User's Manual

Bluegiga Technologies Oy
TABLE OF CONTENTS
1 Ordering Information......................................................................................................................................9
2 Block Diagram and Descriptions ................................................................................................................ 10
3 Electrical Characteristics ............................................................................................................................ 12
3.1 Absolute maximum ratings .................................................................................................................. 12
3.2 Recommended operating conditions .................................................................................................. 12
3.3 Terminal characteristics ...................................................................................................................... 13
3.4 Battery charger .................................................................................................................................... 14
3.5 Radio characteristics and general specifications ................................................................................ 16
3.6 Radio Characteristics .......................................................................................................................... 17
3.6.1 Radiation Pattern (WT32EK) ....................................................................................................... 17
4 WT32 Pin Description ................................................................................................................................. 18
4.1 Device Terminal Functions .................................................................................................................. 19
5 Power Control ............................................................................................................................................. 24
5.1 Power Supply Configuration ................................................................................................................ 24
5.2 Voltage Regulator Enable Pin ............................................................................................................. 24
5.3 Battery Charger ................................................................................................................................... 25
5.4 RESET ................................................................................................................................................ 26
6 Serial Interfaces .......................................................................................................................................... 28
6.1 UART Interface .................................................................................................................................... 28
6.1.1 UART Configuration While RESET is Active ............................................................................... 29
6.1.2 UART Bypass Mode .................................................................................................................... 29
6.2 USB Interface ...................................................................................................................................... 31
6.2.1 USB Pull-Up Resistor ................................................................................................................... 31
6.2.2 Self Powered Mode ...................................................................................................................... 31
6.2.3 Bus Powered Mode ...................................................................................................................... 32
6.2.4 Suspend Current .......................................................................................................................... 32
6.2.5 Detach and Wake-Up Signaling ................................................................................................... 32
6.2.6 USB Driver ................................................................................................................................... 33
6.2.7 USB 1.1 Compliance .................................................................................................................... 33
6.2.8 USB 2.0 Compatibility .................................................................................................................. 33
6.3 SPI Interface ........................................................................................................................................ 34
7 Audio Interfaces .......................................................................................................................................... 35
7.1 Audio Interface .................................................................................................................................... 35
7.1.1 Audio Input and Output ................................................................................................................ 35
7.2 Stereo Audio CODEC Interface .......................................................................................................... 36
7.2.1 ADC .............................................................................................................................................. 37
7.2.2 DAC .............................................................................................................................................. 38