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1.1 Features 1

? Up to 1-GHz Sitara? ARM? Cortex?-A8 32?Bit

RISC Processor

– NEON? SIMD Coprocessor

– 32KB of L1 Instruction and 32KB of Data Cache

With Single-Error Detection (Parity)

– 256KB of L2 Cache With Error Correcting Code

(ECC)

– 176KB of On-Chip Boot ROM

– 64KB of Dedicated RAM

– Emulation and Debug - JTAG

– Interrupt Controller (up to 128 Interrupt

Requests)

? On-Chip Memory (Shared L3 RAM)

– 64KB of General-Purpose On-Chip Memory

Controller (OCMC) RAM

– Accessible to All Masters

– Supports Retention for Fast Wakeup

? External Memory Interfaces (EMIF)

– mDDR(LPDDR), DDR2, DDR3, DDR3L

Controller:

– mDDR: 200-MHz Clock (400-MHz Data Rate)

– DDR2: 266-MHz Clock (532-MHz Data Rate)

– DDR3: 400-MHz Clock (800-MHz Data Rate)

– DDR3L: 400-MHz Clock (800-MHz Data

Rate)

– 16-Bit Data Bus

– 1GB of Total Addressable Space

– Supports One x16 or Two x8 Memory Device

Configurations

– General-Purpose Memory Controller (GPMC)

– Flexible 8-Bit and 16-Bit Asynchronous

Memory Interface With up to Seven Chip

Selects (NAND, NOR, Muxed-NOR, SRAM)

– Uses BCH Code to Support 4-, 8-, or 16-Bit

ECC

– Uses Hamming Code to Support 1-Bit ECC

– Error Locator Module (ELM)

– Used in Conjunction With the GPMC to

Locate Addresses of Data Errors from

Syndrome Polynomials Generated Using a

BCH Algorithm

– Supports 4-, 8-, and 16-Bit per 512-Byte

Block Error Location Based on BCH

Algorithms

? Programmable Real-Time Unit Subsystem and

Industrial Communication Subsystem (PRU-ICSS)

– Supports Protocols such as EtherCAT?,

PROFIBUS, PROFINET, EtherNet/IP?, and

More

– Two Programmable Real-Time Units (PRUs)

– 32-Bit Load/Store RISC Processor Capable

of Running at 200 MHz

– 8KB of Instruction RAM With Single-Error

Detection (Parity)

– 8KB of Data RAM With Single-Error Detection

(Parity)

– Single-Cycle 32-Bit Multiplier With 64-Bit

Accumulator

– Enhanced GPIO Module Provides Shift-

In/Out Support and Parallel Latch on External

Signal

– 12KB of Shared RAM With Single-Error

Detection (Parity)

– Three 120-Byte Register Banks Accessible by

Each PRU

– Interrupt Controller (INTC) for Handling System

Input Events

– Local Interconnect Bus for Connecting Internal

and External Masters to the Resources Inside

the PRU-ICSS

– Peripherals Inside the PRU-ICSS:

– One UART Port With Flow Control Pins,

Supports up to 12 Mbps

– One Enhanced Capture (eCAP) Module

– Two MII Ethernet Ports that Support Industrial

Ethernet, such as EtherCAT

– One MDIO Port

Power, Reset, and Clock Management (PRCM)

Module

– Controls the Entry and Exit of Stand-By and

Deep-Sleep Modes

– Responsible for Sleep Sequencing, Power

Domain Switch-Off Sequencing, Wake-Up

Sequencing, and Power Domain Switch-On

Sequencing

– Clocks

– Integrated 15- to 35-MHz High-Frequency

Oscillator Used to Generate a Reference

Clock for Various System and Peripheral

Clocks

– Supports Individual Clock Enable and Disable

Control for Subsystems and Peripherals to

Facilitate Reduced Power Consumption

– Five ADPLLs to Generate System Clocks

(MPU Subsystem, DDR Interface, USB and

Peripherals [MMC and SD, UART, SPI, I2C],

L3, L4, Ethernet, GFX [SGX530], LCD Pixel

Clock)

– Power

– Two Nonswitchable Power Domains (Real-

Time Clock [RTC], Wake-Up Logic

[WAKEUP])

– Three Switchable Power Domains (MPU

Subsystem [MPU], SGX530 [GFX],

Peripherals and Infrastructure [PER])

– Implements SmartReflex? Class 2B for Core

Voltage Scaling Based On Die Temperature,

Process Variation, and Performance

(Adaptive Voltage Scaling [AVS])

– Dynamic Voltage Frequency Scaling (DVFS)

