PINT Pin description

The inputs to the pin interrupt and pattern match engine are determined by the pin interrupt select registers in the SYSCON block. See PINT Configure pins as pin interrupts or as inputs to the pattern match engine.

The pattern match engine output is assigned to an external pin through the switch matrix.

See SWM Connect an internal signal to a package pin for the steps that you need to follow to assign the GPIO pattern match function to a pin on the LPC81x package.

Table 1. PINT Pin interrupt/pattern match engine pin description
Function Direction Pin Description SWM register Reference
GPIO_INT_BMAT O any GPIO pattern match output PINASSIGN8 SWM registerName = PINASSIGN8 addressOffset = 0x020