Can I use four phase counting modes of the TPU simultaneously?

Yes. You can use four phase counting modes simultaneously using four channels of TPU. However, you cannot use four phase counting modes simultaneously when the external bus is enabled (EXPE = 1) in external extension mode or single chip mode. When using four phase counting modes simultaneously, use eight external clock input pins (TCLKA to TCLKH).

TCLKA input external clock A input pin (Channel 1 or 5 phase counting mode A phase input)
TCLKB input external clock B input pin (Channel 1 or 5 phase counting mode B phase input)
TCLKC input external clock C input pin (Channel 2 or 4 phase counting mode A phase input)
TCLKD input external clock D input pin (Channel 2 or 4 phase counting mode B phase input)
TCLKE input external clock E input pin (Channel 7 or 11 phase counting mode A phase input) *
TCLKF input external clock F input pin (Channel 7 or 11 phase counting mode B phase input) *
TCLKG input external clock G input pin (Channel 8 or 10 phase counting mode A phase input) *
TCLKH input external clock H input pin (Channel 8 or 10 phase counting mode B phase input) *

*Port J (TCLKE to TCKJKH) can be used when the external bus is disabled (EXPE = 0) in single chip mode and the PCJKE bit is set to 1. When the external bus is enabled (EXPE = 1) in external extension mode and single chip mode, port J  (TCLKE to TCKJKH) cannot be used because it will be an address bus.