Datasheet

Figure 41-8. AC Input Selection
Timer/Counter Inputs (TC)
The TC waveform output WO[0] can be used as input source for the LUT (LUTCTRLx.INSELy=TC). Only
consecutive instances of the TC, i.e. TCx and the subsequent TC(x+1), are available as default and
alternative TC selections (e.g., TC0 and TC1 are sources for LUT0, TC1 and TC2 are sources for LUT1,
etc). See the figure below for an example for LUT0. More general, the Timer/Counter selection for each
LUT follows the formula:
IN   =   % TC_Instance_Number
IN   =   + 1 % TC_Instance_Number
Where N represents the LUT number and i represents the LUT input index (i=0,1,2).
For devices with more than four TC instances, it is also possible to enable a second alternative option
(LUTCTRLx.INSEL=ALT2TC). This option is intended to relax the alternative pin function or PCB design
constraints when the default or the alternative TC instances are used for other purposes. When enabled,
the Timer/Counter selection for each LUT follows the formula:
IN   =       + 4 % TC_Instance_Number
Note that for not implemented TC_Instance_Number, the corresponding input is tied to ground.
Before selecting the waveform outputs, the TC must be configured first.
Figure 41-9. TC Input Selection
WO[0]
WO[0]
TC4
(second alternative)
WO[0]
TC1
TC0
(alternative)
(default)
SAM D5x/E5x Family Data Sheet
CCL – Configurable Custom Logic
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 1401