RMI 公司的Alchemy Au1200 是系统级(SoC)处理器,能开发出全特性的个人媒体播放器(PMP). Au1200采用定制的MIPS32内核,工作频率为333, 400和500MHz,32位架构,16KB指令+16KB数据缓存,具有媒体加速引擎(MAE),支持MPEG1, 2, 4和WMV9,分辨率可高达1024x768,工作温度从-40度到100度C,非常适合用在PMP,汽车电子和数字媒体适配器(DMA).本文介绍了Alchemy Au1200的主要性能,方框图以及DBAu1200开发板的主要特性,外形图和方框图.

RMI ALCHEMY AU1200 PERSONAL MEDIA PLAYER REFERENCE DESIGN



The RMI Alchemy Au1200 processor leverages a 5-year commitment to developing high-performance, low-power solutions to provide a purpose-built, versatile processor for Personal Media Player (PMP), Automotive, and Digital Media Adapter (DMA) applications. The Au1200 processor enables users to download media quickly and enjoy DVD-quality video efficiently delivered at full-frame rates, with low power, and with ample product features. The RMI Alchemy Au1200 processor gives system designers an easy-to-use, simple solution to create full-featured PMPs with greatly reduced design cycle times. System-on-a-Chip (SoC) architecture eliminates the need for additional components.

The processor is available in an extended temperature range option of -40℃ to 100℃ for all speeds.

Au1200基本特性:

Customized MIPS32 Core

333, 400, and 500MHz

32-bit architecture

16KB instruct + 16KB data caches

High-speed multiply-accumulate (MAC) and divide unit

1.2V core, 3.3V I/O

Media Acceleration Engine (MAE)

Support for MPEG1, 2, 4, and WMV9 scaled up to 1024x768

MPEG2 main profile/main level (720x480, 10Mbps, 30fps)

MPEG4 advanced simple profile/level 5 (720x480, 4Mbps, 30fps)

WMV9 main profile/medium level (720x480, 2.5Mbps, 30fps)

DivX certified portable

DDR SDRAM Controller

Supports 2.5 or 1.8V DDR1/DDR2 and mobile DDR memory with speeds up to DDR500

16/32-bit data, 14-bit address

Up to 512MB (four 1-Gbit devices)

1:1, 2:1, 3:1 system bus clock to memory clock options

Unified memory architecture with dedicated video subsystem

Static Bus Controller

16-bit data bus interface

IDE interface with support for PIO mode and multiword simple DMA data transfers

Support for both NOR and NAND Flash devices

— Boot from NAND or NOR Flash

— Supports 30 bits of addressable memory using 15 pins and address latch protocol

Compact Flash/PCMCIA

Support for external 10/100 Ethernet controller

AES Hardware Encrypt/Decrypt Engine

AES 128

ECB, CBC, CFB, OFB modes supported

100/50/25/12MHz clock option for power/performance considerations

LCD Controller

Up to 1024x768 resolution screens

32-bits per pixel aRGB color resolution support

Four prioritizable overlay windows

Alpha override and per-pixel alpha blending

Four-color hardware cursor

Configurable on-chip memory area for palette RAM, gamma correction, or 1KB frame buffer

Integrated Peripherals

Two Programmable Serial Controllers (PSCs) – each independently capable of being programmed for AC97, I2S, SPI, and SMBus (system management bus) serial protocols

Two Secure Digital/SDIO/MMC Controllers

USB 2.0 Host and Device Controller with HS, FS, and LS support (for both)

— Configurable Host, Device, OTG (On-the-Go) support

Two UARTs

GPIO (48)

Camera Interface Module

8-10 bit parallel data bus

Planar modes support CMOS/CCD sensors

CCIR 656 data input

CIM image data is autonomously planarized in RGB or YCbCr format, relieving the core from the actual work

A Raw Data Mode supports moving CIM input data unchanged to memory

Power Management Modes

Sleep

Hibernate

Idle0/Idle1

Other

Low power

Package: Pin count 372 Plastic BGA



图1.Au1200方框图

High-Performance, Low-Power Solution Optimized for PMP, Automotive, and DMA Applications

The RMI Alchemy Au1200 processor delivers maximum performance with minimum effort – full-function personal media on milliwatts of power.

No transcoding required

No need for DSP

No SDRAM bottlenecks

Unified memory architecture

Media Acceleration Engine (MAE)

Built-in decryption hardware for digital rights management

LCD controller design optimizes displays

The Au1200 processor features an LCD controller that gives developers full 32-bit RGB capabilities in each of four prioritized overlay windows that require no frame buffer modifications to reposition. The Au1200 also features gamma correction for matching video displays with graphics, a global background color that simplifies processing and produces an aesthetically pleasing display, and a 1KB palette RAM frame buffer that is ideal for displaying information in portable device idle modes.

Camera interface module supports today’s popular features

The Au1200 processor also features a Camera Interface Module (CIM) that provides an 8- or 10-bit data bus for input from CCD/CMOS sensors or other CCIR656 data. The CIM supports pixel clock rates up to 33MHz, and adds popular capabilities including image capture and analog TV display.

CIM image data is autonomously planarized in RGB or YCbCr format, relieving the core from additional work, and is routed to three separate FIFOs. Output is then moved to memory using DDMA.

Planarized data can take advantage of the scaling, filtering, and color space conversion capabilities of the MAE.

RMI Alchemy DBAu1200开发板

The RMI Alchemy DBAu1200 development board is an allinclusive hardware and software tool suite that enables product developers to quickly and easily design and test next-generation digital media devices. The DBAu1200 development board includes a complete set of features for the development and testing of operating system and application software for products based on the low-power, high-performance digital media capabilities of the RMI Alchemy Au1200 processor.

