11.4.2 Common Flash Interface .......................................................................................................... 75
11.4.3 Memory Timing ......................................................................................................................... 76
11.5 UART Interface ...................................................................................................................................... 78
11.5.1 UART Bypass ........................................................................................................................... 80
11.5.2 UART Configuration While RESET is Active ............................................................................ 80
11.5.3 UART Bypass Mode ................................................................................................................. 80
11.5.4 Current Consumption in UART Bypass Mode .......................................................................... 80
11.6 USB Interface ........................................................................................................................................ 81
11.6.1 USB Data Connections ............................................................................................................. 81
11.6.2 USB Pull-Up Resistor ............................................................................................................... 81
11.6.3 Power Supply ............................................................................................................................ 81
11.6.4 Self-Powered Mode .................................................................................................................. 82
11.6.5 Bus-Powered Mode .................................................................................................................. 83
11.6.6 Suspend Current ....................................................................................................................... 84
11.6.7 Detach and Wake_Up Signalling .............................................................................................. 84
11.6.8 USB Driver ................................................................................................................................ 84
11.6.9 USB 1.1 Compliance ................................................................................................................ 85
11.6.10 USB 2.0 Compatibility ............................................................................................................... 85
11.7 Serial Peripheral Interface ..................................................................................................................... 86
11.7.1 Instruction Cycle ....................................................................................................................... 86
11.7.2 Writing to BlueCore4-External .................................................................................................. 87
11.7.3 Reading from BlueCore4-External ............................................................................................ 87
11.7.4 Multi-Slave Operation ............................................................................................................... 87
11.8 PCM CODEC Interface .......................................................................................................................... 88
11.8.1 PCM Interface Master/Slave ..................................................................................................... 89
11.8.2 Long Frame Sync ..................................................................................................................... 90
11.8.3 Short Frame Sync ..................................................................................................................... 90
11.8.4 Multi-slot Operation ................................................................................................................... 91
11.8.5 GCI Interface ............................................................................................................................ 91
11.8.6 Slots and Sample Formats ....................................................................................................... 92
11.8.7 Additional Features ................................................................................................................... 92
11.8.8 PCM Timing Information ........................................................................................................... 93
11.8.9 PCM Configuration ................................................................................................................... 98
11.9 I/O Parallel Ports ................................................................................................................................. 100
11.9.1 PIO Defaults for BlueCore4-External ...................................................................................... 100
11.10I2C Interface ........................................................................................................................................ 101
11.11TCXO Enable OR Function ................................................................................................................. 102
11.12RESETB .............................................................................................................................................. 103
11.12.1 Pin States on Reset ................................................................................................................ 103
11.12.2 Status after Reset ................................................................................................................... 104
11.13Power Supply ...................................................................................................................................... 105
11.13.1 Voltage Regulator ................................................................................................................... 105
11.13.2 Sequencing ............................................................................................................................. 105
11.13.3 Sensitivity to Disturbances ...................................................................................................... 105
12 Application Schematic ................................................................................................................................ 106
13 Package Dimensions .................................................................................................................................. 107
13.1 8 x 8mm TFBGA 96-Ball Package ...................................................................................................... 107
13.2 6 x 6mm VFBGA 96-Ball Package ...................................................................................................... 108
14 Ordering Information .................................................................................................................................. 109
14.1 BlueCore4-External ............................................................................................................................. 109
Production Information
© Cambridge Silicon Radio Limited 2005
BC417143B-ds-001Pg
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