User's Manual

Silicon Laboratories Finland Oy
TABLE OF CONTENTS
1 Ordering Information......................................................................................................................................6
2 Pinout and Terminal Description ...................................................................................................................7
3 Electrical Characteristics ............................................................................................................................ 10
3.1 Absolute Maximum Ratings ................................................................................................................ 10
3.2 Recommended Operating Conditions ................................................................................................. 10
3.3 Input / Output Terminal Characteristics .............................................................................................. 11
3.3.1 Input/Output Terminal Characteristics (Digital) ............................................................................ 11
3.3.2 Input/Output Terminal Characteristics (USB) .............................................................................. 12
3.4 PIO Current Sink and Source Capability ............................................................................................. 13
3.5 Transmitter Performance For BDR ..................................................................................................... 14
3.6 Receiver Performance ........................................................................................................................ 14
3.7 Current Consumption .......................................................................................................................... 15
3.8 WT11u-A Antenna Specification ......................................................................................................... 16
4 Physical Dimensions .................................................................................................................................. 19
4.1 Package Drawings .............................................................................................................................. 21
5 Layout Guidelines ....................................................................................................................................... 23
6 UART Interface ........................................................................................................................................... 26
6.1 UART Bypass ...................................................................................................................................... 28
6.2 UART Configuration While Reset is Active ......................................................................................... 28
6.3 UART Bypass Mode ............................................................................................................................ 28
7 USB Interface ............................................................................................................................................. 29
7.1 USB Data Connections ....................................................................................................................... 29
7.2 USB Pull-Up resistor ........................................................................................................................... 29
7.3 USB Power Supply .............................................................................................................................. 29
7.4 Self-Powered Mode ............................................................................................................................. 29
7.5 Bus-Powered Mode ............................................................................................................................. 30
7.6 USB Suspend Current ......................................................................................................................... 31
7.7 USB Detach and Wake-Up Signaling.................................................................................................. 31
7.8 USB Driver .......................................................................................................................................... 32
7.9 USB v2.0 Compliance and Compatibility ............................................................................................ 32
8 Serial Peripheral Interface (SPI) ................................................................................................................. 33
9 PCM Codec Interface ................................................................................................................................. 34
9.1 PCM Interface Master/Slave ............................................................................................................... 34
9.2 Long Frame Sync ................................................................................................................................ 35
9.3 Short Frame Sync ............................................................................................................................... 35
9.4 Multi-slot Operation ............................................................................................................................. 36
9.5 GCI Interface ....................................................................................................................................... 36