Outlines - Toshiba TXZ Series Reference Manual

1. Outlines

One unit of Advanced encoder input circuit (32-bit) (hereafter ENC) operates as one channel input circuit
(ENCxA/ENCxB/ENCxZ). The list of the functions is shown in the following table.
Function
category
Sensor input
General purpose
timer
Phase counter mode
(Phase measurement)
Phase counter
Phase counter mode
(Phase difference
Noise cancellation
2018-10-11
Function
An incremental encoder of AB or ABZ type is connected in this mode.
- The rotation edge is detected and the rotation direction is judged by
combination of ENCxA and ENCxB inputs.
Encoder mode
- The counter counts up or down depending on the rotation direction.
- The maximum count number per cycle is 2
- ENCxZ input logic is selectable.
2-phase or 3-phase hall IC (U, V, or W) is connected in this mode.
- The rotation edge is detected and the rotation direction is judged by
Sensor mode
combination of 2-phase or 3-phase signals.
(Event count)
- The counter counts up or down depending on the rotation direction.
- The maximum count number is 2
2-phase or 3-phase hall IC (U, V, or W) is connected in this mode.
- The rotation edge is detected and the rotation direction is judged by
combination of 2-phase or 3-phase signals.
- The interval of the rotation edge detection can be measured by the 32-bit
Sensor mode
counter.
(Timer count)
- Comparison function: Commutation trigger of PMD circuit synchronous with
the edge detection can be generated.
- Sensor-less control of a pulse driven brushless DC (BLDC) motor is
supported by PWM synchronous sampling.
2-phase or 3-phase hall IC (U, V, or W) is connected in this mode.
- The rotation edge is detected and the rotation direction is judged by
combination of 2-phase or 3-phase signals.
Sensor mode
- The interval of the rotation edge detection can be measured by the 32-bit
(Phase count)
counter.
- The counter operates with any frequency clock and the count-up and
count-down can be selected.
This circuit is used as a 32-bit timer operating with the system clock (fsys) in
this mode.
- ENCxZ input edge detection can be done.
Timer mode
- The interval of the rotation edge detection can be measured by the 32-bit
counter.
- An interrupt can be generated by the comparison function.
This circuit is used as a 32-bit counter operating with any frequency clock in
this mode.
- ENCxZ input edge detection can be done.
- The interval of the rotation edge detection can be measured by the 32-bit
counter.
- An interrupt can be generated by the comparison function.
This circuit is used as a 32-bit counter operating with any frequency clock in
this mode. The phase difference between the general purpose timer output
measurement) and ENCxZ input can be measured.
The sampling by fsys division clock or a signal synchronous with PWM
signal can be done.
Input circuit
- The interval of the noise cancellation can be selected.
Advanced Encoder Input Circuit(32-bit)
Operation
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TXZ Family
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Rev. 1.1