基于DM37x設計的高性能應用處理器開發方案

本文介紹了DM37x系列主要特性，功能方框圖和AM/DM37x評估模塊（EVM）功能方框圖，EVM 主板電路圖，處理器模塊電路圖以及電源模塊電路圖。

TI 公司的DM37x系列是高性能應用處理器，基于增強的器件架構和采用TI的45nm工藝技術，與CortexTM-A8 Sitara 和OMAP處理器兼容，MPU子系統，高達1-GHz ARM CortexTM-A8內核，NEON SIMD協處理器，高性能圖像，視頻，音頻(IVA2.2?)加速子系統，高達800-MHz TMS320C64x+? DSP核，具有EDMA控制器（128個獨立通路）以及視頻硬件加速器，主要用在手提數據終端，導航，汽車娛樂，游戲，醫療圖像，家庭自動化，工業控制，測試測量和單板機。

This DM3730/25 Applications Processor data manual presents the electrical and mechanical specifications for the DM3730/25 Applications Processor. The information contained in this data manual applies to both the commercial and extended temperature versions of the DM3730/25 Applications Processor unless otherwise indicated. It consists of the following sections:

? A description of the DM3730/25 terminals: assignment, electrical characteristics, multiplexing, and functional description

? A presentation of the electrical characteristics requirements: power domains, operating conditions, power consumption, and dc characteristics

? The clock specifications: input and output clocks, DPLL and DLL

? A description of thermal characteristics, device nomenclature, and mechanical data about the available packaging

The device can support numerous HLOS and RTOS solutions including Linux and Windows Embedded CE which are available directly from TI.

DM37x主要特性：

DM3730/25 Applications Processor:

Compatible with OMAP? 3 Architecture

MPU Subsystem

Up to 1-GHz ARM CortexTM-A8 Core

NEON SIMD Coprocessor

High Performance Image, Video, Audio (IVA2.2?) Accelerator Subsystem

Up to 800-MHz TMS320C64x+? DSP Core

Enhanced Direct Memory Access (EDMA) Controller (128 Independent Channels) Video Hardware Accelerators

POWER SGX? Graphics Accelerator (DM3730 only)

Tile Based Acrchitecture Delivering up to 20 MPoly/sec

Universal Scalable Shader Engine: Multi-threaded Engine Incorporating Pixel and Vertex Shader Functionality

Industry Standard API Support: OpenGLES 1.1 and 2.0, OpenVG1.0

Fine Grained Task Switching, Load Balancing, and Power Management

Programmable High Quality Image Anti-Aliasing

Advanced Very-Long-Instruction-Word (VLIW) TMS320C64x+? DSP Core

Eight Highly Independent Functional Units

Six ALUs (32-/40-Bit); Each Supports Single 32- bit, Dual 16-bit, or Quad 8-bit, Arithmetic per Clock Cycle

Two Multipliers Support Four 16 × 16-Bit Multiplies (32-Bit Results) per Clock Cycle or Eight 8 × 8-bit Multiplies (16-Bit Results) per Clock Cycle

Load-Store Architecture With Non-Aligned Support

圖1。DM3730/25 功能方框圖

AM/DM37x評估模塊（EVM）

Developed with Mistral, the AM/DM37x Evaluation Module (EVM) enables developers to immediately start evaluating AM37x or DM37x processors (DM3730, DM3725, AM3715, AM3703) and begin building solutions such as portable multimedia, portable data terminals, portable medical equipment, portable communications, home and building automation, navigation systems, test and measurement, smart displays and human machine interaction (HMI) industrial interfaces amongst many others.

AM/DM37x EVM includes

Hardware

DM3730 Processor Module

1GHz ARM Cortex-A8 Processor

800MHz DSP processor with IVA video accelerators

256MB MDDR/512MB NAND

TPS64102 Power Management Module

WL127 WLAN/Bluetooth Daughter Card

3.7" LCD Touchscreen

EVM Base Board

Ethernet, SD/MMC, UARTs, USB Host and OTG, Audio and Video Output, JTAG, Keypad, and expansion USB, Serial, and Power cables

Universal power supply with regional adapter

Stylus and USB SD Card Reader

Software

AM37x and DM37x Software Development kits provided via included 4GB SD Card

Documentation

AM/DM37x EVM Quick Start Guide

Linux SDK SD card content sheet

Software license agreement

Software and soft copy documents

AM/DM37x EVM Hardware User’s Guide (SD card)

AM37x and DM37x Software Developer’s Guide (SD card)

AM37x and DM37x Software Developer’s Kit (SD card)

Sourcery G++? evaluation tools from CodeSourcery

Ubuntu Linux host distribution

The AM/DM37x EVM is based on TI’s AM/DM3730 applications processor.

