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C8051F007 Datasheet(PDF) 5 Page - Silicon Laboratories |
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C8051F007 Datasheet(HTML) 5 Page - Silicon Laboratories |
5 / 171 page C8051F000/1/2/5/6/7 C8051F010/1/2/5/6/7 Figure 15.4. XBR1: Port I/O CrossBar Register 1 ........................................................................................107 Figure 15.5. XBR2: Port I/O CrossBar Register 2 ........................................................................................108 15.3. General Purpose Port I/O.................................................................................................................109 15.4. Configuring Ports Which are not Pinned Out..................................................................................109 Figure 15.6. P0: Port0 Register .....................................................................................................................109 Figure 15.7. PRT0CF: Port0 Configuration Register ....................................................................................109 Figure 15.8. P1: Port1 Register .....................................................................................................................110 Figure 15.9. PRT1CF: Port1 Configuration Register ....................................................................................110 Figure 15.10. PRT1IF: Port1 Interrupt Flag Register....................................................................................110 Figure 15.11. P2: Port2 Register ...................................................................................................................111 Figure 15.12. PRT2CF: Port2 Configuration Register ..................................................................................111 Figure 15.13. P3: Port3 Register ...................................................................................................................112 Figure 15.14. PRT3CF: Port3 Configuration Register ..................................................................................112 Table 15.2. Port I/O DC Electrical Characteristics........................................................................................112 16. SMBus / I2C Bus...............................................................................................................113 Figure 16.1. SMBus Block Diagram .............................................................................................................113 Figure 16.2. Typical SMBus Configuration ..................................................................................................114 16.1. Supporting Documents ....................................................................................................................114 16.2. Operation .........................................................................................................................................115 Figure 16.3. SMBus Transaction...................................................................................................................115 16.3. Arbitration .......................................................................................................................................116 16.4. Clock Low Extension ......................................................................................................................116 16.5. Timeouts ..........................................................................................................................................116 16.6. SMBus Special Function Registers..................................................................................................116 Figure 16.4. SMB0CN: SMBus Control Register ..........................................................................................118 Figure 16.5. SMB0CR: SMBus Clock Rate Register....................................................................................119 Figure 16.6. SMB0DAT: SMBus Data Register ...........................................................................................120 Figure 16.7. SMB0ADR: SMBus Address Register .....................................................................................120 Figure 16.8. SMB0STA: SMBus Status Register..........................................................................................121 Table 16.1. SMBus Status Codes ..................................................................................................................122 17. SERIAL PERIPHERAL INTERFACE BUS.................................................................123 Figure 17.1. SPI Block Diagram ...................................................................................................................123 Figure 17.2. Typical SPI Interconnection......................................................................................................124 17.1. Signal Descriptions..........................................................................................................................124 17.2. Operation .........................................................................................................................................125 Figure 17.3. Full Duplex Operation...............................................................................................................125 17.3. Serial Clock Timing.........................................................................................................................126 Figure 17.4. Data/Clock Timing Diagram.....................................................................................................126 17.4. SPI Special Function Registers........................................................................................................127 Figure 17.5. SPI0CFG: SPI Configuration Register......................................................................................127 Figure 17.6. SPI0CN: SPI Control Register ..................................................................................................128 Figure 17.7. SPI0CKR: SPI Clock Rate Register..........................................................................................129 Figure 17.8. SPI0DAT: SPI Data Register ....................................................................................................129 18. UART.................................................................................................................................130 Figure 18.1. UART Block Diagram ..............................................................................................................130 18.1. UART Operational Modes...............................................................................................................131 Table 18.1. UART Modes .............................................................................................................................131 Figure 18.2. UART Mode 0 Interconnect......................................................................................................131 Figure 18.3. UART Mode 0 Timing Diagram...............................................................................................131 Figure 18.4. UART Mode 1 Timing Diagram...............................................................................................132 Figure 18.5. UART Modes 1, 2, and 3 Interconnect Diagram ......................................................................133 Figure 18.6. UART Modes 2 and 3 Timing Diagram....................................................................................134 18.2. Multiprocessor Communications.....................................................................................................135 Figure 18.7. UART Multi-Processor Mode Interconnect Diagram ...............................................................135 5 Rev. 1.7 |
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