9.2. Functional description

Figure 9.1 shows the PrimeCell GPIO control circuit and external interfaces for one of the four GPIO interfaces.

Figure 9.1. GPIO output control

The GPIO interrupts to the VIC are:

6

GPIO0

7

GPIO1

8

GPIO2

9

GPIO3.

Note

For GPIO3, the GPAFIN[6:0] signals are not used, but the GPAFIN[7] signal is connected to the system controller BATOK signal.

For GPIO0, GPIO1, and GPIO2, none of the GPAFIN[7:0] signals are not used

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