PSB4860HV4.1 Lantiq, PSB4860HV4.1 Datasheet - Page 32

• Manufacturer Part Number: PSB4860HV4.1
• Manufacturer: Lantiq

Specifications of PSB4860HV4.1

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Data Sheet
2.1.3
The echo suppression unit can be in one of three states:
• transmit state
• receive state
• idle state
In transmit state the microphone signal drives the line output while the line input is
attenuated. In receive state the loudspeaker signal is driven by the line input while the
microphone signal is attenuated. In idle state both signal paths are active with evenly
distributed attenuation. It can be prevendted that the echo suppression unit goes into the
idle state
Figure 15 Echo Suppression Unit - States of Operation
transmit state
receive state
idle state
Echo Suppression
loudspeaker
loudspeaker
microphone
microphone
loudspeaker
microphone
32
line out
line in
line out
line in
line out
line in
PSB 4860
2000-01-14