alvis product introduction - digital media processor platform

AlvisProduct

Introduction

Open Telecom for Open Minds

1222-1-HCA-1018-2-1.0

Copyright ©Odin TeleSystems Inc.

2008

Alvis Product Introduction

- Digital Media Processor Platform

Odin TeleSystems is a Texas Instruments’ Third Party Member.DaVinci is a trademark of Texas Instruments.

Certain portions of this presentation are provided by Texas Instruments.

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

Glossary -A bunch of letter combinations?

• OTX – Odin Telecom FrameworkX• DSP – Digital Signal Processor• DMP – Digital Media Processor

(ARM + DSP) • DMM – Digital Media Module• Li – Line Interface (e.g. T1/E1)• NIC – Network Interface Card (e.g.

Thor-8-PCI-Plus)• CE – Codec Engine

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

Alvis -What is it?

• OTX Daughter board with up to 4 DaVinci (Texas Instruments) Digital Media Processors (DMP)

• Each processor has two cores: ARM9 and C64x+• 4752 DSP MIPS and 400 MHz ARM processing

power• Gb Ethernet port (internal Ethernet switch)• MontaVista Linux Operating System (Windows CE

option [future])• TDM interface to host NIC card (e.g. Thor-8-PCI-

Plus-2.0)• 3 versions available (1, 2 and 4 DMPs)

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

Alvis -What can it be used for?

Suitable for virtually any processor-intensive voice or video application, for example:

• RTP to E1/T1streaming and transcoding• VoIP Gateway (SIP and E1/T1 solutions)• Soft-switch• Data compression and decompression of a

vast amount of timeslots• 3G Codec transcoding applications• Traditional TDM telephony algorithms like

DTMF, MF, VAD, Echo Cancellation, etc.

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

Alvis-ASM -Benefits?

• MIPS - One of the most powerful processor platform per occupied space in the industry.

• Multi-thread - Dual core device provides for multi-threading applications in a very a small footprint.

• Linux - Open development platform using industry standard operating systems and tools (Linux and U-boot) provides for rapid project development, ease of use and expandability.

• Redundancy – Internal Ethernet switch can be configured for port mirroring between processors

• OTX – Standard OTX API functions can be used to interface to the Alvis-ASM board as well to develop internal embedded applications to be executed on the Alvis processors (DMPs).

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

Alvis-ASM -What SW package are included?

• MontaVista Linux Board Support Package from Texas Instruments (DVEVM)

• OTX HW SDK (host application SDK)• Selected Codecs:

– G.711 Codec (a-law/u-law)

– G.723.1 decoder

– G.729AB decoder

• OTX Standard SPMs (tone generators and detectors, HDLC encoder/decoder).

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

Alvis-ASM -What SW package can be added?

• Video/ImagingDecoders: MPEG-4 SP, H.263 p0, H.264 BP,

H.264 MP, MPEG-2 MP, WMV9 MP/AP, VC1, JPEG

Encoders: MPEG-4 SP, H.264 BP, JPEG

• Voice/SpeechWireline Voice Codecs: G.722, G.726Wireless Voice Codecs: GSM-AMR, GSM-FR,

GSM-EFR, EVRC, WB-AMR - G/722.2

• AudioDecoders: MP3, WMA9, AAC LC, AAC HE, AC3Encoders: WMA8, AAC LC, AAC HE

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

Alvis-ASM -what does it look like?

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

TDM Data Path -How do the highways connect?

Alvis-2-ASM

EthernetL2 Switch10/100/1000

Ethernet Phy

TDM

FPGA

OTX NIC Base Card

TDM

TDM

ARM

DSP

Digital Media Processor

ARM

DSP


Ethernet

Ethernet

Ethernet

Ethernet

TSS

H.100 bus

TDMTransceivers TDMTDM

Ethernet

ASM interface

Ethernet

OtxDrvHost

Driver(PC)

PC

I Bu

s

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

TDM Data Path -More details, please…

Alvis-2-ASMTSS TDM Highway Numbers

1x8M

FPGA

Thor-8-PCI-Plus NIC Card

1x8M

TSS[8-11]4x8M

ARM

DSP


#1

TSS

H.100 busTSS[0]1x8M

Quad T1E1#0

TSS[16-47]32x8M

4 E1/T1 spans

ASM interface

Quad T1E1#1 TSS[1]

1x8M

4 E1/T1 spans

TSS[8]

TSS[9]Digital Media Processor

#0

ARM

DSP

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

Processor Subsystem

256 MbyteDDR2

Memory

128MBNAND Flash

ARM9core

DSPC64x+core

TMS320DM6443Digital Media Processor

32-bit

8-bit

Processor Subsystem -What resources does each processor have?

