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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
AM3359, AM3358, AM3357, AM3356, AM3354, AM3352, AM3351
SPRS717J –OCTOBER 2011–REVISED APRIL 2016
AM335x Sitara™ Processors
1 Device Overview
1
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
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