BC417143B-ds-001Pg
Production Information
© Cambridge Silicon Radio Limited 2005
Page 3 of 116
_äìÉ`çêÉ»QJbñíÉêå~ä= Product Data Sheet
8.3 RF Synthesiser ...................................................................................................................................... 48
8.4 Clock Input and Generation ................................................................................................................... 48
8.5 Baseband and Logic .............................................................................................................................. 48
8.5.1 Memory Management Unit ....................................................................................................... 48
8.5.2 Burst Mode Controller ............................................................................................................... 48
8.5.3 Physical Layer Hardware Engine DSP ..................................................................................... 49
8.5.4 RAM (48Kbytes) ....................................................................................................................... 49
8.5.5 External Memory Driver ............................................................................................................ 49
8.5.6 USB .......................................................................................................................................... 49
8.5.7 Synchronous Serial Interface .................................................................................................... 49
8.5.8 UART ........................................................................................................................................ 49
8.6 Microcontroller ....................................................................................................................................... 49
8.6.1 Programmable I/O .................................................................................................................... 49
8.6.2 802.11 Co-Existence Interface ................................................................................................. 49
9 CSR Bluetooth Software Stacks .................................................................................................................. 50
9.1 BlueCore HCI Stack ............................................................................................................................. 50
9.1.1 Key Features of the HCI Stack: Standard Bluetooth Functionality ........................................... 51
9.1.2 Key Features of the HCI Stack: Extra Functionality .................................................................. 52
9.2 BlueCore RFCOMM Stack .................................................................................................................... 53
9.2.1 Key Features of the BlueCore4-External RFCOMM Stack ....................................................... 54
9.3 BlueCore Virtual Machine Stack ............................................................................................................ 55
9.4 BlueCore HID Stack .............................................................................................................................. 56
9.5 BCHS Software ..................................................................................................................................... 57
9.6 Additional Software for Other Embedded Applications .......................................................................... 57
9.7 CSR Development Systems .................................................................................................................. 57
10 Enhanced Data Rate ..................................................................................................................................... 58
10.1 Enhanced Data Rate Baseband ............................................................................................................ 58
10.2 Enhanced Data Rate π/4 DQPSK .......................................................................................................... 58
10.3 Enhanced Data Rate 8DPSK ................................................................................................................ 59
11 Device Terminal Descriptions ...................................................................................................................... 61
11.1 RF Ports ..................................................................................................................
.............................. 61
11.1.1 RF_A and RF_B ....................................................................................................................... 61
11.1.2 Single-Ended Input (RX_IN) ..................................................................................................... 62
11.1.3 Transmit RF Power Control for Class 1 Applications (TX_PWR) ............................................. 62
11.1.4 Control of External RF Components ......................................................................................... 63
11.2 External Reference Clock Input (XTAL_IN) ........................................................................................... 64
11.2.1 External Mode ........................................................................................................................... 64
11.2.2 XTAL_IN Impedance in External Mode .................................................................................... 64
11.2.3 Clock Timing Accuracy ............................................................................................................. 64
11.2.4 Clock Start-Up Delay ................................................................................................................ 65
11.2.5 Input Frequencies and PS Key Settings ................................................................................... 66
11.3 Crystal Oscillator (XTAL_IN, XTAL_OUT) ............................................................................................. 67
11.3.1 XTAL Mode ............................................................................................................................... 67
11.3.2 Load Capacitance ..................................................................................................................... 68
11.3.3 Frequency Trim ......................................................................................................................... 69
11.3.4 Transconductance Driver Model ............................................................................................... 70
11.3.5 Negative Resistance Model ...................................................................................................... 70
11.3.6 Crystal PS Key Settings ............................................................................................................ 71
11.3.7 Crystal Oscillator Characteristics .............................................................................................. 71
11.4 Off-Chip Program Memory .................................................................................................................... 74
11.4.1 Minimum Flash Specification .................................................................................................... 75
