3.2.1 Peripheral Signal Multiplexing on I/O Lines

The multiplexing table that follows defines how the I/O lines of the peripherals A, B, C and D are multiplexed on the PIO Controllers. Refer to the column PIO Peripheral, sub-column Func.

In the Primary and Alternate columns, the values in the Dir sub-column are applicable to the alternate function only if the primary signal is a PIO line (PAx, PBx, PCx, PDx). If only a primary function is available for a given pin, the value in the sub-column Dir applies.

The IO Set sub-column in the PIO Peripheral column gives IO set numbers per PIO line. For a given set of signals for a given peripheral, only IO peripheral lines which are in the same IO set can be used at the same time.

The column Reset State indicates the Reset state of the line.

• PIO, Alternate or Peripheral signal name — Indicates whether the PIO line resets in general purpose I/O mode, in Peripheral mode or in Alternate mode. If “PIO” is mentioned, the PIO line is in I/O mode. If a Peripheral or Alternate signal name is mentioned in the “Reset State” column, the PIO line is assigned to this function.
• I or O — Indicates whether the signal is Input or Output state.
• PU or PD — Indicates whether Pull-up, Pull-down or nothing is enabled.
• ST— Indicates if Schmitt trigger is enabled.
• All PIO lines feature programmable slew rate control and Lock/Freeze configuration.

For details on FLEXCOM0/1/2/3/4, see FLEXCOM Features and the section Flexible Serial Communication Controller (FLEXCOM).