Status Information
BC41B143A-ds-001Pe
This material is subject to CSR’s non-disclosure agreement
Production Information
© Cambridge Silicon Radio Limited 2005
Page 3 of 102
7.6.1 Memory Management Unit......................................................................................................... 39
7.6.2 Burst Mode Controller ................................................................................................................ 39
7.6.3 Physical Layer Hardware Engine DSP....................................................................................... 39
7.6.4 RAM ........................................................................................................................................... 39
7.6.5 ROM........................................................................................................................................... 39
7.6.6 USB............................................................................................................................................ 40
7.6.7 Synchronous Serial Interface ..................................................................................................... 40
7.6.8 UART ......................................................................................................................................... 40
7.6.9 Audio PCM Interface .................................................................................................................. 40
7.7 Microcontroller ....................................................................................................................................... 40
7.7.1 Programmable I/O...................................................................................................................... 40
7.7.2 802.11 Coexistence Interface .................................................................................................... 40
8
CSR Bluetooth Software Stacks ................................................................................................................. 41
8.1 BlueCore HCI Stack .............................................................................................................................. 41
8.1.1 Key Features of the HCI Stack – Standard Bluetooth Functionality ........................................... 42
8.1.2 Key Features of the HCI Stack – Extra Functionality ................................................................. 43
8.2 BlueCore RFCOMM Stack..................................................................................................................... 44
8.2.1 Key Features of the BlueCore4-ROM RFCOMM Stack ............................................................. 45
8.3 BlueCore Virtual Machine Stack ............................................................................................................ 46
8.4 BCHS Software ..................................................................................................................................... 47
8.5 Additional Software for Other Embedded Applications .......................................................................... 47
8.6 CSR Development Systems .................................................................................................................. 47
9
Enhanced Data Rate .................................................................................................................................... 48
9.1 Enhanced Data Rate Baseband ............................................................................................................ 48
9.2 Enhanced Data Rate
π/4 DQPSK.......................................................................................................... 48
9.3 Enhanced Data Rate 8DPSK................................................................................................................. 49
10 Device Terminal Descriptions..................................................................................................................... 51
10.1 RF Ports ................................................................................................................................................ 51
10.1.1 TX_A and TX_B ......................................................................................................................... 51
10.1.2 Single-Ended Input (RF_IN)....................................................................................................... 52
10.1.3 Transmit RF Power Control for Class 1 Applications (TX_PWR) ............................................... 52
10.1.4 Control of External RF Components .......................................................................................... 53
10.2 External Reference Clock Input (XTAL_IN) ........................................................................................... 54
10.2.1 External Mode ............................................................................................................................ 54
10.2.2 XTAL_IN Impedance in External Mode ...................................................................................... 54
10.2.3 Clock Timing Accuracy............................................................................................................... 54
10.2.4 Clock Start-Up Delay.................................................................................................................. 55
10.2.5 Input Frequencies and PS Key Settings..................................................................................... 56
10.3 Crystal Oscillator (XTAL_IN, XTAL_OUT) ............................................................................................. 57
10.3.1 XTAL Mode ................................................................................................................................ 57
10.3.2 Load Capacitance ...................................................................................................................... 58
10.3.3 Frequency Trim .......................................................................................................................... 58
10.3.4 Transconductance Driver Model ................................................................................................ 59
10.3.5 Negative Resistance Model ....................................................................................................... 59
10.3.6 Crystal PS Key Settings ............................................................................................................. 59
10.3.7 Crystal Oscillator Characteristics ............................................................................................... 60
10.4 UART Interface...................................................................................................................................... 63
10.4.1 UART Bypass............................................................................................................................. 65
10.4.2 UART Configuration While RESET is Active.............................................................................. 65
10.4.3 UART Bypass Mode................................................................................................................... 65
10.4.4 Current Consumption in UART Bypass Mode............................................................................ 65
10.5 USB Interface ........................................................................................................................................ 66
10.5.1 USB Data Connections .............................................................................................................. 66
10.5.2 USB Pull-Up Resistor................................................................................................................. 66
10.5.3 Power Supply ............................................................................................................................. 66
10.5.4 Self Powered Mode.................................................................................................................... 67
10.5.5 Bus Powered Mode.................................................................................................................... 68
10.5.6 Suspend Current ........................................................................................................................ 69
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