Product Specs

36 QDEC — Quadrature decoder
Page
356
Bit number
Id
Reset 0x00000000
31 30
0 0
29
0
28
0
27
0
26
0
25
0
24
0
23 22 21 20
0 0 0 0
19
0
18
0
17
0
16
0
15
0
14
0
13
0
12
0
11
0
10
0
9
0
8
0
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
A
0
Id RW Field
Value Id
Value
Description
A RW DBFEN
Enable input debounce filters
Disabled
0
Debounce input filters disabled
Enabled
1
Debounce input filters enabled
36.7.15 LEDPRE
Address offset: 0x540
Time period the LED is switched ON prior to sampling
Bit number
Id
Reset 0x00000010
31 30
0 0
29
0
28
0
27
0
26
0
25
0
24
0
23 22 21 20
0 0 0 0
19
0
18
0
17
0
16
0
15
0
14
0
13
0
12
0
11
0
10
0
9
0
8
A
0
7
A
0
6
A
0
5
A
0
4
A
1
3
A
0
2
A
0
1
A
0
0
A
0
Id RW Field
Value Id
Value
Description
A RW LEDPRE [1..511] Period in us the LED is switched on prior to sampling
36.7.16 ACCDBL
Address offset: 0x544
Register accumulating the number of detected double transitions
Bit number
Id
Reset 0x00000000
31 30
0 0
29
0
28
0
27
0
26
0
25
0
24
0
23 22 21 20
0 0 0 0
19
0
18
0
17
0
16
0
15
0
14
0
13
0
12
0
11
0
10
0
9
0
8
0
7
0
6
0
5
0
4
0
3
A
0
2
A
0
1
A
0
0
A
0
Id RW Field
Value Id
Value
Description
A R ACCDBL
[0..15]
Register accumulating the number of detected double or illegal
transitions. ( SAMPLE = 2 ).
When this register has reached its maximum value the
accumulation of double / illegal transitions will stop. An
overflow event ( ACCOF ) will be generated if any double or
illegal transitions are detected after the maximum value was
reached. This field is cleared by triggering the READCLRACC or
RDCLRDBL task.
36.7.17 ACCDBLREAD
Address offset: 0x548
Snapshot of the ACCDBL, updated by the READCLRACC or RDCLRDBL task
Bit number
Id
Reset 0x00000000
31 30
0 0
29
0
28
0
27
0
26
0
25
0
24
0
23 22 21 20
0 0 0 0
19
0
18
0
17
0
16
0
15
0
14
0
13
0
12
0
11
0
10
0
9
0
8
0
7
0
6
0
5
0
4
0
3
A
0
2
A
0
1
A
0
0
A
0
Id RW Field
Value Id
Value
Description
A R ACCDBLREAD [0..15] Snapshot of the ACCDBL register. This field is updated when the
READCLRACC or RDCLRDBL task is triggered.
36.8 Electrical specification
36.8.1 QDEC Electrical Specification
Symbol
Description
Min.
Typ.
Max.
Units
I
QDEC
Run current
5
µA
t
SAMPLE
Time between sampling signals from quadrature decoder
128
131072
µs
t
LED
Time from LED is turned on to signals are sampled
0
511
µs