3.9 AHB GPIO
The Soft Macro Model (SMM) uses six instances of the CMSDK GPIO.
GPIO0 through GPIO3 map to the expansion ports.
GPIO4 and GPIO5 have no external connections.
Where the GPIO expansion is shared with other peripherals, the pin muxing is controlled using the GPIO
alternate function registers. Setting the alternate function bit to '1' disables the GPIO connection for the
pin and enable the other peripheral connection.
For more information on the CMSDK GPIO registers, see the ARM
®
Cortex
®
-M System Design Kit
Technical Reference Manual.
3 FPGA platform overview
3.9 AHB GPIO
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