SPRACJ6A
October 2018 – December 2022
AM6526
,
AM6528
,
AM6546
,
AM6548
Trademarks
1
Introduction
1.1
Before Getting Started
1.2
Device (Processor) Selection
1.3
Technical Documentation
1.4
Design Documentation
2
System Block Diagram
2.1
Creating the System Block Diagram
2.2
Selecting the Boot Mode
2.3
Confirming Pin Multiplexing Compatibility
3
Power Supply
3.1
Power (Supply) Rails
3.1.1
Internal LDOs for IO groups
3.1.2
Dual-Voltage LVCMOS I/Os
3.1.3
Dual-Voltage Switching SDIO I/Os
3.2
Determining System Power Requirements
3.3
Power Supply Filters
3.4
Power Supply Decoupling and Bulk Capacitors
3.5
Power Supply Sequencing
4
Clocking
4.1
System Clock Inputs
4.2
Single-Ended Clock Sources
4.3
Unused Clock Inputs
5
JTAG
5.1
JTAG / Emulation
5.1.1
Configuration of JTAG / Emulation
5.1.2
System Implementation of JTAG / Emulation
5.1.3
JTAG Termination
6
Device Configurations and Initialization
6.1
Device Reset
6.2
Boot Modes
6.3
Watchdog Timer
7
Peripherals
7.1
Selecting Peripherals Across Functional Domains
7.2
Ethernet Interface
7.3
Programmable Real-Time Unit and Industrial Communication Subsystem - Gigabit (PRU-ICSSG)
7.4
Universal Serial Bus (USB) Subsystem
8
I/O Buffers and Termination
9
Power Consumption and Thermal Solutions
9.1
Power Consumption
9.2
Power Savings Modes
9.3
Guidance on Thermal Solution
10
Schematic Recommendations
10.1
Selection of Component and Values
10.2
Schematics Development
10.3
Reviewing the Schematics
10.4
Floor planning of the PCB
11
Layout and Routing Guidelines
11.1
Escape Routing Guidelines
11.2
DDR Board Design and Layout Guidelines
11.3
High-Speed Differential Signal Routing Guidance
12
Terminology
13
References
14
Revision History
13
References
Texas Instruments:
AM654x, AM652x Sitara™ Processors Data Sheet
Texas Instruments:
AM65x/DRA80xM Processors Technical Reference Manual
Texas Instruments:
AM65x Silicon Errata
Texas Instruments:
TMDX654GPEVM (AM65x evaluation module (EVM))
Texas Instruments:
TMDX654IDKEVM (AM65x industrial development kit (IDK))
Texas Instruments:
TMDX654HSEVM (AM65x high security (HS) evaluation module (EVM))
Texas Instruments:
Thermal Design Guide for DSP and Arm Application Processors Application Report
Texas Instruments:
PRU-ICSS Feature Comparison
Texas Instruments:
Hardware Design Guide for KeyStone II Devices
Texas Instruments:
Sitara Processor Power Distribution Networks: Implementation and Analysis
Texas Instruments:
Emulation and Trace Headers Technical Reference Manual
Texas Instruments:
AM65x/DRA80x Schematic Checklist
Texas Instruments:
AM654x/DRA80xM BGA Escape Routing
Texas Instruments:
AM65x/DRA80xM DDR Board Design and Layout Guidelines
Texas Instruments:
High-Speed Interface Layout Guidelines