Port E Signals And Registers; Triple Timer Signals And Registers; Port E Signals; Triple Timer Signals - Motorola DSP56303 User Manual

5.5.4

Port E Signals and Registers

Each of the three Port E signals not used as an SCI signal can be configured as a GPIO signal.
Three registers control the GPIO functionality of Port E: Port E control register (PCRE), Port
E direction register (PRRE), and Port E data register (PDRE). Chapter 8, Serial
Communication Interface (SCI), discusses these registers.
Communications
Interface (SCI) Port
5.5.5

Triple Timer Signals and Registers

Each of the three triple timer interface signals (TIO[0–2]) not used as a timer signal can be
configured as a GPIO signal. Each signal is controlled by the appropriate timer control status
register (TCSR[0–2]). Chapter 9, Triple Timer Module, discusses these registers.
DSP56303
Serial
Figure 5-5. Port E Signals
DSP56303
Timers
Figure 5-6. Triple Timer Signals
Programming the Peripherals
General-Purpose Input/Output (GPIO)
Port E GPIO
RXD
PE0
TXD PE1
SCLK PE2
Timer GPIO
TIO0
TIO0
TIO1 TIO1
TIO2 TIO2
5-9