Cirrus Logic EP93xx User Manual

Page 168

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6-6

DS785UM1

Copyright 2007 Cirrus Logic

Vectored Interrupt Controller
EP93xx User’s Guide

6

6

6

UART1TXINTR1

UART 1 Transmit Interrupt. See

Chapter 14, "UART1 With

HDLC and Modem Control Signals"

.

UART1RXINTR2

UART 2 Receive Interrupt. See

Chapter 15

,

"UART2"

”.

UART1TXINTR2

UART 2 Transmit Interrupt. See

Chapter 15

,

"UART2"

”.

UART1RXINTR3

UART 3 Receive Interrupt. See

Chapter 16

,

"UART3 With

HDLC Encoder"

.

UART1TXINTR3

UART 3 Transmit Interrupt. See

Chapter 16

,

"UART3 With

HDLC Encoder"

.

INT_KEY

Key Matrix Interrupt. See

Chapter 26, "Keypad Interface".

INT_TOUCH

Touch Screen Controller Interrupt. This is the general
interrupt from the TSC. See

Chapter 25

,

"Analog Touch

Screen Interface"

.

INT_EXT[0]

External Interrupt 0.

INT_EXT[1]

External Interrupt 1.

INT_EXT[2]

External Interrupt 2.

TINTR

64Hz TICK Interrupt. This interrupt becomes active on
every rising edge of the internal 64Hz clock. The 64Hz
clock is derived from a 15-stage ripple counter that divides
the 32.768kHz oscillator input down to 1Hz for the real
time clock. This interrupt is cleared by writing any value to
the

“RTCSts”

register. See

Chapter 20

,

"Real Time Clock

With Software Trim"

WEINT

Watchdog Expired Interrupt. This interrupt will become
active on a rising edge of the periodic 64Hz tick interrupt
clock if the TICK interrupt (TINT) is still active. That is, if a
tick interrupt has not been serviced for a complete tick
period. Both WEINT and TINT interrupts are cleared by
writing any value to the

“RTCSts”

register, see

Chapter 20

,

"Real Time Clock With Software Trim"

. Failure to service

this interrupt does not cause a system reset and the action
taken on receipt of this interrupt is system dependent.

INT_RTC

Real Time Clock interrupt. See

Chapter 20

,

"Real Time

Clock With Software Trim"

.

INT_IrDA

IrDA Interrupt. See

Chapter 17

,

"IrDA"

.

INT_MAC

Ethernet MAC Interrupt. See

Chapter 9

,

"1/10/100 Mbps

Ethernet LAN Controller"

.

INT_PROG

Programmable Interrupt. See

Chapter 7

,

"Raster Engine

With Analog/LCD Integrated Timing and Interface"

.

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