Preliminary Preliminary User's Manual l TQMaX4XxL UM 0001 l © 2022, TQ-Systems GmbH
Page 17
3.2.8.8
UART
The TQMaX4XxL provides up to seven UART interfaces. UART0 and UART1 are routed to the TQMaX4XxL pads as primary
functions with handshake signals.
3.2.8.9
CAN
The AM64x / AM243x provides up to two integrated CAN controller. The signals of both CAN controller are routed to the
TQMaX4XxL pads as primary function. Full CAN-FD support depends on the CPU version.
3.2.8.10
USB
The AM64x / AM243x provides a USB 3.1 port with the signals routed to the TQM AM64x / AM243x pads as primary function. But
USB3.1 and PCIe share common SerDes lanes, therefore the functionality is not always available.
In addition the AM64x / AM243x offers a non-shared USB 2.0 routed to the TQM AM64x / AM243x pads (USB0).
3.2.8.11
EXTINT#
The signal EXTINT# of the AM64x / AM243x is routed to TQMaX4XxL pad W17 as primary function.
3.2.9
Reset
The following figure describes the implementation of the reset structure of the TQMaX4XxL:
Figure 14:
Block diagram Reset
3.2.9.1
Reset Options (Input)
3.2.9.1.1
TQMaX4XxL_HARD_RST#
The input signal TQMaX4XxL_HARD_RST# is used to control the entire module. Coming from the LGA balls a reset with power
cycle of the module is executed. As soon as the signal becomes HIGH, the power-up sequencing takes place after a delay of
approx. 200 ms.
