Motorola MCF5281 사용자 설명서
MOTOROLA
Chapter 11. Edge Port Module (EPORT)
11-1
Chapter 11
Edge Port Module (EPORT)
11.1 Introduction
The edge port module (EPORT) has seven external interrupt pins, IRQ7–IRQ1.
Each pin
can be configured individually as a level-sensitive interrupt pin, an edge-detecting interrupt
pin (rising edge, falling edge, or both), or a general-purpose input/output (I/O) pin. See
Figure 11-1.
pin (rising edge, falling edge, or both), or a general-purpose input/output (I/O) pin. See
Figure 11-1.
Figure 11-1. EPORT Block Diagram
11.2 Low-Power Mode Operation
This section describes the operation of the EPORT module in low-power modes. For more
information on low-power modes, see Chapter 7, “Power Management.” Table 11-1 shows
EPORT module operation in low-power modes, and describes how this module may exit
from each mode.
information on low-power modes, see Chapter 7, “Power Management.” Table 11-1 shows
EPORT module operation in low-power modes, and describes how this module may exit
from each mode.
IPBUS
Synchronizer
EPDR[n]
EPFR[n]
EPPAR[2n, 2n + 1]
EPIER[n]
Edge Detect
D0
Stop
Logic
EPPDR[n]
D1
Q
D0
D1
Q
Mode
EPDDR[n]
To Interrupt
Controller
IRQx PIN
Rising Edge
of System Clock