PXN20RM Datasheet, PDF (215/1376 Pages) Freescale Semiconductor, Inc – PXN20 Microcontroller

System Integration Unit (SIU)
8.3.2.17 IMUX Select Register 2 (SIU_ISEL2)
The SIU_ISEL2 register selects the source for the external interrupt. The selection is made in conjunction
with SIU_ISEL1 and SIU_ISEL2A. Figure 8-72 shows how ISEL1, ISEL2, and ISEL2A interact.
Offset: SIU_BASE + 0x0908
R
W
Reset
0
1
ESEL15
0
0
2
3
ESEL14
0
0
4
5
ESEL13
0
0
6
7
ESEL12
0
0
8
9
ESEL11
00
10
11
ESEL10
00
Access: User read/write
12
13
14
15
ESEL9
ESEL8
0
0
0
0
R
W
Reset
16
17
ESEL7
0
0
18
19
ESEL6
20
21
ESEL5
22
23
ESEL4
24
25
ESEL3
26
27
ESEL2
0
0
0
0
0
0
0000
Figure 8-20. IMUX Select Register 2 (SIU_ISEL2)
Table 8-22. SIU_ISEL2 Field Descriptions
Field
Description
ESEL15
ESEL14
ESEL13
ESEL12
ESEL11
ESEL10
External IRQ Input Select 15. Specifies input for IRQ15.
00 PE15 pin.
01 PF15 pin.
10 PG15 pin.
11 ISEL2A.
External IRQ Input Select 14. Specifies input for IRQ14.
00 PE14 pin.
01 PF14 pin.
10 PG14 pin.
11 ISEL2A.
External IRQ Input Select 13. Specifies input for IRQ13.
00 PE13 pin.
01 PF13 pin.
10 PG13 pin.
11 ISEL2A.
External IRQ Input Select 12. Specifies input for IRQ12.
00 PE12 pin.
01 PF12 pin.
10 PG12 pin.
11 ISEL2A.
External IRQ Input Select 11. Specifies input for IRQ11.
00 PE11 pin.
01 PF11 pin.
10 PG11 pin.
11 ISEL2A.
External IRQ Input Select 10. Specifies input for IRQ10.
00 PE10 pin.
01 PF10 pin.
10 PG10 pin.
11 ISEL2A.
28
29
ESEL1
00
30
31
ESEL0
0
0
Freescale Semiconductor
PXN20 Microcontroller Reference Manual, Rev. 1
8-33