Cypress Semiconductor FX2LP Información técnica Pagina 93

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Chapter 4. Interrupts Page 4-3
Table 4-3. IP Register — SFR 0xB8
Bit Function
IP.7
Reserved
. Read as 1.
IP.6 PS1 - Serial Port 1 interrupt priority control. PS1 = 0 sets Serial Port 1 interrupt
(TI_1 or RI_1) to low priority. PS1 = 1 sets Serial port 1 interrupt to high priority.
IP.5
PT2
- Timer 2 interrupt priority control. PT2 = 0 sets Timer 2 interrupt (TF2) to low
priority. PT2 = 1 sets Timer 2 interrupt to high priority.
IP.4 PS0 - Serial Port 0 interrupt priority control. PS0 = 0 sets Serial Port 0 interrupt
(TI_0 or RI_0) to low priority. PS0 = 1 sets Serial Port 0 interrupt to high priority.
IP.3
PT1
- Timer 1 interrupt priority control. PT1 = 0 sets Timer 1 interrupt (TF1) to low
priority. PT1 = 1 sets Timer 1 interrupt to high priority.
IP.2 PX1 - External interrupt 1 priority control. PX1 = 0 sets external interrupt 1 (INT1)
to low priority. PT1 = 1 sets external interrupt 1 to high priority.
IP.1 PT0 - Timer 0 interrupt priority control. PT0 = 0 sets Timer 0 interrupt (TF0) to low
priority. PT0 = 1 sets Timer 0 interrupt to high priority.
IP.0 PX0 - External interrupt 0 priority control. PX0 = 0 sets external interrupt 0 (INT0)
to low priority. PX0 = 1 sets external interrupt 0 to high priority.
Table 4-4. EXIF Register — SFR 0x91
Bit Function
EXIF.7 IE5 - External Interrupt 5 flag. IE5 = 1 indicates a falling edge was detected at the
INT5
pin. IE5 must be cleared by software. Setting IE5 in software generates an
interrupt, if enabled.
EXIF.6
IE4
- GPIF/FIFO/External Interrupt 4 flag. The “INT4” interrupt is internally con-
nected to the FIFO/GPIF interrupt by default; it can optionally function as Exter-
nal Interrupt 4 on the 100- and 128-pin FX2. When configured as External
Interrupt 4, IE4 indicates that a rising edge was detected at the INT4 pin. IE4
must be cleared by software. Setting IE4 in software generates an interrupt, if
enabled.
EXIF.5 I²CINT - I²C-Compatible Bus Interrupt flag. I²CINT = 1 indicates an I²C-Compati-
ble Bus interrupt. I²CINT must be cleared by software. Setting I²CINT in software
generates an interrupt, if enabled.
EXIF.4
USBINT
- USB Interrupt flag. USBINT = 1 indicates an USB interrupt. USBINT
must be cleared by software. Setting USBINT in software generates an interrupt,
if enabled.
EXIF.3 Reserved. Read as 1.
EXIF.2-0
Reserved
. Read as 0.
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