BC41B143A-ds-003Pc
Advance Information
© Cambridge Silicon Radio Limited 2005
Page 3 of 94
_äìÉ`çêÉ»QJolj=mäìÖJåJdç»= Data Sheet
8.6.4 RAM (48Kbytes) ....................................................................................................................... 34
8.6.5 ROM ......................................................................................................................................... 34
8.6.6 USB .......................................................................................................................................... 34
8.6.7 Synchronous Serial Interface .................................................................................................... 34
8.6.8 UART ........................................................................................................................................ 34
8.7 Microcontroller ....................................................................................................................................... 35
8.7.1 Programmable I/O .................................................................................................................... 35
8.7.2 802.11 Co-Existence Interface ................................................................................................. 35
9 CSR Bluetooth Software Stacks .................................................................................................................. 36
9.1 BlueCore HCI Stack ............................................................................................................................. 36
9.1.1 Key Features of the HCI Stack: Standard Bluetooth Functionality ........................................... 37
9.1.2 Key Features of the HCI Stack: Extra Functionality .................................................................. 38
9.2 BlueCore RFCOMM Stack .................................................................................................................... 39
9.2.1 Key Features of the BlueCore4-ROM Plug-n-Go RFCOMM Stack .......................................... 40
9.3 BlueCore Virtual Machine Stack ............................................................................................................ 41
9.4 BlueCore HID Stack .............................................................................................................................. 42
9.5 Host-Side Software ................................................................................................................................ 43
9.6 Device Firmware Upgrade ..................................................................................................................... 43
9.7 BCHS Software ..................................................................................................................................... 43
9.8 Additional Software for Other Embedded Applications .......................................................................... 43
9.9 CSR Development Systems .................................................................................................................. 43
10 Device Terminal Descriptions ...................................................................................................................... 44
10.1 RF Ports ................................................................................................................................................ 44
10.1.1 RF Plug-n-Go ............................................................................................................................ 44
10.1.2 Single-Ended Input (RF_IN) ..................................................................................................... 45
10.2 External Reference Clock Input (XTAL_IN) ........................................................................................... 46
10.2.1 External Mode ........................................................................................................................... 46
10.2.2 XTAL_IN Impedance in External Mode .................................................................................... 46
10.2.3 Clock Timing Accuracy ............................................................................................................. 46
10.2.4 Clock Start-Up Delay ................................................................................................................ 47
10.2.5 Input Frequencies and PS Key Settings ................................................................................... 48
10.3 Crystal Oscillator (XTAL_IN, XTAL_OUT) ............................................................................................. 49
10.3.1 XTAL Mode ............................................................................................................................... 49
10.3.2 Load Capacitance ..................................................................................................................... 50
10.3.3 Frequency Trim ......................................................................................................................... 51
10.3.4 Transconductance Driver Model ............................................................................................... 52
10.3.5 Negative Resistance Model ...............................................................................................
....... 52
10.3.6 Crystal PS Key Settings ............................................................................................................ 53
10.3.7 Crystal Oscillator Characteristics .............................................................................................. 53
10.4 UART Interface ...................................................................................................................................... 56
10.4.1 UART Bypass ........................................................................................................................... 58
10.4.2 UART Configuration While RESET is Active ............................................................................ 58
10.4.3 UART Bypass Mode ................................................................................................................. 58
10.4.4 Current Consumption in UART Bypass Mode .......................................................................... 58
10.5 USB Interface ........................................................................................................................................ 59
10.5.1 USB Data Connections ............................................................................................................. 59
10.5.2 USB Pull-Up Resistor ............................................................................................................... 59
10.5.3 Power Supply ............................................................................................................................ 59
10.5.4 Self-Powered Mode .................................................................................................................. 60
10.5.5 Bus-Powered Mode .................................................................................................................. 61
10.5.6 Suspend Current ....................................................................................................................... 62
d4613693732023-05-17老文档了以前都有 现在不好找
