Analog Devices ADSP-SC58 Series Hardware Reference Manual page 18

General-Purpose Ports (PORT)
PORT Features ............................................................................................................................................ 14–2
PORT Functional Description..................................................................................................................... 14–2
ADSP-SC58x PORT Register List............................................................................................................ 14–3
ADSP-SC58x PINT Register List............................................................................................................. 14–3
ADSP-SC58x PINT Interrupt List .......................................................................................................... 14–4
ADSP-SC58x PINT Trigger List .............................................................................................................. 14–4
ADSP-SC58x PADS Register List............................................................................................................. 14–5
PORT Architectural Concepts.................................................................................................................. 14–5
Internal Interfaces ................................................................................................................................ 14–5
External Interfaces................................................................................................................................. 14–5
GPIO Functionality .............................................................................................................................. 14–5
Input Mode........................................................................................................................................ 14–5
Output Mode .................................................................................................................................... 14–6
Open-Drain Mode ............................................................................................................................ 14–6
Port Multiplexing Control..................................................................................................................... 14–6
PORT Event Control................................................................................................................................... 14–7
PORT Interrupt Signals ........................................................................................................................... 14–7
PORT Programming Model ........................................................................................................................ 14–9
ADSP-SC58x PORT Register Descriptions .............................................................................................. 14–12
Port x GPIO Data Register .................................................................................................................... 14–14
Port x GPIO Data Clear Register .......................................................................................................... 14–18
Port x GPIO Data Set Register .............................................................................................................. 14–22
Port x GPIO Output Toggle Register .................................................................................................... 14–25
Port x GPIO Direction Register ............................................................................................................ 14–28
Port x GPIO Direction Clear Register ................................................................................................... 14–32
Port x GPIO Direction Set Register ....................................................................................................... 14–36
Port x Function Enable Register ............................................................................................................ 14–39
Port x Function Enable Clear Register ................................................................................................... 14–42
Port x Function Enable Set Register ....................................................................................................... 14–45
xviii ADSP-SC58x/ADSP-2158x SHARC+ Processor Hardware Reference