? Real-Time Clock (RTC)

– Real-Time Date (Day-Month-Year-Day of Week)

and Time (Hours-Minutes-Seconds) Information

– Internal 32.768-kHz Oscillator, RTC Logic and

1.1-V Internal LDO

– Independent Power-on-Reset

(RTC_PWRONRSTn) Input

– Dedicated Input Pin (EXT_WAKEUP) for

External Wake Events

– Programmable Alarm Can be Used to Generate

Internal Interrupts to the PRCM (for Wakeup) or

Cortex-A8 (for Event Notification)

– Programmable Alarm Can be Used With

External Output (PMIC_POWER_EN) to Enable

the Power Management IC to Restore Non-RTC

Power Domains

? Peripherals

– Up to Two USB 2.0 High-Speed DRD (Dual-

Role Device) Ports With Integrated PHY

– Up to Two Industrial Gigabit Ethernet MACs (10,

100, 1000 Mbps)

– Integrated Switch

– Each MAC Supports MII, RMII, RGMII, and

MDIO Interfaces

– Ethernet MACs and Switch Can Operate

Independent of Other Functions

– IEEE 1588v1 Precision Time Protocol (PTP)

– Up to Two Controller-Area Network (CAN) Ports

– Supports CAN Version 2 Parts A and B

– Up to Two Multichannel Audio Serial Ports

(McASPs)

– Transmit and Receive Clocks up to 50 MHz

– Up to Four Serial Data Pins per McASP Port

With Independent TX and RX Clocks

– Supports Time Division Multiplexing (TDM),

Inter-IC Sound (I2S), and Similar Formats

– Supports Digital Audio Interface Transmission

(SPDIF, IEC60958-1, and AES-3 Formats)

– FIFO Buffers for Transmit and Receive (256

Bytes)

– Up to Six UARTs

– All UARTs Support IrDA and CIR Modes

– All UARTs Support RTS and CTS Flow

Control

– UART1 Supports Full Modem Control

– Up to Two Master and Slave McSPI Serial

Interfaces

– Up to Two Chip Selects

– Up to 48 MHz

– Up to Three MMC, SD, SDIO Ports

– 1-, 4- and 8-Bit MMC, SD, SDIO Modes

– MMCSD0 has Dedicated Power Rail for 1.8?V

or 3.3-V Operation

– Up to 48-MHz Data Transfer Rate

– Supports Card Detect and Write Protect

– Complies With MMC4.3, SD, SDIO 2.0

Specifications

– Up to Three I2C Master and Slave Interfaces

– Standard Mode (up to 100 kHz)

– Fast Mode (up to 400 kHz)

– Up to Four Banks of General-Purpose I/O

(GPIO) Pins

– 32 GPIO Pins per Bank (Multiplexed With

Other Functional Pins)

– GPIO Pins Can be Used as Interrupt Inputs

(up to Two Interrupt Inputs per Bank)

– Up to Three External DMA Event Inputs that can

Also be Used as Interrupt Inputs

– Eight 32-Bit General-Purpose Timers

– DMTIMER1 is a 1-ms Timer Used for

Operating System (OS) Ticks

– DMTIMER4–DMTIMER7 are Pinned Out

– One Watchdog Timer

– SGX530 3D Graphics Engine

– Tile-Based Architecture Delivering up to 20

Million Polygons per Second

– Universal Scalable Shader Engine (USSE) is

a Multithreaded Engine Incorporating Pixel

and Vertex Shader Functionality

– Advanced Shader Feature Set in Excess of

Microsoft VS3.0, PS3.0, and OGL2.0

– Industry Standard API Support of Direct3D

Mobile, OGL-ES 1.1 and 2.0, and OpenMax

– Fine-Grained Task Switching, Load

Balancing, and Power Management

– Advanced Geometry DMA-Driven Operation

for Minimum CPU Interaction

– Programmable High-Quality Image Anti-

Aliasing

– Fully Virtualized Memory Addressing for OS

Operation in a Unified Memory Architecture

– LCD Controller

– Up to 24-Bit Data Output; 8 Bits per Pixel

(RGB)

– Resolution up to 2048 × 2048 (With

Maximum 126-MHz Pixel Clock)

– Integrated LCD Interface Display Driver

(LIDD) Controller

– Integrated Raster Controller

– Integrated DMA Engine to Pull Data from the

External Frame Buffer Without Burdening the

Processor via Interrupts or a Firmware Timer

– 512-Word Deep Internal FIFO

– Supported Display Types:

