Texas Instruments TMS320C645x manual Input Data Register Indata

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Registers

5.6Input 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.

SPRU724

General-Purpose Input/Output (GPIO)

21

Image 21

Contents Literature Number SPRU724 December Important Notice About This Manual Read This FirstTrademarks Contents Figures Tables This page is intentionally left blank Overview General-PurposeTMS320C645x DSP Block Diagram Gpio Peripheral Block Diagram Gpio Function Interrupt and Event Generation Gpio Interrupt and Edma Event Configuration OptionsEmulation Halt Operation Gpio Registers RegistersInterrupt Per-Bank Enable Register Binten Interrupt Per-Bank Enable Register BintenDirection Register DIR Direction Register DIRDirection Register DIR Field Descriptions Output Data Register Outdata Field Descriptions Output Data Register OutdataSet Data Register Setdata Field Descriptions Set Data Register SetdataClear Data Register Clrdata Clear Data Register ClrdataClear Data Register Clrdata Field Descriptions Input Data Register Indata Field Descriptions Input Data Register IndataSet Rising Edge Interrupt Register Setristrig Set Rising Edge Interrupt Register SetristrigClear Rising Edge Interrupt Register Clrristrig Clear Rising Edge Interrupt Register ClrristrigSet Falling Edge Interrupt Register Setfaltrig Set Falling Edge Interrupt Register SetfaltrigClear Falling Edge Interrupt Register Clrfaltrig Clear Falling Edge Interrupt Register ClrfaltrigThis page is intentionally left blank Index

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