AM3871 datasheet(3/345 Pages) TI1

3 / 345 page

AM3874, AM3872, AM3871

www.ti.com

SPRS695

– SEPTEMBER 2011

1.3

Description

AM387x Sitara

™ ARM® MPUs are a highly-integrated, programmable platform that leverages TI’s

Sitara

™ Microprocessor technology to meet the processing needs of the following applications:

Single-Board Computing, Network and Communications Processing, Industrial Automation, Human

Machine Interface, and Interactive Point-of-Service/Information Kiosks, and Portable Data Terminals.

The device enables Original-Equipment Manufacturers (OEMs) and Original-Design Manufacturers

(ODMs) to quickly bring to market devices featuring robust operating systems support, rich user interfaces,

and high processing performance through the maximum flexibility of a fully integrated mixed processor

solution. The device also combines programmable ARMprocessing with a highly integrated peripheral set.

The AM387x Sitara

™ ARM® MPUs also present OEMs and ODMs with new levels of processor scalability

and software reuse. An OEM or ODM that used the AM387x MPU in a design and sees an opportunity to

make a similar product with added features could scale up to the pin-compatible and software-compatible

TMS320DM814x processors from Texas Instruments (TI). The TMS320DM814x DaVinci

™ Digital Media

processors add a powerful C674x

™ core DSP along with a video encoder/decoder to the hardware on the

AM38x. Additionally, OEMs or ODMs that have used the AM387x or DM814x processors and find a need

for a faster ARM and/or DSP core performance could scale up to the software-compatible AM389x,

TMS320C6A816x, or TMS320DM816x devices with higher core speeds.

Programmability is provided by an ARM Cortex

™-A8 RISC CPU with Neon™ extension. The ARM allows

developers to keep control functions separate from algorithms programmed on coprocessors, thus

reducing the complexity of the system software. The ARM Cortex

™-A8 32-bit RISC microprocessor with

Neon

™ floating-point extension includes: 32 Kbytes (KB) of Instruction cache; 32KB of Data cache;

512KB of L2 Cache; 48KB of Boot ROM; and 64KB of RAM.

The rich peripheral set provides the ability to control external peripheral devices and communicate with

external processors. For details on each of the peripherals, see the related sections in this document and

the associated peripheral reference guides. The peripheral set includes: HD Video Processing Subsystem;

Dual Port Gigabit Ethernet MACs (10/100/1000 Mbps) [Ethernet Switch] with MII/RMII/GMII/RGMII and

MDIO interface supporting IEEE-1588 Time-Stamping and Industrial Ethernet Protocols; two USB ports

with integrated 2.0 PHY; PCIe x1 GEN2 Compliant interface; two 10-serializer McASP audio serial ports

(with DIT mode); four quad-serilaizer McASP audio serial ports (with DIT mode); one McBSP multichannel

buffered serial port; six UARTs with IrDA and CIR support; four SPI serial interfaces; three MMC/SD/SDIO

serial interfaces; four I2C master/slave interfaces; a Parallel Camera Interface (CAM); up to

128 General-Purpose IOs (GPIOs); eight 32-bit general-purpose timers; System watchdog timer; Dual

LPDDR/DDR2/DDR3 SDRAM interfaces; flexible 8/16-bit asynchronous memory interface; two Controller

Area Network (DCAN) modules; a Spin Lock; Mailbox; and Serial Hard Disk Drive Interface (SATA 300).

The AM387x Sitara

™ ARM® MPUs also include a SGX530 3D graphics engine to off-load many graphics

processing tasks from the ARM core, making more ARM MIPS available for common processing tasks on

algorithms. Additionally, it has a complete set of development tools for the ARM which include C compilers

and a Microsoft

® Windows™ debugger interface for visibility into source code execution.

High-Performance System-on-Chip (SoC)

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