TM4C1233C3PM Datasheet, PDF (298/1214 Pages) Texas Instruments – Tiva Microcontroller

System Control
Register 39: Quadrature Encoder Interface Peripheral Present (PPQEI), offset
0x344
The PPQEI register provides software information regarding the QEI modules.
Important: This register should be used to determine which QEI modules are implemented on this
microcontroller. However, to support legacy software, the DC2 register is available. A
read of the DC2 register correctly identifies if a legacy QEI module is present.
Quadrature Encoder Interface Peripheral Present (PPQEI)
Base 0x400F.E000
Offset 0x344
Type RO, reset 0x0000.0000
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
reserved
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
reserved
P1
P0
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
31:2
1
Name
reserved
P1
Type
RO
RO
Reset
0
0x0
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.
QEI Module 1 Present
Value Description
0 QEI module 1 is not present.
1 QEI module 1 is present.
0
P0
RO
0x0
QEI Module 0 Present
Value Description
0 QEI module 0 is not present.
1 QEI module 0 is present.
298
June 12, 2014
Texas Instruments-Production Data