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TMP32C6411ZLZ Datasheet(PDF) 60 Page - Texas Instruments |
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TMP32C6411ZLZ Datasheet(HTML) 60 Page - Texas Instruments |
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60 / 119 page  TMS320C6411 FIXEDPOINT DIGITAL SIGNAL PROCESSOR SPRS196H − MARCH 2002 − REVISED JULY 2004 60 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 general-purpose input/output (GPIO) To use the GP[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 7 shows the GPIO enable bits in the GPEN register for the C6411 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 7 for the C6411 default configuration. 31 24 23 16 Reserved R-0 15 14 13 12 11 10 9 8 7 6543 210 GP15 EN GP14 EN GP13 EN GP12 EN GP11 EN GP10 EN GP9 EN GP8 EN GP7 EN GP6 EN GP5 EN GP4 EN GP3 EN GP2 EN GP1 EN GP0 EN R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-1 R/W-1 R/W-1 R/W-1 R/W-1 R/W-0 R/W-0 R/W-1 Legend: R/W = Readable/Writeable; -n = value after reset, -x = undefined value after reset Figure 7. GPIO Enable Register (GPEN) [Hex Address: 01B0 0000] Figure 8 shows the GPIO direction bits in the GPDIR register. This register determines if a given GPIO pin is an input or an output providing the corresponding GPxEN bit is enabled (set to “1”) in the GPEN register. By default, all the GPIO pins are configured as input pins. 31 24 23 16 Reserved R-0 15 14 13 12 11 10 98 7 6 5 43 2 10 GP15 DIR GP14 DIR GP13 DIR GP12 DIR GP11 DIR GP10 DIR GP9 DIR GP8 DIR GP7 DIR GP6 DIR GP5 DIR GP4 DIR GP3 DIR GP2 DIR GP1 DIR GP0 DIR R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 Legend: R/W = Readable/Writeable; -n = value after reset, -x = undefined value after reset Figure 8. GPIO Direction Register (GPDIR) [Hex Address: 01B0 0004] For more detailed information on general-purpose inputs/outputs (GPIOs), see the TMS320C6000 DSP General-Purpose Input/Output (GPIO) Reference Guide (literature number SPRU584). |
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