Datasheet

GIO Control Registers

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25.5.2 GIO Interrupt Detect Register (GIOINTDET)

The GIOINTDET register provides the flexibility to either ignore the polarity of the edges that are

recognized as an interrupt, in which case both rising and falling edges are recognized, or recognizing the

interrupt on specifically a rising or falling edge as determined by the GIOPOL register. To ensure

recognition of the signal as an edge, the signal must maintain the new level for at least one VCLK cycle.

Figure 25-6 and Table 25-3 describe this register.

Figure 25-6. GIO Interrupt Detect Register (GIOINTDET) [offset = 08h]

31 24 23 16

GIOINTDET 3 GIOINTDET 2

R/W-0 R/W-0

15 8 7 0

GIOINTDET 1 GIOINTDET 0

R/W-0 R/W-0

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

Table 25-3. GIO Interrupt Detect Register (GIOINTDET) Field Descriptions

Bit Field Value Description

31-24 GIOINTDET 3 Interrupt detection select for pins GIOD[7:0]

0 The flag sets on either a falling or a rising edge on the corresponding pin, depending on the polarity

setup in the polarity register (GIOPOL).

1 The flag sets on both the rising and falling edges on the corresponding pin.

23-16 GIOINTDET 2 Interrupt detection select for pins GIOC[7:0]

0 The flag sets on either a falling or a rising edge on the corresponding pin, depending on the polarity

setup in the polarity register (GIOPOL).

1 The flag sets on both the rising and falling edges on the corresponding pin.

15-8 GIOINTDET 1 Interrupt detection select for pins GIOB[7:0]

0 The flag sets on either a falling or a rising edge on the corresponding pin, depending on the polarity

setup in the polarity register (GIOPOL).

1 The flag sets on both the rising and falling edges on the corresponding pin.

7-0 GIOINTDET 0 Interrupt detection select for pins GIOA[7:0]

0 The flag sets on either a falling or a rising edge on the corresponding pin, depending on the polarity

setup in the polarity register (GIOPOL).

1 The flag sets on both the rising and falling edges on the corresponding pin.

1126

General-Purpose Input/Output (GIO) Module SPNU562–May 2014

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