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System Description
An IMPORTANT NOTICE at the end of this TI reference design addresses authorized use, intellectual property matters and other
important disclaimers and information.
1
System Description
TIDA-050043 is first-and-foremost a reference design for powering the NXP i.MX 6ULL processor from the
TPS6521815 PMIC. To show that the PMIC can power the processor, it made the most sense to build a
data concentrator design that can also be used as a full evaluation kit (EVK) board with a variety of
peripheral devices to assist with development of various end equipments. As a result, there are a variety
of wired connections available, as well as multiple BOOT options. The end result of adding all the
peripherals, especially a 5-port USB hub, is that some external load switches have been added to provide
more voltage rails to deliver 5-V USB from the input to the USB hub. Finally, to ensure the entire board is
operational, we developed and tested software using the open-source embedded Linux Yocto SDK to get
started working with this design.
1.1
Key System Specifications
PARAMETER
Processor
PMIC
Memory
Ethernet
Debug method (USB-to-UART)
USB ports
LCD display
JTAG header
USB2ANY header
Current monitoring
Operation with Coin Cell
Tactile inputs, visual feedback
2
Integrated Power Supply Reference Design for NXP i.MX 6ULL
Table 1. Key System Specifications
SPECIFICATIONS
i.MX 6ULL, ARM Cortex-A7 Applications Processor,
MCIMX6Y2CVM08AB
TPS6521815 user-programmable PMIC with automatic sequencing and
DVFS
4-Gb DDR3L (512 MB), 256-Mb QSPI NOR-Flash (32 MB), 8GB
eMMC 5.0, SD v3.0 interface
Dual-port ethernet interface - TI DP83849I PHY and 0845-2R1T-E4
RJ45 jack from Bel Fuse
FTDI FT230X is required to implement USB to serial UART conversion
5x USB Type-A ports (USB2517I-JZX hub IC) and 1x micro-AB port for
USB OTG (Amphenol 10104111-0001LF)
RGB TFT 40-pin connector (Molex 54132-4062) for LCD display
(Newhaven Display NHD-2.4-240320CF-CTXI#-F), compatible with
touch-screen controller (TI TSC2046IPWR)
JTAG connection to i.MX 6ULL processor with 50-mil pitch, 10-pin
header
Debug method for PMIC separate from processor I
USB2ANY (standard 100-mil pitch, 10-pin header)
2x TI INA3221 devices are used to monitor current through 6 rails in
the system
Coin cell for i.MX 6ULL SNVS input. Using DCDC6 of TPS6521815
PMIC, system always powers SNVS before full power-up sequence
begins.
Push-buttons and status LEDs connected to GPIOs of the processor to
assist with debugging software
Copyright © 2020, Texas Instruments Incorporated
DETAILS
Section 2.2.1
Section 2.3.1
Section 2.2.2
Section 2.3.2
Section 2.2.3
Section 2.2.4
Section 2.2.5
Section 2.2.6
2
C bus. Provided by
Section 2.2.7
Section 2.3.3
Section 2.3.4
Section 2.2.8
TIDUEW7 – May 2020
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