Cirrus Logic CDB6422 - Manual (Page 3)

CDB6422
DS295DB2 3
3.2.13 doff - DTMF Transmit Off ......................................................................................... 10
3.2.14 dtmf [x] - DTMF Transmit On .................................................................................... 10
3.2.15 kd [0..e] - Keypad Down Event ................................................................................. 10
3.2.16 ku [0..e] - Keypad Up Event ..................................................................................... 10
3.2.17 st [x] - Single Tone Transmit On ............................................................................... 10
3.2.18 pd [1..4] - Push Button Down Event ......................................................................... 10
3.2.19 pu [1..4] - Push Button Up Event .............................................................................. 11
3.2.20 vol_up - CS6422 RVol Up ........................................................................................ 11
3.2.21 vol_down - CS6422 RVol Down ............................................................................... 11
3.2.22 mute - Mute .............................................................................................................. 11
3.2.23 unmute - Unmute ...................................................................................................... 11
3.2.24 save [x] - Save Current CS6422 Configuration ........................................................ 11
3.2.25 recall [x] - Recall CS6422 Configuration .................................................................. 11
3.2.26 ring - DAA Ring Event .............................................................................................. 11
3.2.27 mwr [abcd ef g] - Memory Write (8515) .................................................................... 11
3.2.28 uc - UC Jumper Set .................................................................................................. 11
3.2.29 ext - EXT Jumper Set ............................................................................................... 12
3.2.30 d {number} - Dial Phone Number ............................................................................. 12
3.2.31 ? - List Commands ................................................................................................... 12
4. USAGE EXAMPLES ....................................................................................................................... 12
4.1 CS6422 Usage Notes: ............................................................................................................. 12
4.2 Setting the Acoustic Coupling: ................................................................................................. 12
4.3 Jumper configuration: .............................................................................................................. 13
4.4 Usage Scenario #1: Analog Phone Call with Separated Speaker and Microphone ................ 14
4.5 Usage Scenario #2: Cellular Call through Analog Network Interface ..................................... 14
4.6 Usage Scenario #3: Cellular Call Through Digital Network Interface ..................................... 15
5. SCHEMATICS.................................................................................................................................. 17
6. REVISION HISTORY ....................................................................................................................... 29
LIST OF FIGURES
Figure 1. Power ..................................................................................................................................... 17
Figure 2. Acoustic Input......................................................................................................................... 18
Figure 3. Acoustic Output...................................................................................................................... 19
Figure 4. Network Output ...................................................................................................................... 20
Figure 5. Network Input ......................................................................................................................... 21
Figure 6. u-Law Codec .......................................................................................................................... 22
Figure 7. DAA (POTS Interface)............................................................................................................ 23
Figure 8. DTMF Transceiver ................................................................................................................. 24
Figure 9. CS6422 .................................................................................................................................. 25
Figure 10. RS-232 Interface .................................................................................................................. 26
Figure 11. Microcontroller...................................................................................................................... 27
Figure 12. Keypad and DIP Switch ....................................................................................................... 28