Texas Instruments TMS320C645X Manual de usuario descargar pdf (Pagina 21)

Registers

21General-Purpose Input/Output (GPIO)SPRU724

5.6 Input Data Register (IN_DATA)

The GPIO input data register (IN_DATA) reflects the state of the GPIO pins.

The IN_DATA register is shown in Figure 8 and described in Table 8. When

read, IN_DATA returns the state of the GPIO pins regardless of the state of the

corresponding bits in the DIR and OUT_DATA registers.

Figure 8. Input Data Register (IN_DATA)

31 16

Reserved

R-0

15 14 13 12 11 10 9 8

IN15 IN14 IN13 IN12 IN11 IN10 IN9 IN8

R-0 R-0 R-0 R-0 R-0 R-0 R-0 R-0

76543210

IN7 IN6 IN5 IN4 IN3 IN2 IN1 IN0

R-0 R-0 R-0 R-0 R-0 R-0 R-0 R-0

Legend: R = Read only; R/W = Read/Write; -n = value after reset

Table 8. Input Data Register (IN_DATA) Field Descriptions

Bit Field Value Description

31−16 Reserved 0 Reserved. The reserved bit location is always read as 0. A value written to

this field has no effect.

15−0 INn Returns the status of the corresponding GPn pin.

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 27

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Texas Instruments TMS320C645X Manual de usuario Pagina 21