Cirrus-logic CDB6422 Bedienungsanleitung

Copyright © Cirrus Logic, Inc. 2006(All Rights Reserved)http://www.cirrus.comCDB6422Evaluation Board for the CS6422Featuresz Includes analog, digital

CDB642210 DS295DB21. Saves the current state of the CS6422register(s) bits to be changed in eeprom2. Configures the CS6422 register(s) ac-cording to t

CDB6422DS295DB2 11write the value formed by the buttonspushed to the CS6422 (i.e. push “wr[wxyz]” onto the MSG Stack)2nd push: next 1 'kd [x]&ap

CDB642212 DS295DB23.2.29 ext - EXT Jumper SetA. Message indicating that the jumper EXTis installed, allowing an external source toconfigure the CS6422

CDB6422DS295DB2 13acoustic coupling between AO and APO to -9dB (adesign target).In a desktop speakerphone, the acoustic coupling istypically altered b

CDB642214 DS295DB24.4 Usage Scenario #1: Analog Phone Call with Separated Speaker and MicrophoneIn this scenario, NIN4 is set to “POTS(DAA)” toselect

CDB6422DS295DB2 15reg 5: 014a -- NECD = '1', ASdt = '-24dB'(disable NEC and enable acousticsidetone)Note: if the cellular phone pr

CDB642216 DS295DB27) press '2' '0' '0' '6' on the keypad8) press and release the "LOAD" pushbutton(o

CDB6422DS295DB2 175. SCHEMATICS Figure 1. Power

CDB642218 DS295DB2Figure 2. Acoustic Input

CDB6422DS295DB2 19Figure 3. Acoustic Output

CDB64222 DS295DB2TABLE OF CONTENTS1. GENERAL DESCRIPTION ...

CDB642220 DS295DB2Figure 4. Network Output

CDB6422DS295DB2 21Figure 5. Network Input

CDB642222 DS295DB2Figure 6. u-Law Codec

CDB6422DS295DB2 23Figure 7. DAA (POTS Interface)

CDB642224 DS295DB2Figure 8. DTMF Transceiver

CDB6422DS295DB2 25Figure 9. CS6422

CDB642226 DS295DB2Figure 10. RS-232 Interface

CDB6422DS295DB2 27Figure 11. Microcontroller

CDB642228 DS295DB2Figure 12. Keypad and DIP Switch

CDB6422DS295DB2 296. REVISION HISTORY Contacting Cirrus Logic SupportFor all product questions and inquiries contact a Cirrus Logic Sales Representati

CDB6422DS295DB2 33.2.13 doff - DTMF Transmit Off ... 103.2.14 d

CDB642230 DS295DB2

CDB64224 DS295DB21. GENERAL DESCRIPTIONThe CDB6422 provides an easy interface to evalu-ate the performance of the CS6422 echo cancellingIC in a target

CDB6422DS295DB2 5+20dB". The pot labeled "AIN_GAIN" (R2) con-trols the variable gain.2.2.1.5 AIN5:AIN5 selects the acoustic input sour

CDB64226 DS295DB22.2.4 Network Output2.2.4.1 NOUT1:NOUT1 selects between the “ACTIVE” drive out-put circuitry (op-amps) and the “PASSIVE” cir-cuitry (

CDB6422DS295DB2 7the phone after this occurs, slide the HOOKSWITCH first to the "OFF_HOOK" position andthen back to the "ON_HOOK"

CDB64228 DS295DB2The KEYPAD and status LEDs return to their nor-mal states after the Configuration number has beenselected.Because the Configuration s

CDB6422DS295DB2 93.2 Command Descriptions:3.2.1 ver - Output Code VersionA. Writes current code and EEPROM ver-sions to the UARTB. No arguments acce