The Hynix memory is interfaced to the AM/DM3730 processor via Package-On-

Package technology. The Hynix PoP memory supports 2Gbit NAND flash and 2 Gbit Mobile DDR SDRAM. The DDR memory and NAND Flash are connected to SDRAM controller (SDRC) and General Purpose memory Controller (GPMC) interfaces of processor respectively.

It is also equipped with a 3.7” TFT LCD module. This LCD Module is interfaced to the Display SubSystem (DSS) interface of the processor.

Analog Video outputs of EVM support both Composite TV (CVBS) output and Svideo output on the main board. The CVBS or S-Video Outputs are available on respective connector by default.

AM/DM37x EVM supports multiple video input options through AM/DM3730’s camera port. Any one of the below interface shall be active at a given point of time.

1. S-Video Input, digitized through Video decoder (TVP5146PFP)

2. Composite Video Input through Video decoder (TVP5146PFP)

3. Component Video Input through Video decoder (TVP5146PFP)

4. Camera Interface – 26-Pin camera connector to support Micron Camera Module

5. Camera Interface – Provision for LI-3M02CM camera module

The EVM has a SD/MMC slot using SD/MMC1 interface on the main board. And the SD/MMC2 interface is routed to the expansion connector.

The EVM has a 10/100 Mbps Ethernet interface using an external MAC/PHY controller LAN 9220 which is interfaced to the AM/DM3730 via the GPMC interface.

The EVM supports three UART (UART 1, 2 and 3) interfaces via two serial ports on the main board.

High Speed USB OTG interface is supported on the EVM Main Board via an onboard external USB transceiver.

High Speed USB HOST (USB2) interface is supported on the EVM Main Board via an onboard external USB transceiver.

One Stereo Line IN and Stereo Headset OUT audio interface is supported through the audio codec on the TPS65950 device. The audio codec on the power module is controlled by internal registers that can be accessed through high-speed I2C interface.

The EVM includes 11 status LEDs, 2 user DIP switches and 16 push button switches.It supports the standard 14-pin JTAG and ETM debug interfaces. The EVM is designed to work with TI’s Code Composer Studio development, or standard GDB tool environments. For more details refer Getting Start Guide.

The EVM is powered by a +5V external power supply. The TPS65950 power management device provides the required CPU core voltages and IO voltages.

The EVM can also be powered using an external Lithium Ion/Polymer battery.(Battery not supplied with EVM). RTC is supported through a coin cell.

圖2。AM/DM37x EVM評估模塊功能方框圖

圖3。AM/DM37x EVM評估模塊外形圖（頂視圖）

AM/DM37x EVM評估模塊系統包括：

? EVM 主板：The EVM Main Board provides the peripheral interfaces and connectors for the system along with Processor board and Power Module. In the AM/DM37x EVM architecture, the Processor Module connector pin outs and functions are defined by the Main Board. The following sections describe about the various interfaces on the EVM main board.

? 處理器模塊：AM/DM3730 Processor Module consists of AM/DM3730 Processor with PoP memory Hynix (H8KDS0UN0MER-4EM) .

? 電源模塊：The Power Module has TPS65950 Power and Audio companion device, which is responsible for AM/DM3730 power management, clock and reset generation. This can support multiple power supply designs in the EVM architecture. Communication to the AM/DM3730 Processor is via the High Speed I2C interface for voltage scaling, configuration, and ON/OFF control.

圖4。AM/DM37x EVM主板電路圖（1）

圖5。AM/DM37x EVM主板電路圖（2）

圖6。AM/DM37x EVM主板電路圖（3）

圖7。AM/DM37x EVM主板電路圖（4）

圖8。AM/DM37x EVM主板電路圖（5）

圖9。AM/DM37x EVM主板電路圖（6）

圖10。AM/DM37x EVM主板電路圖（7）

圖11。AM/DM37x EVM主板電路圖（8）

圖12。AM/DM37x EVM主板電路圖（9）

圖13。AM/DM37x EVM主板電路圖（10）

圖14。AM/DM37x EVM主板電路圖（11）

圖15。AM/DM37x EVM主板電路圖（12）

圖16。AM/DM37x EVM主板電路圖（13）

圖17。AM/DM37x EVM主板電路圖（14）

圖18。AM/DM37x EVM主板電路圖（15）

圖19。AM/DM37x EVM主板電路圖（16）

圖20。AM/DM37x EVM主板電路圖（17）

圖21。AM/DM37x EVM主板電路圖（18）

圖22。AM/DM37x EVM主板電路圖（19）

圖23。AM/DM37x EVM處理器模塊電路圖（1）

圖24。AM/DM37x EVM處理器模塊電路圖（2）

圖25。AM/DM37x EVM處理器模塊電路圖（3）

圖26。AM/DM37x EVM處理器模塊電路圖（4）

圖27。AM/DM37x EVM電源模塊電路圖（1）

圖28。AM/DM37x EVM電源模塊電路圖（2）

圖29。AM/DM37x EVM電源模塊電路圖（3）