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

Packet Switching Subsystem -How are packets routed?

Alvis-2-ASM Packet Switching Subsystem

EthernetL2 Switch

10/100/1000 Ethernet PHY

FPGA(expansion)

ARM

DSP


ARM

DSP


LAN/WAN/Internet

OtxDrvHost

Driver(PC)

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

Debugging Subsystem -UART ports?

DMP0Serial Port Connector

Alvis-ASM board

J3

3.87

5"

4.5"

2x70

pin

boa

rd s

tack

con

nect

or

2x70

pin

boa

rd s

tack

con

nect

or




USB Connector

J4

J5

J6

J7

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

Software Subsystem -What runs where?

• U-Boot (customized for Alvis)• Flash environment variables• IP and MAC address settings• NFS or Flash boot• Linux kernel• JFFS2• USB

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

ARM vs DSP partitioning

ARM acts as a master processor:

• User Controls• File System• Peripheral

drivers• TCP/IP stack• Can also run

lower-MIPS algorithms

DSP abstracted as “black box”:

• Runs processing-intensive algorithms such as voice codecs with hard real-time deadlines

• Defined ways of interfacing with the black box, optimized for multi-media algorithms

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

Software Subsystem -Software Stack

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

Boot Process (U-boot)• Boot selection from OTX Host Application (UART/Flash)• ARM executes U-Boot (typically from Flash)

– UBoot configures DMP peripherals– Displays prompt on UART– Allows user to change / save parameter settings

• U-Boot interprets settings and loads Linux into DDR2• Linux consists of 2 (fairly independent) components:

• Kernel• File system

• Several options how these two components can be provided (see table below):

• U-Boot starts Linux• Outputs can be observed on UART• Can log-in to ARM Linux from host PC via

• UART• Telnet

• Linux can be configured to auto-run programs afterstart-up (e.g. an OTX DMP application)

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

Alvis Target Development

• ARM project files are edited and compiled on the host PC– Cross-compiler/linker generate ARM executable– Run either on native or virtual Linux PC (VMWare)

• ARM executable is placed into a host directory (e.g. ~/targetdir), which is NFS-mounted into ARM Linux (e.g. as /mnt/host)

• ARM Linux can execute the program even though it is located on the remote network drive

• For debugging, the target program is invoked on the ARM indirectly by a debug server, which IDEs like ddd or DevRocket can connect to via Ethernet

/mnt/host> gdbserver <host IP address>:1000 hello.out

• IDEs can set breakpoints / watch variables / step / run the program via TCP/IP commands to the gdbserver program

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

Software Subsystem -Accessing peripheral drivers

• User space programs can not access any peripheral directly

• Peripheral access is exclusively done in drivers (from kernel space)Serial – UARTStorage – NAND FlashNetwork – EthernetUSB – Mass storageHost - OtxDaVinci driver

• Drivers can be accessed from user programs through logical “files” in the /dev directory, e.g./dev/mtd2 is the gate to the JFFS2

driver/dev/mtd0 is the gate to the u-

boot environment variables

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

Software Subsystem -Accessing multi-media codecs

• Low-MIPS (e.g. audio) multi-media algorithms can be configured to run on the ARM core itself.

• Similar to peripherals, they can’t be called directly, but only through the Codec Engine (CE) API

• Every CE algorithm provides four APIs:

– create– control– process– delete

• There are eight algorithm classes:

– Video encode / decode– Imaging encode / decode– Speech encode / decode– Audio encode / decode

with corresponding API prefixes:

e.g. SPHDEC_ or AUDENC_

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

RTP Demo

• Demonstrates how to receive RTP packets via Ethernet

• Demonstrates how to decode G.729 encoded voice data stream

• Demonstrates how to encode the data stream to G.711 (a-law/u-law)

• Demonstrates how to route the a-law/u-law data to a timeslot on one of the E1 spans of Thor-8-PCI-Plus

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

RTP demo -RTP Packet to TDM transcoding application

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

Questions & Answers

AlvisProduct

Introduction


1222-1-HCA-1018-2-1.0


2008

Alvis-ASM Product Overview

The End

alvis product introduction - digital media processor platform

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