73M1822/73M1922 Data Sheet
DS_1x22_017
6.6 Call Progress Monitor
For the purpose of monitoring activities on the line, a Call Progress Monitor is provided in the 73M1x22.
This audio output contains both transmit and receive data with configurable levels.
Function
Mnemonic Location
Register
Type
Description
CMVSEL
CMTXG
0x10[4]
W
Call Progress Monitor Voltage Reference Select
Quiescent DC voltage select at AOUT.
0 = 1.5 Vdc. (Default)
1 = VCC/2 Vdc.
0x10[3:2]
W
W
Transmit Path Gain Setting
00
01
10
11
0 dB (for TBS full swing, AOUT =1.08 Vpk) (Default)
-6 dB
-12 dB
MUTE
CMRXG
0x10[1:0]
Receive Path Gain Setting
00
01
10
11
0 dB (for RBS full swing, AOUT =1.08 Vpk) (Default)
-6 dB
-12 dB
MUTE
40
Rev. 1.6
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
