CDB6420 Cirrus Logic Inc, CDB6420 Datasheet - Page 34

• Manufacturer Part Number: CDB6420
• Description: Development Kit
• Manufacturer: Cirrus Logic Inc

Specifications of CDB6420

• Silicon Manufacturer: Cirrus Logic
• Application Sub Type: Speakerphone
• Kit Application Type: Audio / Video / TV
• Silicon Core Number: CS6420
• Kit Contents: Board
• Kit Features: Analog And Digital Patch Area
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

GLOSSARY
Echo
Network Echo
Acoustic Echo
Reverberation
Near-End
Far-End
Transmit Path
Receive Path
Full-Duplex
Half-Duplex
Supplementary Echo Suppression
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A signal that returns to its source after some delay.
Echo resulting from signal reflection due to an impedance mismatch in a 2-to-4 wire converter
(hybrid).
Echo created by signal propagation in a room from a speaker to a microphone.
Local information that bounces around the room before it reaches the microphone. An example
of reverberation is when your back is to the speakerphone, and your voice bounces off the wall
before it reaches the microphone.
The location with the acoustic interface (speaker and microphone).
The location connected to the network interface.
The signal path from Near-End input to Far-End output.
The signal path from Far-End input to Near-End output.
The state when both Transmit and Receive paths are simultaneously active.
The state when either Transmit or Receive path is active.
Dynamic attenuation placed in the opposite path of the active path to mask residual echo. For
example, if the receive path is active, the transmit path is attenuated. When both paths are
simultaneously active, the suppression attenuation is removed. See the section on Suppression
in Design Considerations for more details.
CS6420
DS205PP2