User's Manual l MBa8x UM 0100 l © 2021, TQ-Systems GmbH
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3.
ELECTRONICS
3.1
MBa8x functional groups
The following chapters describe the interfaces on the MBa8x as of revision 02xx in connection with a TQMa8x with maximum
configuration.
3.2
TQMa8x
The TQMa8x is the central system on the MBa8x. It provides LPDDR4 SDRAM, eMMC, NOR flash, RTC, an EEPROM, power supply
and power management functionality.
All TQMa8x internal voltages are derived from the 5 V supply voltage. All functionally relevant pins of the CPU are routed to the
TQMa8x connectors. This enables the user to use the TQMa8x with all the freedom that comes with a customer-specific design-in
solution. Further information can be found in the TQMa8x User’s Manual.
On the MBa8x the standard interfaces like USB, Ethernet, etc., provided by the TQMa8x are routed to industry standard
connectors. All other signals and buses provided by the TQMa8x are routed to 100 mil headers.
The boot behaviour of the TQMa8x can be configured. The Boot-Mode configuration is set by a DIP switch on the MBa8x, see
chapter 3.1.1.3.
Furthermore the MBa8x provides all power supplies and configurations required for the operation of the TQMa8x.
Figure 2:
Block diagram TQMa8x
