CS6422-4 N/A, CS6422-4 Datasheet - Page 2

• Manufacturer Part Number: CS6422-4
• Description: Enhanced Full-Duplex Speakerphone IC
• Manufacturer: N/A

TABLE OF CONTENTS
2
Contacting Cirrus Logic Support
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mation describes products which are in development and subject to development changes. Cirrus Logic, Inc. has made best efforts to ensure that the information
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marks and service marks can be found at http://www.cirrus.com.
1. CHARACTERISTICS AND SPECIFICATIONS ........................................................................ 5
2. OVERVIEW ............................................................................................................................... 9
3. FUNCTIONAL DESCRIPTION ................................................................................................. 9
ABSOLUTE MAXIMUM RATINGS ........................................................................................... 5
RECOMMENDED OPERATING CONDITIONS ....................................................................... 5
POWER CONSUMPTION ........................................................................................................ 5
ANALOG CHARACTERISTICS ................................................................................................ 5
ANALOG TRANSMISSION CHARACTERISTICS.................................................................... 6
MICROPHONE AMPLIFIER ..................................................................................................... 6
DIGITAL CHARACTERISTICS ................................................................................................. 6
SWITCHING CHARACTERISTICS .......................................................................................... 7
3.1 Analog Interface ................................................................................................................. 9
3.2 Microcontroller Interface .................................................................................................. 11
3.3 Register 0 ......................................................................................................................... 13
3.4 Register 1 ......................................................................................................................... 16
3.5 Register 2 ......................................................................................................................... 18
3.3.1 Mic - Microphone Preamplifier Enable .................................................................... 14
3.3.2 HDD - Half-Duplex Disable...................................................................................... 14
3.3.3 GB - Graded Beta.................................................................................................... 14
3.3.4 RVol - Receive Volume Control............................................................................... 14
3.3.5 TSD - Transmit Suppression Disable ...................................................................... 14
3.3.6 ACC - Acoustic Coefficient Control ......................................................................... 15
3.3.7 TSMde - Transmit Suppression Mode..................................................................... 15
3.4.1 THDet - Transmit Half-Duplex Detection Threshold ................................................ 17
3.4.2 Taps - AEC/NEC Tap Allocation ............................................................................. 17
3.4.3 TVol - Transmit Volume Control .............................................................................. 17
3.4.4 RSD - Receive Suppression Disable....................................................................... 17
3.4.5 NCC - Network Coefficient Control.......................................................................... 17
3.4.6 AuNECD - Auto re-engage NEC Disable ................................................................ 17
3.5.1 RHDet - Receive Half-Duplex Detection Threshold ................................................ 19
3.5.2 RSThd - Receive Suppression Threshold ............................................................... 19
3.5.3 NseRmp - Noise estimator Ramp rate .................................................................... 19
3.1.1 Acoustic Interface ................................................................................................ 10
3.1.2 Network Interface ................................................................................................ 11
3.2.1 Description .......................................................................................................... 11
3.2.2 Register Definitions ............................................................................................. 12
CS6422