TMS320C6711 datasheet(56/129 Pages) TI

56 / 129 page

TMS320C6711, TMS320C6711B, TMS320C6711C, TMS320C6711D

FLOATING-POINT DIGITAL SIGNAL PROCESSORS

SPRS088L − FEBRUARY 1999 − REVISED MAY 2004

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251−1443

general-purpose input/output (GPIO) [11C/11D only]

To use the GP[7:4, 2] 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 =

GP[x] pin is enabled

GPxDIR =

GP[x] pin is an input

GPxDIR =

GP[x] pin is an output

where “x” represents one of the 7 through 4, or 2 GPIO pins

Figure 11 shows the GPIO enable bits in the GPEN register for the C6711C/C6711D 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 11 for the C6711C/C6711D default configuration.

24 23

Reserved

R-0

6543

210

Reserved

GP7

GP6

GP5

GP4

—

GP2

—

R/W-0

R/W-1 R/W-1 R/W-1 R/W-1 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 11. GPIO Enable Register (GPEN) [Hex Address: 01B0 0000]

Figure 12 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.

24 23

Reserved

R-0

6543

210

Reserved

GP7

DIR

GP6

DIR

GP5

DIR

GP4

DIR

—

GP2

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 12. 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).

TMS320C6711 Datasheet(PDF) 56 Page - Texas Instruments

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