Datasheet

Chapter 2

FRWY-LS1046A Functional Description

This chapter describes the features and functions of the FRWY-LS1046A. For details of the LS1046A processor features, see

QorIQ LS1046A Reference Manual.

The chapter is divided into the following sections:

• Power supplies on page 12

• Clocks on page 18

• DDR interface on page 19

• SerDes interface on page 21

• USB interface on page 24

• IFC interface on page 26

• SDHC interface on page 27

• UART interface on page 28

• Serial peripheral interface on page 30

• MikroBUS socket on page 31

• I2C interface on page 33

• JTAG header on page 35

• GPIOs on page 36

• Interrupt handling on page 39

• Temperature measurement on page 39

• DIP switch on page 40

• LEDs on page 41

• System reset on page 42

2.1

Power supplies

The FRWY-LS1046A gets 12 V input power from an external DC power supply. The power supply devices on the board use the

12 V power to generate required power supplies for the LS1046A processor, DDR4 SDRAMs, PHY, and numerous other

peripherals. The figure below shows the FRWY-LS1046A power supply block diagram.

FRWY-LS1046A Functional Description

Layerscape FRWY-LS1046A Board Reference Manual, Rev. 0, 26 April 2019

NXP Semiconductors