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SMX320C6413ZTS500 Datasheet(PDF) 79 Page - Texas Instruments |
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SMX320C6413ZTS500 Datasheet(HTML) 79 Page - Texas Instruments |
79 / 140 page General-Purpose Input/Output (GPIO) 79 April 2004 − Revised May 2005 SPRS247E Figure 4−3 is a block diagram of the I2C0 and I2C1 modules. Clock Prescale I2CPSCx Peripheral Clock (CPU/4) I2CCLKHx Generator Bit Clock I2CCLKLx Noise Filter SCL I2CXSRx I2CDXRx Transmit Transmit Shift Transmit Buffer I2CDRRx Shift I2CRSRx Receive Buffer Receive Receive Filter SDA I2C Data Noise I2COARx I2CSARx Slave Address Control Address Own I2CMDRx I2CCNTx Mode Data Count Source Interrupt Interrupt Status I2CISRCx I2CSTRx Enable Interrupt I2CIERx Interrupt/DMA I2Cx Module NOTE A: Shading denotes control/status registers. I2C Clock I2CEMDRx I2CPFUNCx I2CPDIRx I2CPDINx I2CPDOUTx I2CPDSETx I2CPDCLRx GPIO Control Function Pin Direction Pin In Pin Data Out Pin Data Set Pin Data Clear Pin Data Extended Mode Figure 4−3. I2Cx Module Block Diagram 4.5 General-Purpose Input/Output (GPIO) On the C6413/C6410 device the GPIO peripheral pins GP0[15:9] are muxed with the HPI peripheral pins HD[15:9], respectively. By default, the HPI peripheral pin functions are enabled [TOUT0/HPI_EN pin internall pulled low]. For more detailed information on device/peripheral configuration and the C6413/C6410 device pin muxing, see the Device Configurations section of this data sheet. To use the GP0[15:0] software-configurable GPIO pins, the GPxEN bits in the GP Enable (GPEN) Register and the GPxDIR bits in the GP Direction (GPDIR) Register must be properly configured. GPxEN = 1 GP[x] pin is enabled GPxDIR = 0 GP[x] pin is an input GPxDIR = 1 GP[x] pin is an output where “x” represents one of the 15 through 0 GPIO pins Figure 4−4 shows the GPIO enable bits in the GPEN register for the C6413/C6410 device. To use any of the GPx pins as general-purpose input/output functions, the corresponding GPxEN bit must be set to “1” (enabled). Default values are device-specific, so refer to Figure 4−4 for the C6413/C6410 default configuration. |
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