3.5.1 PIOBU Interface

The baseboard features eight tamper pins for static or dynamic intrusion detection, UART reception, and two analog pins for comparison.

For a description of intrusion detection, refer to the SAMA5D2 datasheet, chapter "Security Module (SECUMOD)".

Figure 3-41. PIOBU Connector
Figure 3-42. PIOBU Connector J31 Location

The table below describes the pin assignment of PIOBU connector J31.

Table 3-23.  PIOBU Connector J31 Pin Assignment
Signal Pin No. Signal
PIOBU2 1 2 PIOBU3
PIOBU4 3 4 PIOBU5
PIOBU6 5 6 RXD
PIOBU7 7 8 COMPP
COMPN 9 10 GND