LM3S3749 Luminary Micro, Inc, LM3S3749 Datasheet - Page 672

• Manufacturer Part Number: LM3S3749
• Description: Lm3s3749 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

Reset
Reset
Type
Type
Quadrature Encoder Interface (QEI)
QEI Raw Interrupt Status (QEIRIS)
QEI0 base: 0x4002.C000
Offset 0x024
Type RO, reset 0x0000.0000
672
Bit/Field
31:4
RO
RO
3
2
1
0
31
15
0
0
RO
RO
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.
30
14
0
0
RO
RO
29
13
reserved
0
0
IntTimer
IntIndex
IntError
Name
IntDir
RO
RO
28
12
0
0
RO
RO
27
11
0
0
Type
RO
RO
RO
RO
RO
RO
RO
26
10
0
0
reserved
RO
RO
Reset
25
0x00
0
9
0
0
0
0
0
Preliminary
RO
RO
24
0
8
0
reserved
Description
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
Phase Error Detected
Indicates that a phase error was detected.
Direction Change Detected
Indicates that the direction has changed.
Velocity Timer Expired
Indicates that the velocity timer has expired.
Index Pulse Asserted
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
IntTimer
RO
RO
17
0
1
0
June 02, 2008
IntIndex
RO
RO
16
0
0
0