path.
0111_1111 = +6 dB (gain)
0100_0000 = 0 dB
0010_0000 = –6 dB (attenuation)
0001_0000 = –12 dB
...
0000_0000 = Mute
AOUT Transmit Path Attenuation.
When decremented from the default setting, these bits linearly attenuate the AOUT trans-
mit path signal used for call progress monitoring. Setting the bits to 0s mutes the AOUT
transmit path.
0111_1111 = +6 dB (gain)
0100_0000 = 0 dB
0010_0000 = –6 dB (attenuation)
0001_0000 = –12 dB
...
0000_0000 = Mute
D6
D6
D5
D5
Rev. 1.0
D4
D4
ARM[7:0]
ATM[7:0]
R/W
R/W
Function
Function
D3
D3
D2
D2
D1
D1
D0
D0