6 input data register (in_data) – Texas Instruments TMS320C645X User Manual
Page 21
Registers
21
General-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
7
6
5
4
3
2
1
0
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.