User's Manual l MBa8MPxL UM 0100 l © 2022, TQ-Systems GmbH
Page 8
3.
ELECTRONICS
3.1
MBa8MPxL functional groups
The following chapters describe the interfaces of the MBa8MPxL in connection with a TQMa8MPxL.
3.1.1
TQMa8MPxL overview
The MBa8MPxL provides all power supplies and configurations required for the operation of the TQMa8MPxL.
The TQMa8MPxL is the central system on the MBa8MPxL. It provides LPDDR4 SDRAM, eMMC, NOR flash, RTC, an EEPROM, power
supply and power management functionality. All TQMa8MPxL internal voltages are derived from the 5 V supply voltage.
All functionally relevant pins of the i.MX 8M Plus are routed to the TQMa8MPxL connectors or LGA pads. This enables to use the
TQMa8MPxL with all the freedom that comes with a customer-specific design-in solution. Further information can be found in
the TQMa8MPxL User’s Manual.
On the MBa8MPxL the standard interfaces like USB, Ethernet, etc., provided by the TQMa8MPxL are routed to industry standard
connectors. All other relevant signals and buses provided by the TQMa8MPxL are routed to 50 mil pin headers on the MBa8MPxL.
The boot behaviour of the TQMa8MPxL can be controlled. The boot mode configuration is set with a DIP switch on the
MBa8MPxL.
i.MX 8M Plus
366 LGA Pads
eMMC 5.1 (optional)
EEPROM (optional)
Temperature sensor / EEPROM
PMIC
NXP PCA9450C
QSPI NOR Flash (optional)
RTC (optional)
LPDDR4 SDRAM
5 V
TSE (optional)
Supervisor
5 V
Figure 4:
Block diagram TQMa8MPxL
3.1.2
TQMa8MPxL pinout
All relevant TQMa8MPxL signals are routed to 50 mil pin headers on the MBa8MPxL.
Note: Available interfaces
Depending on the TQMa8MPxL derivative, not all interfaces are available.
More information about available interfaces can be found in the TQMa8MPxL User’s Manual
and pinout tables.
