Freescale Semiconductor DSP56366 5.2.4 Port E Signals and Registers, 5.2.5 Timer/Event Counter Signals

Programming Model
DSP56366 24-Bit Digital Signal Processor User Manual, Rev. 4
5-2 Freescale Semiconductor
5.2.4 Port E Signals and Registers
Port E has 10 signals, shared with the ESAI_1. Six of the ESAI_1 signals have their own pin, so each of
the six signals, if not used as an ESAI_1 signal, can be configured individually as a GPIO signal. The other
four ESAI_1 signals share pins with the ESAI. For these shared pins, if the pin is not being used by the
ESAI, Port C and the ESAI_1, then it may be used as a Port E GPIO signal. The GPIO functionality of port
E is controlled by three registers: port E control register (PCRE), port E direction register (PRRE), and
port E data register (PDRE). These registers are described in Section 9, "Enhanced Serial Audio Interface
1 (ESAI_1)".
5.2.5 Timer/Event Counter Signals
The timer/event counter signal (TIO), when not used as a timer signal can be configured as a GPIO signal.
The signal is controlled by the appropriate timer control status register (TCSR). The register is described
in Section 11, "Timer/ Event Counter".