The DBAu1200 development board is a logical extension of the capabilities of the Au1200 processor. This System-on-a-Chip (SoC) provides on-chip decoding of virtually all digital media formats, including MPEG1, 2, and 4; DivX 3, 4, and 5; H.263; and WMV9 video at D1 resolution (720 x 480) on handheld media-rich devices, without the need for transcoding.

The development board is designed to optimize the strengths of the RMI Alchemy Au1200 processor, such as its unified memory architecture, descriptor-based DDMA engine, and broad device support.



图2.DBAu1200开发板外形图

Hardware

The RMI Alchemy DBAu1200 development board is delivered complete and is configured and ready to run all leading development software programs. The development board is designed around the Au1200 processor and also includes DDR2 and Flash memory devices, all other associated semiconductors, and connectivity support for all peripheral devices.

The development board also features programmable serial controllers and power supplies and is delivered with a 1.3-megapixel digital camera, and an EJTAG header supports monitoring and debugging and provides full-board reset.



图3.DBAu1200开发板方框图

Software and Documentation

The DBAu1200 development board helps designers become productive quickly with an included Quick Start CD that contains a Windows CE demo and media codecs, plus the Linux operating system kernel and Linux development tools.

The development board also includes Personal Media Player (PMP) and Digital Media Adapter (DMA) applications that can help to produce enhanced development cost savings. In addition to a Quick Start Guide, the CD also contains processor design files, application notes, the YAMON monitoring and debug assist software, and data sheets for each major board component.

DBAu1200开发板主要特性:

Processor

RMI Alchemy Au1200 processor – directly soldered on board, not socketed

VDDI = 1.2V (switchable from 0.925V-1.275V)

MIPS32-based core that provides a simple programming model and well-established toolchain

Hardware Media Acceleration Engine (MAE) that autonomously performs the most demanding parts of video decoding, and also provides scaling, filtering, and color space conversion for any display data

32-bit aRGB LCD controller

Camera Interface Module for glueless interfacing with CCD/CMOS sensors and analog TV devices

AES encryption/decryption allows hardware acceleration for content Digital Rights Management (DRM)

Memory

DRAM: Two ranks of 512Mbit DDR2-533 devices (256MB total)

NOR Flash: 2 x 256Mbit MirrorBit NOR Flash (64MB total), swap-boot between pairs

NAND Flash: 1 x 8 (128MB or 256MB total) device is restricted to CS[1]#, and is not bootable

Expansion

PCMCIA: Dual Hot-Swappable slots

DaughterCard Connector

Memory-mapped Registers

Onboard Peripherals

USB: Two USB ports for USB 2.0 Host and Device Controller that supports OTG

(On-The-Go) protocols:

— 1 Host + 1 Device, or

— 1 OTG + 1 Host, or

— 2 Hosts

— HS, FS, and LS support for both host and device

IDE: PIO Mode with Multiword DMA; standard IDE connector

Memory-mapped Ethernet MAC/PHY: SMSC LAN91C111

UARTS: Two UARTS:

— U0 is Rx_D/Tx_D only,

— U1 with full RS-232 handshake (from GPIO[14:9])

SD-Card: 1 connector on SD0 Port

Camera Interface Module: 1 2x16 stake-pin connector for included OmniVision OV9640FBG camera (1.3Mpixel)

LCD Interface: three output options:

— Generic Connector

— CRT DAC: Converts LCD signals to CRT signals output to VGA connector

— LVDS Transmitter output to backlight inverter connector

TV Interface: Focus Enhancement FS453 PC > TV video scan converter provides NTSC/PAL S-Video out; with adapter cables can support composite, component (720p), SCART

Programmable Serial Controllers

Two Multiplexed pairs:

— PSC1 Pair (Only one of these two may be operational at any given time):

AC97: SigmaTel STAC9752T with stereo mini-plug jacks for 1 line-in, 1 headphone out, and 1 microphone – I2S: Wolfson WM8731 with stereo mini-plug jacks for 1 line-in, 1 headphone out, and 1 microphone

— PSC0 Pair (Only one of these two may be operational at any given time):

– SMBus: Temp/Voltage Monitor and Serial EPROM

– SPI: Temp Monitor and RMI SPI-Flash

EJTAG

2 x 7 pin connector to Au1200 processor; able to reset the entire board from EJTAG

Power

Software power-off capable

System power-on from Au1200 WAKE# signal

Coin cell battery on VDDZ (Real-Time Clock); populated, and spare battery is included

PC Power Connector (for attached PC devices such as IDE drive)

VDDI switch selectable (0.925V – 1.275V); default is 1.2V

Power-up/power-down sequencing circuit (VDDX, VDDY)

Four-voltage supervisor monitor/reset circuit

Board Software Reset

Single +12V DC external power supply

Onboard high-efficiency switch-made regulators to create these voltages: VDDI, +1.8V, +2.5V, +3.3V, and +5V

Kit Content

RMI Alchemy DBAu1200 development board

Power supply and cord

OmniVision Model OV9640FBG 1.3 MP camera

Serial cable for YAMON

Replacement battery for RTC

Documentation/Demo CD

— Quick Start Guide, Design files for DBAu1200 development board, data sheets for major silicon components, application notes, etc.

— YAMON monitor/debugger software

— Windows CE demo – boot loader and nk.bin image

— Linux – kernel and tools, device drivers, RMI media player software

— Personal Media Player and Digital Media Adapter applications