Freescale Semiconductor MPC5604B - Page 348

MPC5604B/C Microcontroller Reference Manual, Rev. 8
Freescale Semiconductor 337
19.5.3.6 Interrupt Falling-Edge Event Enable Register (IFEER)
This register is used to enable falling-edge triggered events on the corresponding interrupt pads.
NOTE
If both the IREER[IREE] and IFEER[IFEE] bits are cleared for the same
interrupt source, the interrupt status flag for the corresponding external
interrupt will never be set. If IREER[IREE] and IFEER[IFEE] bits are set
for the same source the interrupts are triggered by both rising edge events
and falling edge events.
Table 19-7. IREER field descriptions
Field Description
IREE[x] Enable rising-edge events to cause the ISR[EIF[x]] bit to be set.
0 Rising-edge event is disabled
1 Rising-edge event is enabled
Offset:0x002C Access: User read/write
0123456789101112131415
R0000000000000000
W
Reset0000000000000000
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R
IFEE[15:0]
1
1
IFEE[15:0] in 144-pin LQFP and 208 MAPBGA packages; IFEE[11:0] in 100-pin LQFP package.
W
Reset0000000000000000
Figure 19-7. Interrupt Falling-Edge Event Enable Register (IFEER)
Table 19-8. IFEER field descriptions
Field Description
IFEE[x] Enable falling-edge events to cause the ISR[EIF[x]] bit to be set.
0 Falling-edge event is disabled
1 Falling-edge event is enabled