Maxq family user’s guide: maxq2010 supplement – Maxim Integrated MAXQ Family Users Guide: MAXQ2010 Supplement User Manual
Page 51
MAXQ Family User’s Guide:
MAXQ2010 Supplement
6-13
6.1.28 External Interrupt Edge Select 0 Register (EIES0, M0[0Ch])
Each bit in this register controls the edge select mode for an external interrupt as follows:
0 = The external interrupt triggers on a rising (positive) edge.
1 = The external interrupt triggers on a negative (falling) edge.
Bit 7: Edge Select for External Interrupt 7 (IT7)
Bit 6: Edge Select for External Interrupt 6 (IT6)
Bit 5: Edge Select for External Interrupt 5 (IT5)
Bit 4: Edge Select for External Interrupt 4 (IT4)
Bit 3: Edge Select for External Interrupt 3 (IT3)
Bit 2: Edge Select for External Interrupt 2 (IT2)
Bit 1: Edge Select for External Interrupt 1 (IT1)
Bit 0: Edge Select for External Interrupt 0 (IT0)
6.1.29 External Interrupt Edge Select 1 Register (EIES1, M1[0Bh])
Each bit in this register controls the edge select mode for an external interrupt as follows:
0 = The external interrupt triggers on a rising (positive) edge.
1 = The external interrupt triggers on a negative (falling) edge.
Bit 7: Reserved
Bit 6: Edge Select for External Interrupt 14 (IT14)
Bit 5: Edge Select for External Interrupt 13 (IT13)
Bit 4: Edge Select for External Interrupt 12 (IT12)
Bit 3: Edge Select for External Interrupt 11 (IT11)
Bit 2: Edge Select for External Interrupt 10 (IT10)
Bit 1: Edge Select for External Interrupt 9 (IT9)
Bit 0: Edge Select for External Interrupt 8 (IT8)
Bit #
7
6
5
4
3
2
1
0
Name
IT7
IT6
IT5
IT4
IT3
IT2
IT1
IT0
Reset
0
0
0
0
0
0
0
0
Access
rw
rw
rw
rw
rw
rw
rw
rw
Bit #
7
6
5
4
3
2
1
0
Name
—
IT14
IT13
IT12
IT11
IT10
IT9
IT8
Reset
0
0
0
0
0
0
0
0
Access
r
rw
rw
rw
rw
rw
rw
rw