BLUECORE4-ROM datasheet(3/89 Pages) ETC

3 / 89 page

Contents

BC41B143A-ds-002Pd

This material is subject to CSR’s non-disclosure agreement

Production Information

Page 3 of 89

8.6.1 Memory Management Unit......................................................................................................... 40

8.6.2 Burst Mode Controller ................................................................................................................ 40

8.6.3 Physical Layer Hardware Engine DSP....................................................................................... 40

8.6.4 RAM ........................................................................................................................................... 40

8.6.5 ROM........................................................................................................................................... 40

8.6.6 USB............................................................................................................................................ 41

8.6.7 Synchronous Serial Interface ..................................................................................................... 41

8.6.8 UART ......................................................................................................................................... 41

8.6.9 Audio PCM Interface .................................................................................................................. 41

8.7 Microcontroller ....................................................................................................................................... 41

8.7.1 Programmable I/O...................................................................................................................... 41

8.7.2 802.11 Coexistence Interface .................................................................................................... 41

CSR Bluetooth Software Stacks ................................................................................................................. 42

9.1 BlueCore HCI Stack .............................................................................................................................. 42

9.1.1 Key Features of the HCI Stack – Standard Bluetooth Functionality ........................................... 42

9.1.2 Key Features of the HCI Stack - Extra Functionality .................................................................. 44

9.2 BCHS Software ..................................................................................................................................... 45

9.3 Additional Software for Other Embedded Applications .......................................................................... 45

9.4 CSR Development Systems .................................................................................................................. 45

10 Enhanced Data Rate .................................................................................................................................... 46

10.1 Enhanced Data Rate Baseband ............................................................................................................ 46

10.2 Enhanced Data Rate

π/4 DQPSK.......................................................................................................... 46

10.3 Enhanced Data Rate 8DPSK................................................................................................................. 47

11 Device Terminal Descriptions..................................................................................................................... 49

11.1 RF_A and RF_B .................................................................................................................................... 49

11.1.1 Transmit RF Power Control for Class 1 Applications ................................................................. 50

11.1.2 Control of External RF Components .......................................................................................... 51

11.2 External Reference Clock Input (XTAL_IN) ........................................................................................... 51

11.2.1 External Mode ............................................................................................................................ 51

11.2.2 XTAL_IN Impedance in External Mode ...................................................................................... 52

11.2.3 Clock Timing Accuracy............................................................................................................... 52

11.2.4 Clock Start-Up Delay.................................................................................................................. 52

11.2.5 Input Frequencies and PS Key Settings..................................................................................... 53

11.3 Crystal Oscillator (XTAL_IN, XTAL_OUT) ............................................................................................. 54

11.3.1 XTAL Mode ................................................................................................................................ 54

11.3.2 Load Capacitance ...................................................................................................................... 55

11.3.3 Frequency Trim .......................................................................................................................... 55

11.3.4 Transconductance Driver Model ................................................................................................ 56

11.3.5 Negative Resistance Model ....................................................................................................... 56

11.3.6 Crystal PS Key Settings ............................................................................................................. 57

11.3.7 Crystal Oscillator Characteristics ............................................................................................... 57

11.4 UART Interface...................................................................................................................................... 60

11.4.1 UART Bypass............................................................................................................................. 62

11.4.2 UART Configuration while RESETB is Active ............................................................................ 62

11.4.3 UART Bypass Mode................................................................................................................... 62

11.5 USB Interface ........................................................................................................................................ 63

11.5.1 USB Data Connections .............................................................................................................. 63

11.5.2 USB Pull-Up Resistor................................................................................................................. 63

11.5.3 Power Supply ............................................................................................................................. 63

11.5.4 Self-powered Mode .................................................................................................................... 63

11.5.5 Bus-powered Mode .................................................................................................................... 64

11.5.6 Suspend Current ........................................................................................................................ 65

11.5.7 Detach and Wake-Up Signalling ................................................................................................ 65

11.5.8 USB Driver ................................................................................................................................. 65

11.5.9 USB Compliance........................................................................................................................ 66

11.5.10

USB 2.0 Compatibility.......................................................................................................... 66

11.6 Serial Peripheral Interface ..................................................................................................................... 66

11.6.1 Instruction Cycle......................................................................................................................... 66

11.6.2 Writing to BlueCore4-ROM CSP ................................................................................................ 67

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