CC864-DUAL Hardware User Guide
1vv0300791 Rev 4.4 – 2011-01-26
Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved.
Page 5 of 63
3.9.4.
Handset Interface ........................................................................................................ 44
3.9.5.
Headset Interface ........................................................................................................ 45
3.9.6.
Car Kit Speakerphone Interface .................................................................................. 46
3.10.
PCM Digital Audio Interface ................................................................................ 48
3.11.
I
2
C Bus Interface (Future) ................................................................................... 48
3.12.
ADC/DAC Interface ............................................................................................. 49
3.12.1.
ADC Converter ............................................................................................................ 49
3.12.1.1.
Description ........................................................................................................... 49
3.12.1.2.
Using ADC Converter ........................................................................................... 49
3.12.2.
DAC Converter ............................................................................................................ 50
3.12.2.1.
Description ........................................................................................................... 50
3.12.2.2.
Enabling the DAC ................................................................................................. 50
3.12.2.3.
Low Pass Filter Example ...................................................................................... 50
3.13.
General Purpose I/O ........................................................................................... 51
3.13.1.
Using a GPIO pin as Input ........................................................................................... 52
3.13.2.
Using a GPIO pin as Output ........................................................................................ 52
3.13.3.
TGPIO_06/ALARM ...................................................................................................... 52
3.13.4.
TGPIO_07/BUZZER .................................................................................................... 52
3.13.5.
TGPIO_08/POWER_SAVING ..................................................................................... 53
3.14.
Miscellaneous Interface Signals ......................................................................... 53
3.14.1.
VAUX1 ......................................................................................................................... 53
3.14.2.
VRTC ........................................................................................................................... 54
3.14.3.
STAT_LED – Network Status LED .............................................................................. 54
3.14.4.
PWRMON .................................................................................................................... 55
3.14.5.
AXE ............................................................................................................................. 55
4.
Development and Testing .......................................................................................... 56
4.1.
Debug of the Module in the Final Application ......................................................... 56
4.2.
Development Kit ..................................................................................................... 56
5.
Acronyms and Abbreviations .................................................................................... 58
6.
Appendix: Pin Allocation ........................................................................................... 59
