DSP56303 FREESCALE [Freescale Semiconductor, Inc], DSP56303 Datasheet - Page 99

• Manufacturer Part Number: DSP56303
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

5.5.2 Port C Signals and Registers
Each of the six Port C signals not used as an ESSI0 signal can be configured as a GPIO signal.
Three registers control the GPIO functionality of Port C: Port C control register (PCRC), Port C
direction register (PRRC), and Port C data register (PDRC). Chapter 7, Enhanced Synchronous
Serial Interface (ESSI), discusses these registers.
5.5.3 Port D Signals and Registers
Each of the six Port D signals not used as an ESSI1 signal can be configured as a GPIO signal.
Three registers control the GPIO functionality of Port D: Port D control register (PCRD), Port D
direction register (PRRD), and Port D data register (PDRD). Chapter 7, Enhanced Synchronous
Serial Interface (ESSI), discusses these registers.
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
Freescale Semiconductor
Enhanced Synchronous
Enhanced Synchronous
Serial Interface Port 1
Serial Interface Port 0
DSP56303
DSP56303
(ESSI1)
(ESSI0)
Figure 5-3. Port C Signals
Figure 5-4. Port D Signals
DSP56303 User’s Manual, Rev. 2
SC1[0–2]
SCK1
SRD1
STD1
SC0[0–2]
SCK0
SRD0
STD0
General-Purpose Input/Output (GPIO)
Port D GPIO
PD[0–2]
PD3
PD4
PD5
Port C GPIO
PC[0–2]
PC3
PC4
PC5
5-7