Product Info

Bluegiga Technologies Oy
8.1.2
Long Frame Sync......................................................................................... 27
8.1.3 Short Frame Sync........................................................................................ 28
8.1.4 Multi-Slot Operation..................................................................................... 28
8.1.5 GCI Interface .............................................................................................. 29
8.1.6 Slots and Sample Formats ............................................................................ 29
8.1.7 Additional Features ...................................................................................... 30
8.1.8 PCM Timing Information ............................................................................... 31
8.1.9 PCM_CLK and PCM_SYNC Generation ............................................................. 34
8.1.10 PCM Configuration .................................................................................... 34
8.2 Digital Audio Interface (I2S) ............................................................................... 37
9 Power Control and Regulation................................................................................... 40
9.1 Power Control and Regulation ............................................................................. 40
9.2 VREG_ENABLE.................................................................................................. 40
9.3 RST# ..............................................................................................................40
9.4 Digital Pin States on Reset ................................................................................. 41
10 Bluetooth Radio................................................................................................... 43
10.1 Bluetooth Receiver.......................................................................................43
10.1.1 RSSI Analogue to Digital Converter ............................................................. 43
10.2 Bluetooth Transmitter .................................................................................. 43
11 Electrical Characteristics ....................................................................................... 44
11.1 Absolute Maximum Ratings ...........................................................................44
11.2 Recommended Operating Conditions ..............................................................44
11.3 Input/Output Terminal Characteristics ............................................................ 44
11.3.1 Linear Voltage Regulator............................................................................ 44
11.3.2 Digital ..................................................................................................... 45
11.3.3 Reset ...................................................................................................... 45
11.3.4 32 kHz External Reference Clock ................................................................. 45
11.4 Power Consumption ..................................................................................... 46
12 Physical Dimensions............................................................................................. 47
13 Layout Guidelines ................................................................................................ 50
13.1 WT21-N ..................................................................................................... 50
13.2 WT21-A ..................................................................................................... 50
14 Certifications....................................................................................................... 52
14.1 Bluetooth ................................................................................................... 52
14.2 FCC ........................................................................................................... 52
14.3 CE............................................................................................................. 53
14.4 Industry Canada (IC) ................................................................................... 53