LM3S818 Luminary Micro, Inc, LM3S818 Datasheet - Page 358

• Manufacturer Part Number: LM3S818
• Description: Lm3s818 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

Quadrature Encoder Interface (QEI)
358
Reset
Reset
Type
Type
Bit/Field
31:4
QEI Raw Interrupt Status (QEIRIS)
Offset 0x024
3
2
1
0
RO
RO
31
15
0
0
Register 10: QEI Raw Interrupt Status (QEIRIS), offset 0x024
This register provides the current set of interrupt sources that are asserted, regardless of whether
they cause an interrupt to be asserted to the controller (this is set through the QEIINTEN register).
Bits set to 1 indicate the latched events that have occurred; a zero bit indicates that the event in
question has not occurred.
RO
RO
30
14
0
0
reserved
IntTimer
IntIndex
IntError
Name
IntDir
RO
RO
29
13
0
0
RO
RO
28
12
0
0
Type
RO
RO
RO
RO
RO
RO
RO
27
11
0
0
RO
RO
26
10
0
0
reserved
Reset
RO
RO
25
0
9
0
0
0
0
0
0
Preliminary
RO
RO
24
0
8
0
reserved
Description
Reserved bits return an indeterminate value, and should
never be changed.
Indicates that a phase error was detected.
Indicates that the direction has changed.
Indicates that the velocity timer has expired.
Indicates that the index pulse has occurred.
RO
RO
23
0
7
0
RO
RO
22
0
6
0
RO
RO
21
0
5
0
RO
RO
20
0
4
0
IntError
RO
RO
19
0
3
0
IntDir
RO
RO
18
0
2
0
February 6, 2007
IntTimer
RO
RO
17
0
1
0
IntIndex
RO
RO
16
0
0
0