Freescale Semiconductor MPC5748G EVB, User Manual

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MPC5748G EVB User Guide, User Guide, Rev. 0, 08/2015
26 Freescale Semiconductor, Inc.
8. User Interface (I/O)
This section details the user I/O available on the EVB and includes the GPIO matrix, switches, LED’s
and the ADC variable resistor.
8.1. GPIO Matrix
All of the available GPIO pins (those not already used for existing EVB peripherals) are available at the
GPIO matrix shown below. The matrix provides an easy to follow, intuitive, space saving grid of 0.1”
header through-hole pads. Users can solder wires, fit headers or simply insert a scope probe into the
respective pad.
To use the matrix, simply read the port letter from the top or bottom row of text then the pad number
from the columns on the left or right of the matrix. For example, the 1
st
pad available on Port B is PB5
as highlighted in green below.
Figure 12. GPIO Matrix
If a pad is populated in the matrix, it means this is available for exclusive use as GPIO. The exception to
this are the port pins detailed below which are also shared with switches or user LED’s (shaded red in
the matrix diagram above).
PG2, PG3, PG4, PG5 – User LED’s 1..4
PD0, PD1, PD2, PD3 – HEX Encoder Switch
PA1,PA2, PF9, PF11 – User pushbutton Switches
In addition there are GPIO pins that are shared with the SAI Audio and TWRPI connectors as detailed
below and shaded orange. These are totally available unless the SAI / TWRPI headers are being used.
PA[12..15], PD[4..8], PG[2..5], PK[0..4], PO[0..1]
The GPIO matrix is
on the bottom edge
of the EVB above
the SAI audio
connector