– Character Displays - Uses LIDD Controller

to Program these Displays

– Passive Matrix LCD Displays - Uses LCD

Raster Display Controller to Provide

Timing and Data for Constant Graphics

Refresh to a Passive Display

– Active Matrix LCD Displays - Uses

External Frame Buffer Space and the

Internal DMA Engine to Drive Streaming

Data to the Panel

– 12-Bit Successive Approximation Register

(SAR) ADC

– 200K Samples per Second

– Input can be Selected from any of the Eight

Analog Inputs Multiplexed Through an 8:1

Analog Switch

– Can be Configured to Operate as a 4-Wire, 5-

Wire, or 8-Wire Resistive Touch Screen

Controller (TSC) Interface

– Up to Three 32-Bit eCAP Modules

– Configurable as Three Capture Inputs or

Three Auxiliary PWM Outputs

– Up to Three Enhanced High-Resolution PWM

Modules (eHRPWMs)

– Dedicated 16-Bit Time-Base Counter With

Time and Frequency Controls

– Configurable as Six Single-Ended, Six Dual-

Edge Symmetric, or Three Dual-Edge

Asymmetric Outputs

– Up to Three 32-Bit Enhanced Quadrature

Encoder Pulse (eQEP) Modules

? Device Identification

– Contains Electrical Fuse Farm (FuseFarm) of

Which Some Bits are Factory Programmable

– Production ID

– Device Part Number (Unique JTAG ID)

– Device Revision (Readable by Host ARM)

? Debug Interface Support

– JTAG and cJTAG for ARM (Cortex-A8 and

PRCM), PRU-ICSS Debug

– Supports Device Boundary Scan

– Supports IEEE 1500

? DMA

– On-Chip Enhanced DMA Controller (EDMA) has

Three Third-Party Transfer Controllers (TPTCs)

and One Third-Party Channel Controller

(TPCC), Which Supports up to 64

Programmable Logical Channels and Eight

QDMA Channels. EDMA is Used for:

– Transfers to and from On-Chip Memories

– Transfers to and from External Storage

(EMIF, GPMC, Slave Peripherals)

? Inter-Processor Communication (IPC)

– Integrates Hardware-Based Mailbox for IPC and

Spinlock for Process Synchronization Between

Cortex-A8, PRCM, and PRU-ICSS

– Mailbox Registers that Generate Interrupts

– Four Initiators (Cortex-A8, PRCM, PRU0,

PRU1)

– Spinlock has 128 Software-Assigned Lock

Registers

? Security

– Crypto Hardware Accelerators (AES, SHA,

RNG)

– Secure Boot (optional; requires custom part

engagement with TI)

? Boot Modes

– Boot Mode is Selected Through Boot

Configuration Pins Latched on the Rising Edge

of the PWRONRSTn Reset Input Pin

? Packages:

– 298-Pin S-PBGA-N298 Via Channel Package

(ZCE Suffix), 0.65-mm Ball Pitch

– 324-Pin S-PBGA-N324 Package

(ZCZ Suffix), 0.80-mm Ball Pitch

1.2 Applications

? Gaming Peripherals

? Home and Industrial Automation

? Consumer Medical Appliances

? Printers

? Smart Toll Systems

? Connected Vending Machines

? Weighing Scales

? Educational Consoles

? Advanced Toys

1.3 Description

The AM335x microprocessors, based on the ARM Cortex-A8 processor, are enhanced with image,

graphics processing, peripherals and industrial interface options such as EtherCAT and PROFIBUS. The

devices support high-level operating systems (HLOS). Processor SDK Linux? and TI-RTOS are available

free of charge from TI.

The AM335x microprocessor contains the subsystems shown in the Functional Block Diagram and a brief

description of each follows:

The contains the subsystems shown in the Functional Block Diagram and a brief description of each

follows:

The microprocessor unit (MPU) subsystem is based on the ARM Cortex-A8 processor and the PowerVR

SGX? Graphics Accelerator subsystem provides 3D graphics acceleration to support display and gaming

effects.

The PRU-ICSS is separate from the ARM core, allowing independent operation and clocking for greater

efficiency and flexibility. The PRU-ICSS enables additional peripheral interfaces and real-time protocols

such as EtherCAT, PROFINET, EtherNet/IP, PROFIBUS, Ethernet Powerlink, Sercos, and others.

Additionally, the programmable nature of the PRU-ICSS, along with its access to pins, events and all

system-on-chip (SoC) resources, provides flexibility in implementing fast, real-time responses, specialized

data handling operations, custom peripheral interfaces, and in offloading tasks from the other processor

cores of SoC.