Datasheet

Signal Description
MOTOROLA MCF5206e USER’S MANUAL 2-7
2.4.1 Interrupt Priority Level/ Interrupt Request (IPL[2]/IRQ[7],IPL[1]/
IRQ
[4], IPL[0]/IRQ[1])
You can program these three active-low input pins as either interrupt priority level signals
(IPL
[2:0]) or predefined interrupt request pins (IRQ[7], IRQ[4], IRQ[1]). Programming the
Pin Assignment Register (PAR) in the SIM determines the function of these pins. During
reset, these pins are configured to be predefined interrupt requests.
When these pins are programmed to be interrupt priority level signals, IPL[2:0] signals the
priority level (7-1) of an external interrupt; IPL
[2:0]=000 (level 7) indicates the highest
unmaskable interrupt, while IPL[2:0]=111 (level 0) indicates no interrupt request. When
these pins are programmed to be interrupt request signals, the assertion of IRQ
[7]
generates a level 7 interrupt, IRQ
[4] generates a level 4 interrupt, and IRQ[1] generates
a level 1 interrupt, as shown in Table 2-4.
LONGWORD
8 bit
001
000111
010111
100111
110111
100
000111
010111
100111
110111
16 bit
010
000011
100011
100
000011
100011
32 bit
0 00000000
1 00000000
LINE
8 bit
001
000111
010111
100111
110111
111
000111
010111
100111
110111
16 bit
010
000011
100011
111
000011
100011
32-Bit
0 00000000
1 11000000
Table 2-3. Byte Write Enable Signals (Continued)
TRANSFER SIZE PORT SIZE BURST SIZ[1] SIZ[0] A1 A0
WE
[0] WE[1] WE[2] WE[3]
D31-D24 D23-D16 D15-D8 D7-D0
Fr
eescale S
emiconduct
or
, I
Freescale Semiconductor, Inc.
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