User's Manual, or due to usage of erroneous or incomplete information, are exempted, as long as there is no proven intentional or negligent fault of TQ-Systems GmbH. TQ-Systems GmbH explicitly reserves the rights to change or add to the contents of this User's Manual or parts of it without special notification.
Page 4 BRIEF DESCRIPTION This User's Manual describes the hardware of the TQMa6x revision 04xx, and refers to some software settings. A certain derivative of the TQMa6x does not necessarily provide all features described in this User's Manual. Functional differences between Dual/Quad and DualPlus/QuadPlus are referred to in the relevant passages.
The eFUSEs in the i.MX6 are available for the user, except for the MAC address eFUSEs. TQMa6x modules are delivered pre-programmed with MAC addresses from the TQ-Systems MAC address pool. The MAC addresses are burned in the designated OCOTP eFUSEs (bank 4, word 2, 3).
After power-up, the boot code initializes the hardware and then loads the program image from the selected boot device. The eMMC or the SPI NOR flash integrated on the TQMa6x can for example be selected as the standard boot device.
3.2.2.1 DDR3L SDRAM Depending on the i.MX6 derivative either two or four DDR3L SDRAM chips are assembled on the TQMa6x. All chips have one common chip select. The chips are connected to the i.MX6 with a 64-bit bus. (Exception: The i.MX6 “Solo” is connected with a 32-bit bus.) The following block diagram shows how the DDR3L SDRAM is connected to the i.MX6.
The write protection pin of the SPI NOR flash is available at connector X3-40. The reset pin is not connected by default. A reset can only be carried out via a complete power cycle of the TQMa6x. The SPI NOR flash can be reset by one or more of the following sources (assembly option).
A serial EEPROM is available for permanent storage of e.g. TQMa6x characteristics or customers parameters. Depending on the TQMa6x version, the I2C1 or the I2C3 bus of the i.MX6 controls the EEPROM, see also 3.2.5.9. Write-Protection (WP) is not supported.
A temperature sensor LM75ADP is assembled on the TQMa6x to monitor the temperature of the TQMa6x. The LM75ADP is placed on the bottom side of the TQMa6x, (D2 in Illustration 22). Depending on the TQMa6x version, the temperature sensor is connected to the I2C1 or the I2C3 bus of the i.MX6, see also 3.2.5.9.
3.2.5.1 Overview The TQMa6x provides interfaces with primary functions. They can all be used simultaneously independent of their configuration. Some of the primary functions cannot be used if a secondary function (e.g. the EIM bus) is used. In the following chapters, only the external primary interfaces are described.
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Attention: Special function of TQMa6x pin X1–150 The pad GPIO_16 / ball R2 / signal GPIO7_IO11 of the i.MX6 (TQMa6x pin X1–150) has a special function with different Ethernet functions. More information is to be taken from the NXP Hardware Development Guide for i.MX 6Quad, 6Dual, 6DualLite, 6Solo Families of Applications Processors (9).
TQMa6x Remark I2C1_SCL X1–107 4.7 kΩ PU to 3.3 V on TQMa6x, no PU on Variant “B”, see Illustration 10 I2C1_SDA X1–109 4.7 kΩ PU to 3.3 V on TQMa6x, no PU on Variant “B”, see Illustration 10 I2C3_SCL X1–86...
Page 29 3.2.5.23 The TQMa6x provides one USB Host controller and one USB OTG controller. USB HOST1 and USB OTG provide an integrated High-Speed PHY. USB HOST1 and USB OTG are available at the connectors as primary function. The following table shows the signals used by the USB_H1 interface.
Overview TQMa6x power supply The input voltage for the TQMa6x is 5 V ±5 % (4.75 V to 5.25 V). In addition to the required PMIC, another voltage converter is assembled on the TQMa6x to provide the 4.2 V for the PMIC. VCC1...
Voltage monitoring VCC5V A supervisor on the TQMa6x monitors the input voltage of the TQMa6x (VCC5V). If the input voltage is too low, the input regulator DCDC4V2 is not enabled or disabled. The supervisor triggers typically at 4.55 V ±100 mV and has a delay of 200 ms.
The given current consumption has to be seen as an approximate value. The power consumption of the TQMa6x strongly depends on the application, the mode of operation and the operating system. The following table shows details of the TQMa6x supply and power consumption.
Power-Up sequence TQMa6x / carrier board The TQMa6x operates with 5 V; the 3.3 V I/O voltages of the i.MX6 signals are generated on the TQMa6x. This leads to requirements for the carrier board design concerning the chronological characteristics of the voltages generated on the carrier board.
The TQMa6x is held in the mating connectors with a considerable retention force. It is strongly recommended to use an extraction tool to remove the TQMa6x from the carrier board to avoid damaging the connectors of the TQMa6x or the connectors on the carrier board. See chapter 4.8 for further information.
Structural requirements The TQMa6x is held in the mating connectors by the retention force of the pins (320 or 360). For high requirements with respect to vibration and shock firmness, an additional plastic retainer has to be provided in the final product to hold the TQMa6x in its position.
Filtering of all signals, which can be connected externally (also "slow signals" and DC can radiate RF indirectly) Since the TQMa6x is used on an application-specific carrier board, EMC or ESD tests only make sense for the whole device. In order to avoid interspersion on the signal path from the input to the protection circuit in the system, the protection against electrostatic discharge should be arranged directly at the inputs of a system.
15 ms Reliability and service life The theoretical MTBF at a constant error rate for the TQMa6x is approximately 1,153,000 h @ +40 °C environment temperature. The TQMa6x is designed to be insensitive to shock and vibration. High quality industrial grade connectors are assembled on the TQMa6x.
By environmentally friendly processes, production equipment and products, we contribute to the protection of our environment. To be able to reuse the TQMa6x, it is produced in such a way (a modular construction) that it can be easily repaired and disassembled. The energy consumption of this subassembly is minimised by suitable measures. The TQMa6x is delivered in reusable packaging.
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