SAM3X8E Atmel Corporation, SAM3X8E Datasheet - Page 884

• Manufacturer Part Number: SAM3X8E
• Manufacturer: Atmel Corporation

Figure 36-15. Predefined Connection of the Quadrature Decoder with Timer Counters
36.6.14.2
884
884
TIOA0
TIOB0
TIOB1
SAM3X/A
SAM3X/A
Input Pre-processing
PHA
PHB
IDX
(Filter + Edge
Detect + QD)
Quadrature
Decoder
Interruptions can be generated on different events.
A compare function (using TC_RC register) is available on channel 0 (speed/position) or chan-
nel 1 (rotation) and can generate an interrupt by means of the CPCS flag in the TC_SR
registers.
Input pre-processing consists of capabilities to take into account rotary sensor factors such as
polarities and phase definition followed by configurable digital filtering.
Each input can be negated and swapping PHA, PHB is also configurable.
PHEdges
Index
Direction
TIOA0
TIOB0
TIOB1
1
QDEN
SPEEDEN
1
1
1
QDEN
TIOA
TIOB
XC0
TIOB
XC0
1
1
Reset pulse
XC0
XC0
Speed Time Base
Timer/Counter
Channel 0
Speed/Position
Timer/Counter
Channel 1
Rotation
Timer/Counter
Channel 2
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12